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Chore: Add headers to all the files (#54)

Browse Source 
## Description
- Add headers to all the CSV files

## Script used
```py
import csv
import os

# Set the path of the folder containing the CSV files
folder_path = "./LeetCode-Questions-CompanyWise"
headers = [
    "ID",
    "Title",
    "Acceptance",
    "Difficulty",
    "Frequency",
    "Leetcode Question Link",
]

# Loop through all the CSV files in the folder
for file_name in os.listdir(folder_path):
    if file_name.endswith(".csv"):
        # Read the CSV file into a list of rows
        file_path = os.path.join(folder_path, file_name)
        with open(file_path, "r") as f:
            reader = csv.reader(f)
            rows = list(reader)

        has_headers = False
        if len(rows) > 0 and rows[0] == headers:
            has_headers = True

        if not has_headers:
            rows.insert(0, headers)

            # Write the list of rows back to the CSV file
            with open(file_path, "w", newline="") as f:
                writer = csv.writer(f)
                writer.writerows(rows)

```
This commit is contained in:
Krishna Kumar Dey
2023-04-01 11:07:49 +05:30
committed by GitHub
parent 0aeadbd612
commit fb5f78b55e
534 changed files with 20291 additions and 19757 deletions
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667
bloomberg_2year.csv
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@@ -1,333 +1,334 @@
1396,Design Underground System,64.7%,Medium,2.1135252465771397, https://leetcode.com/problems/design-underground-system
430,Flatten a Multilevel Doubly Linked List,55.1%,Medium,2.069920145220796, https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
394,Decode String,50.0%,Medium,1.922952973608821, https://leetcode.com/problems/decode-string
1169,Invalid Transactions,31.2%,Medium,1.775985801996846, https://leetcode.com/problems/invalid-transactions
146,LRU Cache,33.2%,Medium,1.7600666299446097, https://leetcode.com/problems/lru-cache
723,Candy Crush,69.2%,Medium,1.6530191678816324, https://leetcode.com/problems/candy-crush
200,Number of Islands,46.8%,Medium,1.615390367064938, https://leetcode.com/problems/number-of-islands
138,Copy List with Random Pointer,36.4%,Medium,1.6042707455750564, https://leetcode.com/problems/copy-list-with-random-pointer
1274,Number of Ships in a Rectangle,66.3%,Hard,1.4573035739630815, https://leetcode.com/problems/number-of-ships-in-a-rectangle
253,Meeting Rooms II,45.7%,Medium,1.3103364023511066, https://leetcode.com/problems/meeting-rooms-ii
1029,Two City Scheduling,56.1%,Easy,1.1960323376867015, https://leetcode.com/problems/two-city-scheduling
1209,Remove All Adjacent Duplicates in String II,56.9%,Medium,1.1910135181291903, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
582,Kill Process,60.8%,Medium,1.1380445719557106, https://leetcode.com/problems/kill-process
451,Sort Characters By Frequency,63.0%,Medium,0.9935802696598246, https://leetcode.com/problems/sort-characters-by-frequency
380,Insert Delete GetRandom O(1),47.5%,Medium,0.9628799998106988, https://leetcode.com/problems/insert-delete-getrandom-o1
117,Populating Next Right Pointers in Each Node II,39.1%,Medium,0.9038177676556401, https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
445,Add Two Numbers II,54.5%,Medium,0.8983751201781012, https://leetcode.com/problems/add-two-numbers-ii
42,Trapping Rain Water,48.9%,Hard,0.8947784585060016, https://leetcode.com/problems/trapping-rain-water
98,Validate Binary Search Tree,27.8%,Medium,0.868197514095562, https://leetcode.com/problems/validate-binary-search-tree
2,Add Two Numbers,33.9%,Medium,0.8456334552268243, https://leetcode.com/problems/add-two-numbers
387,First Unique Character in a String,53.4%,Easy,0.8077227245408917, https://leetcode.com/problems/first-unique-character-in-a-string
155,Min Stack,44.5%,Easy,0.7784701890607135, https://leetcode.com/problems/min-stack
611,Valid Triangle Number,48.4%,Medium,0.6315030174487386, https://leetcode.com/problems/valid-triangle-number
1,Two Sum,45.6%,Easy,0.5958586063072399, https://leetcode.com/problems/two-sum
116,Populating Next Right Pointers in Each Node,45.2%,Medium,0.5943515521873914, https://leetcode.com/problems/populating-next-right-pointers-in-each-node
56,Merge Intervals,39.3%,Medium,0.5781542132082721, https://leetcode.com/problems/merge-intervals
242,Valid Anagram,56.9%,Easy,0.5645542892855558, https://leetcode.com/problems/valid-anagram
33,Search in Rotated Sorted Array,34.5%,Medium,0.5189131805357498, https://leetcode.com/problems/search-in-rotated-sorted-array
987,Vertical Order Traversal of a Binary Tree,36.6%,Medium,0.5046220573152461, https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
460,LFU Cache,34.2%,Hard,0.49273850527484675, https://leetcode.com/problems/lfu-cache
390,Elimination Game,44.5%,Medium,0.487438691067837, https://leetcode.com/problems/elimination-game
20,Valid Parentheses,39.0%,Easy,0.4867693607438125, https://leetcode.com/problems/valid-parentheses
3,Longest Substring Without Repeating Characters,30.4%,Medium,0.48411466774638867, https://leetcode.com/problems/longest-substring-without-repeating-characters
139,Word Break,40.1%,Medium,0.4760457233294034, https://leetcode.com/problems/word-break
399,Evaluate Division,51.6%,Medium,0.46497633645538805, https://leetcode.com/problems/evaluate-division
314,Binary Tree Vertical Order Traversal,45.3%,Medium,0.4380937008921841, https://leetcode.com/problems/binary-tree-vertical-order-traversal
1472,Design Browser History,64.6%,Medium,0.41985384556026395, https://leetcode.com/problems/design-browser-history
488,Zuma Game,39.9%,Hard,0.3999856423435388, https://leetcode.com/problems/zuma-game
269,Alien Dictionary,33.3%,Hard,0.379287301768956, https://leetcode.com/problems/alien-dictionary
114,Flatten Binary Tree to Linked List,49.3%,Medium,0.3666595336863693, https://leetcode.com/problems/flatten-binary-tree-to-linked-list
692,Top K Frequent Words,51.8%,Medium,0.35372832097636575, https://leetcode.com/problems/top-k-frequent-words
12,Integer to Roman,55.1%,Medium,0.35057238514000694, https://leetcode.com/problems/integer-to-roman
554,Brick Wall,50.0%,Medium,0.34539039007242767, https://leetcode.com/problems/brick-wall
301,Remove Invalid Parentheses,43.3%,Hard,0.3106405420076888, https://leetcode.com/problems/remove-invalid-parentheses
797,All Paths From Source to Target,77.9%,Medium,0.3046654057632776, https://leetcode.com/problems/all-paths-from-source-to-target
283,Move Zeroes,57.8%,Easy,0.27654976037504925, https://leetcode.com/problems/move-zeroes
105,Construct Binary Tree from Preorder and Inorder Traversal,48.8%,Medium,0.2757228816736699, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
422,Valid Word Square,37.7%,Easy,0.2578291093020998, https://leetcode.com/problems/valid-word-square
23,Merge k Sorted Lists,40.2%,Hard,0.2572061238898046, https://leetcode.com/problems/merge-k-sorted-lists
662,Maximum Width of Binary Tree,41.0%,Medium,0.23997959968856164, https://leetcode.com/problems/maximum-width-of-binary-tree
15,3Sum,26.8%,Medium,0.23615702163919466, https://leetcode.com/problems/3sum
79,Word Search,35.6%,Medium,0.23137350418457728, https://leetcode.com/problems/word-search
10,Regular Expression Matching,26.8%,Hard,0.23083119919105394, https://leetcode.com/problems/regular-expression-matching
21,Merge Two Sorted Lists,53.5%,Easy,0.22227395167049366, https://leetcode.com/problems/merge-two-sorted-lists
1223,Dice Roll Simulation,45.6%,Medium,0.2166710368085923, https://leetcode.com/problems/dice-roll-simulation
5,Longest Palindromic Substring,29.5%,Medium,0.20554421123878217, https://leetcode.com/problems/longest-palindromic-substring
463,Island Perimeter,65.7%,Easy,0.20102047685235075, https://leetcode.com/problems/island-perimeter
214,Shortest Palindrome,29.8%,Hard,0.19671029424605424, https://leetcode.com/problems/shortest-palindrome
173,Binary Search Tree Iterator,56.6%,Medium,0.1932027494363769, https://leetcode.com/problems/binary-search-tree-iterator
1047,Remove All Adjacent Duplicates In String,68.6%,Easy,0.19088376654809422, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
658,Find K Closest Elements,40.9%,Medium,0.18663941293482042, https://leetcode.com/problems/find-k-closest-elements
199,Binary Tree Right Side View,54.1%,Medium,0.18661020557359304, https://leetcode.com/problems/binary-tree-right-side-view
140,Word Break II,32.6%,Hard,0.17885934906548379, https://leetcode.com/problems/word-break-ii
1244,Design A Leaderboard,60.7%,Medium,0.17763094743610072, https://leetcode.com/problems/design-a-leaderboard
328,Odd Even Linked List,55.7%,Medium,0.17548836529558792, https://leetcode.com/problems/odd-even-linked-list
384,Shuffle an Array,52.8%,Medium,0.17247686769050424, https://leetcode.com/problems/shuffle-an-array
971,Flip Binary Tree To Match Preorder Traversal,45.7%,Medium,0.1670540846631662, https://leetcode.com/problems/flip-binary-tree-to-match-preorder-traversal
53,Maximum Subarray,46.5%,Easy,0.16188416901715558, https://leetcode.com/problems/maximum-subarray
443,String Compression,41.3%,Easy,0.15834355808729428, https://leetcode.com/problems/string-compression
322,Coin Change,35.5%,Medium,0.1575195768933631, https://leetcode.com/problems/coin-change
332,Reconstruct Itinerary,36.7%,Medium,0.15671959735502852, https://leetcode.com/problems/reconstruct-itinerary
72,Edit Distance,44.8%,Hard,0.14935692774322157, https://leetcode.com/problems/edit-distance
41,First Missing Positive,32.0%,Hard,0.14910731703527175, https://leetcode.com/problems/first-missing-positive
273,Integer to English Words,27.1%,Hard,0.13879705494759292, https://leetcode.com/problems/integer-to-english-words
128,Longest Consecutive Sequence,45.1%,Hard,0.13583040733187832, https://leetcode.com/problems/longest-consecutive-sequence
49,Group Anagrams,56.9%,Medium,0.1285763065181971, https://leetcode.com/problems/group-anagrams
118,Pascal's Triangle,52.5%,Easy,0.12852395589356347, https://leetcode.com/problems/pascals-triangle
121,Best Time to Buy and Sell Stock,50.5%,Easy,0.1275803229646801, https://leetcode.com/problems/best-time-to-buy-and-sell-stock
694,Number of Distinct Islands,56.0%,Medium,0.12516314295400602, https://leetcode.com/problems/number-of-distinct-islands
92,Reverse Linked List II,38.8%,Medium,0.12080664535613118, https://leetcode.com/problems/reverse-linked-list-ii
88,Merge Sorted Array,39.4%,Easy,0.11989115268466984, https://leetcode.com/problems/merge-sorted-array
239,Sliding Window Maximum,43.0%,Hard,0.11945579213218108, https://leetcode.com/problems/sliding-window-maximum
739,Daily Temperatures,63.3%,Medium,0.11646575243222568, https://leetcode.com/problems/daily-temperatures
127,Word Ladder,29.6%,Medium,0.11461293205885352, https://leetcode.com/problems/word-ladder
229,Majority Element II,35.6%,Medium,0.11355198202632807, https://leetcode.com/problems/majority-element-ii
120,Triangle,44.2%,Medium,0.11325730177515365, https://leetcode.com/problems/triangle
1188,Design Bounded Blocking Queue,70.5%,Medium,0.11030454201470608, https://leetcode.com/problems/design-bounded-blocking-queue
695,Max Area of Island,62.7%,Medium,0.10876995385464024, https://leetcode.com/problems/max-area-of-island
924,Minimize Malware Spread,42.0%,Hard,0.10821358464023274, https://leetcode.com/problems/minimize-malware-spread
889,Construct Binary Tree from Preorder and Postorder Traversal,66.2%,Medium,0.10711776476069794, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
311,Sparse Matrix Multiplication,61.9%,Medium,0.10648348040245009, https://leetcode.com/problems/sparse-matrix-multiplication
759,Employee Free Time,66.3%,Hard,0.10623186692973738, https://leetcode.com/problems/employee-free-time
78,Subsets,62.0%,Medium,0.10594222506883655, https://leetcode.com/problems/subsets
346,Moving Average from Data Stream,70.9%,Easy,0.10562785959739482, https://leetcode.com/problems/moving-average-from-data-stream
102,Binary Tree Level Order Traversal,54.6%,Medium,0.10461287933893608, https://leetcode.com/problems/binary-tree-level-order-traversal
1060,Missing Element in Sorted Array,54.5%,Medium,0.1042610103244094, https://leetcode.com/problems/missing-element-in-sorted-array
69,Sqrt(x),33.9%,Easy,0.09855995053811686, https://leetcode.com/problems/sqrtx
90,Subsets II,47.1%,Medium,0.09830555874512009, https://leetcode.com/problems/subsets-ii
84,Largest Rectangle in Histogram,35.2%,Hard,0.09762873497741681, https://leetcode.com/problems/largest-rectangle-in-histogram
529,Minesweeper,59.1%,Medium,0.09695424100489167, https://leetcode.com/problems/minesweeper
716,Max Stack,42.6%,Easy,0.09362342046209744, https://leetcode.com/problems/max-stack
836,Rectangle Overlap,48.6%,Easy,0.09358079943969791, https://leetcode.com/problems/rectangle-overlap
4,Median of Two Sorted Arrays,29.6%,Hard,0.09321199094445486, https://leetcode.com/problems/median-of-two-sorted-arrays
727,Minimum Window Subsequence,41.8%,Hard,0.09294611250944432, https://leetcode.com/problems/minimum-window-subsequence
510,Inorder Successor in BST II,58.0%,Medium,0.09244453252200126, https://leetcode.com/problems/inorder-successor-in-bst-ii
535,Encode and Decode TinyURL,79.9%,Medium,0.09208956510428265, https://leetcode.com/problems/encode-and-decode-tinyurl
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,0.0913825929084002, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
652,Find Duplicate Subtrees,50.2%,Medium,0.08907963005368878, https://leetcode.com/problems/find-duplicate-subtrees
7,Reverse Integer,25.8%,Easy,0.08735674450872549, https://leetcode.com/problems/reverse-integer
109,Convert Sorted List to Binary Search Tree,47.7%,Medium,0.08701137698962977, https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
221,Maximal Square,37.7%,Medium,0.08564432277809672, https://leetcode.com/problems/maximal-square
991,Broken Calculator,45.6%,Medium,0.08515780834030685, https://leetcode.com/problems/broken-calculator
22,Generate Parentheses,62.7%,Medium,0.08480542001364956, https://leetcode.com/problems/generate-parentheses
857,Minimum Cost to Hire K Workers,49.6%,Hard,0.08320805808821628, https://leetcode.com/problems/minimum-cost-to-hire-k-workers
46,Permutations,63.5%,Medium,0.08209632149618187, https://leetcode.com/problems/permutations
813,Largest Sum of Averages,49.9%,Medium,0.08201315166083516, https://leetcode.com/problems/largest-sum-of-averages
737,Sentence Similarity II,45.8%,Medium,0.08167803101426718, https://leetcode.com/problems/sentence-similarity-ii
496,Next Greater Element I,63.8%,Easy,0.07978711661783192, https://leetcode.com/problems/next-greater-element-i
250,Count Univalue Subtrees,52.0%,Medium,0.07975881838845024, https://leetcode.com/problems/count-univalue-subtrees
295,Find Median from Data Stream,44.3%,Hard,0.07821574644502474, https://leetcode.com/problems/find-median-from-data-stream
54,Spiral Matrix,34.1%,Medium,0.07792846120043545, https://leetcode.com/problems/spiral-matrix
1297,Maximum Number of Occurrences of a Substring,47.3%,Medium,0.07770898432731625, https://leetcode.com/problems/maximum-number-of-occurrences-of-a-substring
1347,Minimum Number of Steps to Make Two Strings Anagram,74.7%,Medium,0.07742472477971579, https://leetcode.com/problems/minimum-number-of-steps-to-make-two-strings-anagram
518,Coin Change 2,50.2%,Medium,0.07583984694698977, https://leetcode.com/problems/coin-change-2
8,String to Integer (atoi),15.4%,Medium,0.07412832776627384, https://leetcode.com/problems/string-to-integer-atoi
76,Minimum Window Substring,34.6%,Hard,0.07378420845373558, https://leetcode.com/problems/minimum-window-substring
503,Next Greater Element II,56.5%,Medium,0.07339377143296942, https://leetcode.com/problems/next-greater-element-ii
9,Palindrome Number,48.4%,Easy,0.07330899176233006, https://leetcode.com/problems/palindrome-number
209,Minimum Size Subarray Sum,38.2%,Medium,0.07329286546547308, https://leetcode.com/problems/minimum-size-subarray-sum
271,Encode and Decode Strings,31.5%,Medium,0.07197349962508924, https://leetcode.com/problems/encode-and-decode-strings
470,Implement Rand10() Using Rand7(),46.3%,Medium,0.07020425867324853, https://leetcode.com/problems/implement-rand10-using-rand7
432,All O`one Data Structure,32.4%,Hard,0.06887402901251127, https://leetcode.com/problems/all-oone-data-structure
504,Base 7,46.2%,Easy,0.06759329113252818, https://leetcode.com/problems/base-7
560,Subarray Sum Equals K,43.9%,Medium,0.06636621624059272, https://leetcode.com/problems/subarray-sum-equals-k
1145,Binary Tree Coloring Game,51.2%,Medium,0.06592172080482424, https://leetcode.com/problems/binary-tree-coloring-game
1105,Filling Bookcase Shelves,58.1%,Medium,0.06464285626208545, https://leetcode.com/problems/filling-bookcase-shelves
628,Maximum Product of Three Numbers,47.1%,Easy,0.06453852113757116, https://leetcode.com/problems/maximum-product-of-three-numbers
565,Array Nesting,55.5%,Medium,0.06351340572232586, https://leetcode.com/problems/array-nesting
397,Integer Replacement,32.9%,Medium,0.06331227941432688, https://leetcode.com/problems/integer-replacement
413,Arithmetic Slices,57.9%,Medium,0.06286986221654821, https://leetcode.com/problems/arithmetic-slices
353,Design Snake Game,34.2%,Medium,0.06053284922884233, https://leetcode.com/problems/design-snake-game
153,Find Minimum in Rotated Sorted Array,45.1%,Medium,0.05846413569782837, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
160,Intersection of Two Linked Lists,40.6%,Easy,0.05844735064567987, https://leetcode.com/problems/intersection-of-two-linked-lists
417,Pacific Atlantic Water Flow,41.1%,Medium,0.057523844138186606, https://leetcode.com/problems/pacific-atlantic-water-flow
362,Design Hit Counter,63.7%,Medium,0.05622967649867821, https://leetcode.com/problems/design-hit-counter
1249,Minimum Remove to Make Valid Parentheses,62.5%,Medium,0.05613145611169511, https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
230,Kth Smallest Element in a BST,60.2%,Medium,0.055629976214953934, https://leetcode.com/problems/kth-smallest-element-in-a-bst
30,Substring with Concatenation of All Words,25.4%,Hard,0.05509349054082484, https://leetcode.com/problems/substring-with-concatenation-of-all-words
752,Open the Lock,51.8%,Medium,0.05449289949671372, https://leetcode.com/problems/open-the-lock
1054,Distant Barcodes,43.2%,Medium,0.054435206555017046, https://leetcode.com/problems/distant-barcodes
64,Minimum Path Sum,54.5%,Medium,0.05384075367843773, https://leetcode.com/problems/minimum-path-sum
44,Wildcard Matching,24.7%,Hard,0.053722215229247965, https://leetcode.com/problems/wildcard-matching
426,Convert Binary Search Tree to Sorted Doubly Linked List,59.1%,Medium,0.05368014946362379, https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
63,Unique Paths II,34.6%,Medium,0.05324937607387791, https://leetcode.com/problems/unique-paths-ii
31,Next Permutation,32.6%,Medium,0.05265913800819017, https://leetcode.com/problems/next-permutation
85,Maximal Rectangle,37.7%,Hard,0.05229949940284891, https://leetcode.com/problems/maximal-rectangle
286,Walls and Gates,54.5%,Medium,0.05155780966485001, https://leetcode.com/problems/walls-and-gates
708,Insert into a Sorted Circular Linked List,31.6%,Medium,0.05142521180743711, https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
1312,Minimum Insertion Steps to Make a String Palindrome,58.1%,Hard,0.050261834780888255, https://leetcode.com/problems/minimum-insertion-steps-to-make-a-string-palindrome
285,Inorder Successor in BST,40.4%,Medium,0.049569618859417214, https://leetcode.com/problems/inorder-successor-in-bst
203,Remove Linked List Elements,38.6%,Easy,0.04798700179553833, https://leetcode.com/problems/remove-linked-list-elements
125,Valid Palindrome,36.7%,Easy,0.047702249651065814, https://leetcode.com/problems/valid-palindrome
336,Palindrome Pairs,33.7%,Hard,0.04690191367275952, https://leetcode.com/problems/palindrome-pairs
556,Next Greater Element III,31.7%,Medium,0.04679216150675895, https://leetcode.com/problems/next-greater-element-iii
543,Diameter of Binary Tree,48.4%,Easy,0.04676784186766119, https://leetcode.com/problems/diameter-of-binary-tree
978,Longest Turbulent Subarray,46.6%,Medium,0.046737477851689815, https://leetcode.com/problems/longest-turbulent-subarray
206,Reverse Linked List,62.5%,Easy,0.046346967254127305, https://leetcode.com/problems/reverse-linked-list
97,Interleaving String,31.5%,Hard,0.04548535439411653, https://leetcode.com/problems/interleaving-string
784,Letter Case Permutation,64.6%,Medium,0.045030118720867006, https://leetcode.com/problems/letter-case-permutation
136,Single Number,65.5%,Easy,0.04495454584592534, https://leetcode.com/problems/single-number
341,Flatten Nested List Iterator,52.9%,Medium,0.04440788848944038, https://leetcode.com/problems/flatten-nested-list-iterator
642,Design Search Autocomplete System,44.7%,Hard,0.04334372921647208, https://leetcode.com/problems/design-search-autocomplete-system
895,Maximum Frequency Stack,60.6%,Hard,0.04329680575332419, https://leetcode.com/problems/maximum-frequency-stack
435,Non-overlapping Intervals,42.9%,Medium,0.04325518123147988, https://leetcode.com/problems/non-overlapping-intervals
821,Shortest Distance to a Character,66.9%,Easy,0.043110123653728516, https://leetcode.com/problems/shortest-distance-to-a-character
1155,Number of Dice Rolls With Target Sum,49.0%,Medium,0.04204262329555109, https://leetcode.com/problems/number-of-dice-rolls-with-target-sum
721,Accounts Merge,48.8%,Medium,0.04200337458562934, https://leetcode.com/problems/accounts-merge
787,Cheapest Flights Within K Stops,39.3%,Medium,0.04186657939278993, https://leetcode.com/problems/cheapest-flights-within-k-stops
532,K-diff Pairs in an Array,31.6%,Easy,0.041672696400568025, https://leetcode.com/problems/k-diff-pairs-in-an-array
572,Subtree of Another Tree,44.1%,Easy,0.041179261223646485, https://leetcode.com/problems/subtree-of-another-tree
101,Symmetric Tree,46.8%,Easy,0.04094139037736073, https://leetcode.com/problems/symmetric-tree
292,Nim Game,54.9%,Easy,0.03996979643236185, https://leetcode.com/problems/nim-game
162,Find Peak Element,43.3%,Medium,0.039043060072524054, https://leetcode.com/problems/find-peak-element
993,Cousins in Binary Tree,52.0%,Easy,0.03876454345024432, https://leetcode.com/problems/cousins-in-binary-tree
24,Swap Nodes in Pairs,50.4%,Medium,0.03826607060639552, https://leetcode.com/problems/swap-nodes-in-pairs
47,Permutations II,46.4%,Medium,0.038145268259690404, https://leetcode.com/problems/permutations-ii
270,Closest Binary Search Tree Value,48.5%,Easy,0.03812405784173832, https://leetcode.com/problems/closest-binary-search-tree-value
402,Remove K Digits,28.4%,Medium,0.03755134565213245, https://leetcode.com/problems/remove-k-digits
646,Maximum Length of Pair Chain,51.9%,Medium,0.036870535808327706, https://leetcode.com/problems/maximum-length-of-pair-chain
91,Decode Ways,24.7%,Medium,0.03673102791879485, https://leetcode.com/problems/decode-ways
673,Number of Longest Increasing Subsequence,35.7%,Medium,0.036467121912812143, https://leetcode.com/problems/number-of-longest-increasing-subsequence
71,Simplify Path,32.6%,Medium,0.03622126343431837, https://leetcode.com/problems/simplify-path
650,2 Keys Keyboard,49.2%,Medium,0.035910501305770864, https://leetcode.com/problems/2-keys-keyboard
226,Invert Binary Tree,65.0%,Easy,0.03393837323839263, https://leetcode.com/problems/invert-binary-tree
274,H-Index,36.1%,Medium,0.03364488914272426, https://leetcode.com/problems/h-index
567,Permutation in String,44.4%,Medium,0.033324075731591886, https://leetcode.com/problems/permutation-in-string
516,Longest Palindromic Subsequence,53.2%,Medium,0.0332870969222259, https://leetcode.com/problems/longest-palindromic-subsequence
315,Count of Smaller Numbers After Self,41.5%,Hard,0.03200842244384717, https://leetcode.com/problems/count-of-smaller-numbers-after-self
1114,Print in Order,65.7%,Easy,0.0317486983145803, https://leetcode.com/problems/print-in-order
228,Summary Ranges,39.5%,Medium,0.03157326191609021, https://leetcode.com/problems/summary-ranges
1123,Lowest Common Ancestor of Deepest Leaves,66.8%,Medium,0.03147388037973136, https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
222,Count Complete Tree Nodes,46.8%,Medium,0.031263400619043376, https://leetcode.com/problems/count-complete-tree-nodes
557,Reverse Words in a String III,69.8%,Easy,0.03063547953861342, https://leetcode.com/problems/reverse-words-in-a-string-iii
6,ZigZag Conversion,36.3%,Medium,0.03049597862981453, https://leetcode.com/problems/zigzag-conversion
415,Add Strings,47.5%,Easy,0.030009753867991852, https://leetcode.com/problems/add-strings
329,Longest Increasing Path in a Matrix,43.4%,Hard,0.029902560173869868, https://leetcode.com/problems/longest-increasing-path-in-a-matrix
16,3Sum Closest,46.0%,Medium,0.02976964023166436, https://leetcode.com/problems/3sum-closest
347,Top K Frequent Elements,61.2%,Medium,0.029662726238554857, https://leetcode.com/problems/top-k-frequent-elements
303,Range Sum Query - Immutable,44.7%,Easy,0.029549096691749193, https://leetcode.com/problems/range-sum-query-immutable
846,Hand of Straights,54.2%,Medium,0.029284669545175425, https://leetcode.com/problems/hand-of-straights
344,Reverse String,68.5%,Easy,0.029048355159926334, https://leetcode.com/problems/reverse-string
82,Remove Duplicates from Sorted List II,36.8%,Medium,0.028950236662501776, https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii
147,Insertion Sort List,41.1%,Medium,0.028675799976666333, https://leetcode.com/problems/insertion-sort-list
852,Peak Index in a Mountain Array,71.6%,Easy,0.02817087696669632, https://leetcode.com/problems/peak-index-in-a-mountain-array
234,Palindrome Linked List,39.3%,Easy,0.028003622014534227, https://leetcode.com/problems/palindrome-linked-list
19,Remove Nth Node From End of List,35.2%,Medium,0.027353171676046843, https://leetcode.com/problems/remove-nth-node-from-end-of-list
547,Friend Circles,58.6%,Medium,0.027307522052851193, https://leetcode.com/problems/friend-circles
11,Container With Most Water,50.8%,Medium,0.02727648457622222, https://leetcode.com/problems/container-with-most-water
437,Path Sum III,47.2%,Medium,0.02708561605844235, https://leetcode.com/problems/path-sum-iii
29,Divide Two Integers,16.4%,Medium,0.026820246545985277, https://leetcode.com/problems/divide-two-integers
205,Isomorphic Strings,39.8%,Easy,0.025789394882914186, https://leetcode.com/problems/isomorphic-strings
123,Best Time to Buy and Sell Stock III,37.5%,Hard,0.02516207671950806, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
733,Flood Fill,55.3%,Easy,0.02506396866321625, https://leetcode.com/problems/flood-fill
149,Max Points on a Line,16.9%,Hard,0.02484599858653081, https://leetcode.com/problems/max-points-on-a-line
202,Happy Number,50.4%,Easy,0.02483442856330386, https://leetcode.com/problems/happy-number
513,Find Bottom Left Tree Value,61.5%,Medium,0.02473842915612247, https://leetcode.com/problems/find-bottom-left-tree-value
310,Minimum Height Trees,32.3%,Medium,0.02446605215440636, https://leetcode.com/problems/minimum-height-trees
338,Counting Bits,69.5%,Medium,0.024325523767440974, https://leetcode.com/problems/counting-bits
395,Longest Substring with At Least K Repeating Characters,41.4%,Medium,0.024228925974379843, https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
348,Design Tic-Tac-Toe,54.3%,Medium,0.024214258120594613, https://leetcode.com/problems/design-tic-tac-toe
215,Kth Largest Element in an Array,55.4%,Medium,0.02414409892936099, https://leetcode.com/problems/kth-largest-element-in-an-array
252,Meeting Rooms,54.6%,Easy,0.02332467256640893, https://leetcode.com/problems/meeting-rooms
99,Recover Binary Search Tree,39.7%,Hard,0.02310905839365837, https://leetcode.com/problems/recover-binary-search-tree
678,Valid Parenthesis String,31.0%,Medium,0.02271534352147261, https://leetcode.com/problems/valid-parenthesis-string
216,Combination Sum III,56.6%,Medium,0.02261260849011709, https://leetcode.com/problems/combination-sum-iii
108,Convert Sorted Array to Binary Search Tree,57.9%,Easy,0.022033389270751453, https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
212,Word Search II,34.9%,Hard,0.02201654487096149, https://leetcode.com/problems/word-search-ii
287,Find the Duplicate Number,55.5%,Medium,0.021825992579766168, https://leetcode.com/problems/find-the-duplicate-number
112,Path Sum,41.2%,Easy,0.021701651897460775, https://leetcode.com/problems/path-sum
13,Roman to Integer,55.7%,Easy,0.021239435742925746, https://leetcode.com/problems/roman-to-integer
359,Logger Rate Limiter,70.8%,Easy,0.021053409197832343, https://leetcode.com/problems/logger-rate-limiter
224,Basic Calculator,36.8%,Hard,0.020965128465044926, https://leetcode.com/problems/basic-calculator
94,Binary Tree Inorder Traversal,63.3%,Medium,0.020787312070811408, https://leetcode.com/problems/binary-tree-inorder-traversal
122,Best Time to Buy and Sell Stock II,57.0%,Easy,0.020783855622427426, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.020730076462920684, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
96,Unique Binary Search Trees,52.9%,Medium,0.02067613283842731, https://leetcode.com/problems/unique-binary-search-trees
424,Longest Repeating Character Replacement,47.0%,Medium,0.020461071871340063, https://leetcode.com/problems/longest-repeating-character-replacement
268,Missing Number,51.7%,Easy,0.019380451549662482, https://leetcode.com/problems/missing-number
540,Single Element in a Sorted Array,57.9%,Medium,0.0192128868599912, https://leetcode.com/problems/single-element-in-a-sorted-array
450,Delete Node in a BST,43.1%,Medium,0.018536211907915243, https://leetcode.com/problems/delete-node-in-a-bst
35,Search Insert Position,42.6%,Easy,0.018459222797986813, https://leetcode.com/problems/search-insert-position
235,Lowest Common Ancestor of a Binary Search Tree,49.9%,Easy,0.018394142155974434, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
62,Unique Paths,54.1%,Medium,0.01835756003995383, https://leetcode.com/problems/unique-paths
438,Find All Anagrams in a String,43.3%,Medium,0.01819334596120571, https://leetcode.com/problems/find-all-anagrams-in-a-string
126,Word Ladder II,22.1%,Hard,0.017994187717865196, https://leetcode.com/problems/word-ladder-ii
406,Queue Reconstruction by Height,66.9%,Medium,0.01774669468133533, https://leetcode.com/problems/queue-reconstruction-by-height
38,Count and Say,44.6%,Easy,0.01753063983505879, https://leetcode.com/problems/count-and-say
17,Letter Combinations of a Phone Number,46.8%,Medium,0.017492519932499718, https://leetcode.com/problems/letter-combinations-of-a-phone-number
289,Game of Life,54.5%,Medium,0.0173239499317743, https://leetcode.com/problems/game-of-life
240,Search a 2D Matrix II,43.2%,Medium,0.0169815401480941, https://leetcode.com/problems/search-a-2d-matrix-ii
863,All Nodes Distance K in Binary Tree,55.4%,Medium,0.01695674371877865, https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
34,Find First and Last Position of Element in Sorted Array,36.2%,Medium,0.01688338088311469, https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
188,Best Time to Buy and Sell Stock IV,28.0%,Hard,0.01651565203072114, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
36,Valid Sudoku,48.7%,Medium,0.01625758350956095, https://leetcode.com/problems/valid-sudoku
340,Longest Substring with At Most K Distinct Characters,44.1%,Hard,0.016122880486563188, https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
334,Increasing Triplet Subsequence,40.0%,Medium,0.016058153168974937, https://leetcode.com/problems/increasing-triplet-subsequence
110,Balanced Binary Tree,43.5%,Easy,0.015742847432510365, https://leetcode.com/problems/balanced-binary-tree
28,Implement strStr(),34.5%,Easy,0.01568044672076543, https://leetcode.com/problems/implement-strstr
595,Big Countries,77.3%,Easy,0.015594857957906386, https://leetcode.com/problems/big-countries
1002,Find Common Characters,67.6%,Easy,0.015273301861833809, https://leetcode.com/problems/find-common-characters
1025,Divisor Game,66.3%,Easy,0.015015297119995507, https://leetcode.com/problems/divisor-game
621,Task Scheduler,50.1%,Medium,0.014546980601820143, https://leetcode.com/problems/task-scheduler
912,Sort an Array,63.9%,Medium,0.01443026482902881, https://leetcode.com/problems/sort-an-array
404,Sum of Left Leaves,50.9%,Easy,0.013981353230340547, https://leetcode.com/problems/sum-of-left-leaves
131,Palindrome Partitioning,47.5%,Medium,0.013903595538577326, https://leetcode.com/problems/palindrome-partitioning
703,Kth Largest Element in a Stream,49.7%,Easy,0.013898764390814973, https://leetcode.com/problems/kth-largest-element-in-a-stream
724,Find Pivot Index,44.0%,Easy,0.013850636933899008, https://leetcode.com/problems/find-pivot-index
581,Shortest Unsorted Continuous Subarray,31.1%,Easy,0.013342426083839913, https://leetcode.com/problems/shortest-unsorted-continuous-subarray
14,Longest Common Prefix,35.4%,Easy,0.013215687512885701, https://leetcode.com/problems/longest-common-prefix
39,Combination Sum,56.1%,Medium,0.012815211692867591, https://leetcode.com/problems/combination-sum
219,Contains Duplicate II,37.7%,Easy,0.01276748910345265, https://leetcode.com/problems/contains-duplicate-ii
129,Sum Root to Leaf Numbers,49.1%,Medium,0.012739025777429757, https://leetcode.com/problems/sum-root-to-leaf-numbers
50,Pow(x;n),30.3%,Medium,0.01254502984008178, https://leetcode.com/problems/powx-n
152,Maximum Product Subarray,31.7%,Medium,0.012534983069696118, https://leetcode.com/problems/maximum-product-subarray
124,Binary Tree Maximum Path Sum,34.3%,Hard,0.012403687139326226, https://leetcode.com/problems/binary-tree-maximum-path-sum
986,Interval List Intersections,67.3%,Medium,0.011969023795320735, https://leetcode.com/problems/interval-list-intersections
81,Search in Rotated Sorted Array II,33.0%,Medium,0.011689203815677656, https://leetcode.com/problems/search-in-rotated-sorted-array-ii
350,Intersection of Two Arrays II,51.4%,Easy,0.01168540951877908, https://leetcode.com/problems/intersection-of-two-arrays-ii
442,Find All Duplicates in an Array,67.8%,Medium,0.011675555865241341, https://leetcode.com/problems/find-all-duplicates-in-an-array
378,Kth Smallest Element in a Sorted Matrix,54.3%,Medium,0.011634802567699611, https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
48,Rotate Image,56.7%,Medium,0.011428695823622754, https://leetcode.com/problems/rotate-image
55,Jump Game,34.6%,Medium,0.011265609194218986, https://leetcode.com/problems/jump-game
232,Implement Queue using Stacks,49.6%,Easy,0.011242389348933884, https://leetcode.com/problems/implement-queue-using-stacks
171,Excel Sheet Column Number,55.9%,Easy,0.011195191092491645, https://leetcode.com/problems/excel-sheet-column-number
207,Course Schedule,43.1%,Medium,0.01113459480911671, https://leetcode.com/problems/course-schedule
957,Prison Cells After N Days,40.7%,Medium,0.010986103354595014, https://leetcode.com/problems/prison-cells-after-n-days
559,Maximum Depth of N-ary Tree,68.7%,Easy,0.010974047031976715, https://leetcode.com/problems/maximum-depth-of-n-ary-tree
414,Third Maximum Number,30.5%,Easy,0.010357420400453607, https://leetcode.com/problems/third-maximum-number
61,Rotate List,30.0%,Medium,0.009925639799969955, https://leetcode.com/problems/rotate-list
18,4Sum,33.7%,Medium,0.00984259914419414, https://leetcode.com/problems/4sum
746,Min Cost Climbing Stairs,50.3%,Easy,0.009818439209289494, https://leetcode.com/problems/min-cost-climbing-stairs
40,Combination Sum II,48.2%,Medium,0.009578617297069781, https://leetcode.com/problems/combination-sum-ii
70,Climbing Stairs,47.8%,Easy,0.009390798483527519, https://leetcode.com/problems/climbing-stairs
74,Search a 2D Matrix,36.5%,Medium,0.00934149716911291, https://leetcode.com/problems/search-a-2d-matrix
32,Longest Valid Parentheses,28.4%,Hard,0.009111680351255843, https://leetcode.com/problems/longest-valid-parentheses
208,Implement Trie (Prefix Tree),49.4%,Medium,0.009105457856626612, https://leetcode.com/problems/implement-trie-prefix-tree
392,Is Subsequence,49.2%,Easy,0.009088906012344746, https://leetcode.com/problems/is-subsequence
189,Rotate Array,34.7%,Easy,0.00904437880665999, https://leetcode.com/problems/rotate-array
238,Product of Array Except Self,60.1%,Medium,0.008821856860216758, https://leetcode.com/problems/product-of-array-except-self
198,House Robber,42.0%,Easy,0.008434914115059812, https://leetcode.com/problems/house-robber
617,Merge Two Binary Trees,74.1%,Easy,0.008262802639833214, https://leetcode.com/problems/merge-two-binary-trees
176,Second Highest Salary,31.6%,Easy,0.007393749024938284, https://leetcode.com/problems/second-highest-salary
349,Intersection of Two Arrays,62.5%,Easy,0.00725034896230682, https://leetcode.com/problems/intersection-of-two-arrays
412,Fizz Buzz,62.3%,Easy,0.007165921026143679, https://leetcode.com/problems/fizz-buzz
204,Count Primes,31.5%,Easy,0.007072165261362441, https://leetcode.com/problems/count-primes
448,Find All Numbers Disappeared in an Array,55.9%,Easy,0.006863444924982415, https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array
104,Maximum Depth of Binary Tree,66.0%,Easy,0.006261761223976207, https://leetcode.com/problems/maximum-depth-of-binary-tree
151,Reverse Words in a String,21.9%,Medium,0.0061359296669270605, https://leetcode.com/problems/reverse-words-in-a-string
144,Binary Tree Preorder Traversal,55.7%,Medium,0.0060975798681185, https://leetcode.com/problems/binary-tree-preorder-traversal
167,Two Sum II - Input array is sorted,54.1%,Easy,0.005507380022589096, https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
278,First Bad Version,35.7%,Easy,0.005391575265790431, https://leetcode.com/problems/first-bad-version
106,Construct Binary Tree from Inorder and Postorder Traversal,47.2%,Medium,0.005258250021550252, https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
237,Delete Node in a Linked List,63.8%,Easy,0.005144705881237697, https://leetcode.com/problems/delete-node-in-a-linked-list
75,Sort Colors,47.3%,Medium,0.004992521603120986, https://leetcode.com/problems/sort-colors
258,Add Digits,57.6%,Easy,0.004648528591812259, https://leetcode.com/problems/add-digits
26,Remove Duplicates from Sorted Array,45.1%,Easy,0.004385117141850828, https://leetcode.com/problems/remove-duplicates-from-sorted-array
210,Course Schedule II,40.7%,Medium,0.0042893974831731225, https://leetcode.com/problems/course-schedule-ii
977,Squares of a Sorted Array,72.1%,Easy,0.003891055492966611, https://leetcode.com/problems/squares-of-a-sorted-array
217,Contains Duplicate,56.0%,Easy,0.0037979536727587773, https://leetcode.com/problems/contains-duplicate
27,Remove Element,48.2%,Easy,0.0035524016043678225, https://leetcode.com/problems/remove-element
66,Plus One,43.0%,Easy,0.00326211347832938, https://leetcode.com/problems/plus-one
100,Same Tree,53.4%,Easy,0.003165227373565798, https://leetcode.com/problems/same-tree
1480,Running Sum of 1d Array,90.5%,Easy,0.0026196884456014947, https://leetcode.com/problems/running-sum-of-1d-array
ID,Title,Acceptance,Difficulty,Frequency,Leetcode Question Link
1396,Design Underground System,64.7%,Medium,2.1135252465771397, https://leetcode.com/problems/design-underground-system
430,Flatten a Multilevel Doubly Linked List,55.1%,Medium,2.069920145220796, https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
394,Decode String,50.0%,Medium,1.922952973608821, https://leetcode.com/problems/decode-string
1169,Invalid Transactions,31.2%,Medium,1.775985801996846, https://leetcode.com/problems/invalid-transactions
146,LRU Cache,33.2%,Medium,1.7600666299446097, https://leetcode.com/problems/lru-cache
723,Candy Crush,69.2%,Medium,1.6530191678816324, https://leetcode.com/problems/candy-crush
200,Number of Islands,46.8%,Medium,1.615390367064938, https://leetcode.com/problems/number-of-islands
138,Copy List with Random Pointer,36.4%,Medium,1.6042707455750564, https://leetcode.com/problems/copy-list-with-random-pointer
1274,Number of Ships in a Rectangle,66.3%,Hard,1.4573035739630815, https://leetcode.com/problems/number-of-ships-in-a-rectangle
253,Meeting Rooms II,45.7%,Medium,1.3103364023511066, https://leetcode.com/problems/meeting-rooms-ii
1029,Two City Scheduling,56.1%,Easy,1.1960323376867015, https://leetcode.com/problems/two-city-scheduling
1209,Remove All Adjacent Duplicates in String II,56.9%,Medium,1.1910135181291903, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
582,Kill Process,60.8%,Medium,1.1380445719557106, https://leetcode.com/problems/kill-process
451,Sort Characters By Frequency,63.0%,Medium,0.9935802696598246, https://leetcode.com/problems/sort-characters-by-frequency
380,Insert Delete GetRandom O(1),47.5%,Medium,0.9628799998106988, https://leetcode.com/problems/insert-delete-getrandom-o1
117,Populating Next Right Pointers in Each Node II,39.1%,Medium,0.9038177676556401, https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
445,Add Two Numbers II,54.5%,Medium,0.8983751201781012, https://leetcode.com/problems/add-two-numbers-ii
42,Trapping Rain Water,48.9%,Hard,0.8947784585060016, https://leetcode.com/problems/trapping-rain-water
98,Validate Binary Search Tree,27.8%,Medium,0.868197514095562, https://leetcode.com/problems/validate-binary-search-tree
2,Add Two Numbers,33.9%,Medium,0.8456334552268243, https://leetcode.com/problems/add-two-numbers
387,First Unique Character in a String,53.4%,Easy,0.8077227245408917, https://leetcode.com/problems/first-unique-character-in-a-string
155,Min Stack,44.5%,Easy,0.7784701890607135, https://leetcode.com/problems/min-stack
611,Valid Triangle Number,48.4%,Medium,0.6315030174487386, https://leetcode.com/problems/valid-triangle-number
1,Two Sum,45.6%,Easy,0.5958586063072399, https://leetcode.com/problems/two-sum
116,Populating Next Right Pointers in Each Node,45.2%,Medium,0.5943515521873914, https://leetcode.com/problems/populating-next-right-pointers-in-each-node
56,Merge Intervals,39.3%,Medium,0.5781542132082721, https://leetcode.com/problems/merge-intervals
242,Valid Anagram,56.9%,Easy,0.5645542892855558, https://leetcode.com/problems/valid-anagram
33,Search in Rotated Sorted Array,34.5%,Medium,0.5189131805357498, https://leetcode.com/problems/search-in-rotated-sorted-array
987,Vertical Order Traversal of a Binary Tree,36.6%,Medium,0.5046220573152461, https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
460,LFU Cache,34.2%,Hard,0.49273850527484675, https://leetcode.com/problems/lfu-cache
390,Elimination Game,44.5%,Medium,0.487438691067837, https://leetcode.com/problems/elimination-game
20,Valid Parentheses,39.0%,Easy,0.4867693607438125, https://leetcode.com/problems/valid-parentheses
3,Longest Substring Without Repeating Characters,30.4%,Medium,0.48411466774638867, https://leetcode.com/problems/longest-substring-without-repeating-characters
139,Word Break,40.1%,Medium,0.4760457233294034, https://leetcode.com/problems/word-break
399,Evaluate Division,51.6%,Medium,0.46497633645538805, https://leetcode.com/problems/evaluate-division
314,Binary Tree Vertical Order Traversal,45.3%,Medium,0.4380937008921841, https://leetcode.com/problems/binary-tree-vertical-order-traversal
1472,Design Browser History,64.6%,Medium,0.41985384556026395, https://leetcode.com/problems/design-browser-history
488,Zuma Game,39.9%,Hard,0.3999856423435388, https://leetcode.com/problems/zuma-game
269,Alien Dictionary,33.3%,Hard,0.379287301768956, https://leetcode.com/problems/alien-dictionary
114,Flatten Binary Tree to Linked List,49.3%,Medium,0.3666595336863693, https://leetcode.com/problems/flatten-binary-tree-to-linked-list
692,Top K Frequent Words,51.8%,Medium,0.35372832097636575, https://leetcode.com/problems/top-k-frequent-words
12,Integer to Roman,55.1%,Medium,0.35057238514000694, https://leetcode.com/problems/integer-to-roman
554,Brick Wall,50.0%,Medium,0.34539039007242767, https://leetcode.com/problems/brick-wall
301,Remove Invalid Parentheses,43.3%,Hard,0.3106405420076888, https://leetcode.com/problems/remove-invalid-parentheses
797,All Paths From Source to Target,77.9%,Medium,0.3046654057632776, https://leetcode.com/problems/all-paths-from-source-to-target
283,Move Zeroes,57.8%,Easy,0.27654976037504925, https://leetcode.com/problems/move-zeroes
105,Construct Binary Tree from Preorder and Inorder Traversal,48.8%,Medium,0.2757228816736699, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
422,Valid Word Square,37.7%,Easy,0.2578291093020998, https://leetcode.com/problems/valid-word-square
23,Merge k Sorted Lists,40.2%,Hard,0.2572061238898046, https://leetcode.com/problems/merge-k-sorted-lists
662,Maximum Width of Binary Tree,41.0%,Medium,0.23997959968856164, https://leetcode.com/problems/maximum-width-of-binary-tree
15,3Sum,26.8%,Medium,0.23615702163919466, https://leetcode.com/problems/3sum
79,Word Search,35.6%,Medium,0.23137350418457728, https://leetcode.com/problems/word-search
10,Regular Expression Matching,26.8%,Hard,0.23083119919105394, https://leetcode.com/problems/regular-expression-matching
21,Merge Two Sorted Lists,53.5%,Easy,0.22227395167049366, https://leetcode.com/problems/merge-two-sorted-lists
1223,Dice Roll Simulation,45.6%,Medium,0.2166710368085923, https://leetcode.com/problems/dice-roll-simulation
5,Longest Palindromic Substring,29.5%,Medium,0.20554421123878217, https://leetcode.com/problems/longest-palindromic-substring
463,Island Perimeter,65.7%,Easy,0.20102047685235075, https://leetcode.com/problems/island-perimeter
214,Shortest Palindrome,29.8%,Hard,0.19671029424605424, https://leetcode.com/problems/shortest-palindrome
173,Binary Search Tree Iterator,56.6%,Medium,0.1932027494363769, https://leetcode.com/problems/binary-search-tree-iterator
1047,Remove All Adjacent Duplicates In String,68.6%,Easy,0.19088376654809422, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
658,Find K Closest Elements,40.9%,Medium,0.18663941293482042, https://leetcode.com/problems/find-k-closest-elements
199,Binary Tree Right Side View,54.1%,Medium,0.18661020557359304, https://leetcode.com/problems/binary-tree-right-side-view
140,Word Break II,32.6%,Hard,0.17885934906548379, https://leetcode.com/problems/word-break-ii
1244,Design A Leaderboard,60.7%,Medium,0.17763094743610072, https://leetcode.com/problems/design-a-leaderboard
328,Odd Even Linked List,55.7%,Medium,0.17548836529558792, https://leetcode.com/problems/odd-even-linked-list
384,Shuffle an Array,52.8%,Medium,0.17247686769050424, https://leetcode.com/problems/shuffle-an-array
971,Flip Binary Tree To Match Preorder Traversal,45.7%,Medium,0.1670540846631662, https://leetcode.com/problems/flip-binary-tree-to-match-preorder-traversal
53,Maximum Subarray,46.5%,Easy,0.16188416901715558, https://leetcode.com/problems/maximum-subarray
443,String Compression,41.3%,Easy,0.15834355808729428, https://leetcode.com/problems/string-compression
322,Coin Change,35.5%,Medium,0.1575195768933631, https://leetcode.com/problems/coin-change
332,Reconstruct Itinerary,36.7%,Medium,0.15671959735502852, https://leetcode.com/problems/reconstruct-itinerary
72,Edit Distance,44.8%,Hard,0.14935692774322157, https://leetcode.com/problems/edit-distance
41,First Missing Positive,32.0%,Hard,0.14910731703527175, https://leetcode.com/problems/first-missing-positive
273,Integer to English Words,27.1%,Hard,0.13879705494759292, https://leetcode.com/problems/integer-to-english-words
128,Longest Consecutive Sequence,45.1%,Hard,0.13583040733187832, https://leetcode.com/problems/longest-consecutive-sequence
49,Group Anagrams,56.9%,Medium,0.1285763065181971, https://leetcode.com/problems/group-anagrams
118,Pascal's Triangle,52.5%,Easy,0.12852395589356347, https://leetcode.com/problems/pascals-triangle
121,Best Time to Buy and Sell Stock,50.5%,Easy,0.1275803229646801, https://leetcode.com/problems/best-time-to-buy-and-sell-stock
694,Number of Distinct Islands,56.0%,Medium,0.12516314295400602, https://leetcode.com/problems/number-of-distinct-islands
92,Reverse Linked List II,38.8%,Medium,0.12080664535613118, https://leetcode.com/problems/reverse-linked-list-ii
88,Merge Sorted Array,39.4%,Easy,0.11989115268466984, https://leetcode.com/problems/merge-sorted-array
239,Sliding Window Maximum,43.0%,Hard,0.11945579213218108, https://leetcode.com/problems/sliding-window-maximum
739,Daily Temperatures,63.3%,Medium,0.11646575243222568, https://leetcode.com/problems/daily-temperatures
127,Word Ladder,29.6%,Medium,0.11461293205885352, https://leetcode.com/problems/word-ladder
229,Majority Element II,35.6%,Medium,0.11355198202632807, https://leetcode.com/problems/majority-element-ii
120,Triangle,44.2%,Medium,0.11325730177515365, https://leetcode.com/problems/triangle
1188,Design Bounded Blocking Queue,70.5%,Medium,0.11030454201470608, https://leetcode.com/problems/design-bounded-blocking-queue
695,Max Area of Island,62.7%,Medium,0.10876995385464024, https://leetcode.com/problems/max-area-of-island
924,Minimize Malware Spread,42.0%,Hard,0.10821358464023274, https://leetcode.com/problems/minimize-malware-spread
889,Construct Binary Tree from Preorder and Postorder Traversal,66.2%,Medium,0.10711776476069794, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
311,Sparse Matrix Multiplication,61.9%,Medium,0.10648348040245009, https://leetcode.com/problems/sparse-matrix-multiplication
759,Employee Free Time,66.3%,Hard,0.10623186692973738, https://leetcode.com/problems/employee-free-time
78,Subsets,62.0%,Medium,0.10594222506883655, https://leetcode.com/problems/subsets
346,Moving Average from Data Stream,70.9%,Easy,0.10562785959739482, https://leetcode.com/problems/moving-average-from-data-stream
102,Binary Tree Level Order Traversal,54.6%,Medium,0.10461287933893608, https://leetcode.com/problems/binary-tree-level-order-traversal
1060,Missing Element in Sorted Array,54.5%,Medium,0.1042610103244094, https://leetcode.com/problems/missing-element-in-sorted-array
69,Sqrt(x),33.9%,Easy,0.09855995053811686, https://leetcode.com/problems/sqrtx
90,Subsets II,47.1%,Medium,0.09830555874512009, https://leetcode.com/problems/subsets-ii
84,Largest Rectangle in Histogram,35.2%,Hard,0.09762873497741681, https://leetcode.com/problems/largest-rectangle-in-histogram
529,Minesweeper,59.1%,Medium,0.09695424100489167, https://leetcode.com/problems/minesweeper
716,Max Stack,42.6%,Easy,0.09362342046209744, https://leetcode.com/problems/max-stack
836,Rectangle Overlap,48.6%,Easy,0.09358079943969791, https://leetcode.com/problems/rectangle-overlap
4,Median of Two Sorted Arrays,29.6%,Hard,0.09321199094445486, https://leetcode.com/problems/median-of-two-sorted-arrays
727,Minimum Window Subsequence,41.8%,Hard,0.09294611250944432, https://leetcode.com/problems/minimum-window-subsequence
510,Inorder Successor in BST II,58.0%,Medium,0.09244453252200126, https://leetcode.com/problems/inorder-successor-in-bst-ii
535,Encode and Decode TinyURL,79.9%,Medium,0.09208956510428265, https://leetcode.com/problems/encode-and-decode-tinyurl
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,0.0913825929084002, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
652,Find Duplicate Subtrees,50.2%,Medium,0.08907963005368878, https://leetcode.com/problems/find-duplicate-subtrees
7,Reverse Integer,25.8%,Easy,0.08735674450872549, https://leetcode.com/problems/reverse-integer
109,Convert Sorted List to Binary Search Tree,47.7%,Medium,0.08701137698962977, https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
221,Maximal Square,37.7%,Medium,0.08564432277809672, https://leetcode.com/problems/maximal-square
991,Broken Calculator,45.6%,Medium,0.08515780834030685, https://leetcode.com/problems/broken-calculator
22,Generate Parentheses,62.7%,Medium,0.08480542001364956, https://leetcode.com/problems/generate-parentheses
857,Minimum Cost to Hire K Workers,49.6%,Hard,0.08320805808821628, https://leetcode.com/problems/minimum-cost-to-hire-k-workers
46,Permutations,63.5%,Medium,0.08209632149618187, https://leetcode.com/problems/permutations
813,Largest Sum of Averages,49.9%,Medium,0.08201315166083516, https://leetcode.com/problems/largest-sum-of-averages
737,Sentence Similarity II,45.8%,Medium,0.08167803101426718, https://leetcode.com/problems/sentence-similarity-ii
496,Next Greater Element I,63.8%,Easy,0.07978711661783192, https://leetcode.com/problems/next-greater-element-i
250,Count Univalue Subtrees,52.0%,Medium,0.07975881838845024, https://leetcode.com/problems/count-univalue-subtrees
295,Find Median from Data Stream,44.3%,Hard,0.07821574644502474, https://leetcode.com/problems/find-median-from-data-stream
54,Spiral Matrix,34.1%,Medium,0.07792846120043545, https://leetcode.com/problems/spiral-matrix
1297,Maximum Number of Occurrences of a Substring,47.3%,Medium,0.07770898432731625, https://leetcode.com/problems/maximum-number-of-occurrences-of-a-substring
1347,Minimum Number of Steps to Make Two Strings Anagram,74.7%,Medium,0.07742472477971579, https://leetcode.com/problems/minimum-number-of-steps-to-make-two-strings-anagram
518,Coin Change 2,50.2%,Medium,0.07583984694698977, https://leetcode.com/problems/coin-change-2
8,String to Integer (atoi),15.4%,Medium,0.07412832776627384, https://leetcode.com/problems/string-to-integer-atoi
76,Minimum Window Substring,34.6%,Hard,0.07378420845373558, https://leetcode.com/problems/minimum-window-substring
503,Next Greater Element II,56.5%,Medium,0.07339377143296942, https://leetcode.com/problems/next-greater-element-ii
9,Palindrome Number,48.4%,Easy,0.07330899176233006, https://leetcode.com/problems/palindrome-number
209,Minimum Size Subarray Sum,38.2%,Medium,0.07329286546547308, https://leetcode.com/problems/minimum-size-subarray-sum
271,Encode and Decode Strings,31.5%,Medium,0.07197349962508924, https://leetcode.com/problems/encode-and-decode-strings
470,Implement Rand10() Using Rand7(),46.3%,Medium,0.07020425867324853, https://leetcode.com/problems/implement-rand10-using-rand7
432,All O`one Data Structure,32.4%,Hard,0.06887402901251127, https://leetcode.com/problems/all-oone-data-structure
504,Base 7,46.2%,Easy,0.06759329113252818, https://leetcode.com/problems/base-7
560,Subarray Sum Equals K,43.9%,Medium,0.06636621624059272, https://leetcode.com/problems/subarray-sum-equals-k
1145,Binary Tree Coloring Game,51.2%,Medium,0.06592172080482424, https://leetcode.com/problems/binary-tree-coloring-game
1105,Filling Bookcase Shelves,58.1%,Medium,0.06464285626208545, https://leetcode.com/problems/filling-bookcase-shelves
628,Maximum Product of Three Numbers,47.1%,Easy,0.06453852113757116, https://leetcode.com/problems/maximum-product-of-three-numbers
565,Array Nesting,55.5%,Medium,0.06351340572232586, https://leetcode.com/problems/array-nesting
397,Integer Replacement,32.9%,Medium,0.06331227941432688, https://leetcode.com/problems/integer-replacement
413,Arithmetic Slices,57.9%,Medium,0.06286986221654821, https://leetcode.com/problems/arithmetic-slices
353,Design Snake Game,34.2%,Medium,0.06053284922884233, https://leetcode.com/problems/design-snake-game
153,Find Minimum in Rotated Sorted Array,45.1%,Medium,0.05846413569782837, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
160,Intersection of Two Linked Lists,40.6%,Easy,0.05844735064567987, https://leetcode.com/problems/intersection-of-two-linked-lists
417,Pacific Atlantic Water Flow,41.1%,Medium,0.057523844138186606, https://leetcode.com/problems/pacific-atlantic-water-flow
362,Design Hit Counter,63.7%,Medium,0.05622967649867821, https://leetcode.com/problems/design-hit-counter
1249,Minimum Remove to Make Valid Parentheses,62.5%,Medium,0.05613145611169511, https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
230,Kth Smallest Element in a BST,60.2%,Medium,0.055629976214953934, https://leetcode.com/problems/kth-smallest-element-in-a-bst
30,Substring with Concatenation of All Words,25.4%,Hard,0.05509349054082484, https://leetcode.com/problems/substring-with-concatenation-of-all-words
752,Open the Lock,51.8%,Medium,0.05449289949671372, https://leetcode.com/problems/open-the-lock
1054,Distant Barcodes,43.2%,Medium,0.054435206555017046, https://leetcode.com/problems/distant-barcodes
64,Minimum Path Sum,54.5%,Medium,0.05384075367843773, https://leetcode.com/problems/minimum-path-sum
44,Wildcard Matching,24.7%,Hard,0.053722215229247965, https://leetcode.com/problems/wildcard-matching
426,Convert Binary Search Tree to Sorted Doubly Linked List,59.1%,Medium,0.05368014946362379, https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
63,Unique Paths II,34.6%,Medium,0.05324937607387791, https://leetcode.com/problems/unique-paths-ii
31,Next Permutation,32.6%,Medium,0.05265913800819017, https://leetcode.com/problems/next-permutation
85,Maximal Rectangle,37.7%,Hard,0.05229949940284891, https://leetcode.com/problems/maximal-rectangle
286,Walls and Gates,54.5%,Medium,0.05155780966485001, https://leetcode.com/problems/walls-and-gates
708,Insert into a Sorted Circular Linked List,31.6%,Medium,0.05142521180743711, https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
1312,Minimum Insertion Steps to Make a String Palindrome,58.1%,Hard,0.050261834780888255, https://leetcode.com/problems/minimum-insertion-steps-to-make-a-string-palindrome
285,Inorder Successor in BST,40.4%,Medium,0.049569618859417214, https://leetcode.com/problems/inorder-successor-in-bst
203,Remove Linked List Elements,38.6%,Easy,0.04798700179553833, https://leetcode.com/problems/remove-linked-list-elements
125,Valid Palindrome,36.7%,Easy,0.047702249651065814, https://leetcode.com/problems/valid-palindrome
336,Palindrome Pairs,33.7%,Hard,0.04690191367275952, https://leetcode.com/problems/palindrome-pairs
556,Next Greater Element III,31.7%,Medium,0.04679216150675895, https://leetcode.com/problems/next-greater-element-iii
543,Diameter of Binary Tree,48.4%,Easy,0.04676784186766119, https://leetcode.com/problems/diameter-of-binary-tree
978,Longest Turbulent Subarray,46.6%,Medium,0.046737477851689815, https://leetcode.com/problems/longest-turbulent-subarray
206,Reverse Linked List,62.5%,Easy,0.046346967254127305, https://leetcode.com/problems/reverse-linked-list
97,Interleaving String,31.5%,Hard,0.04548535439411653, https://leetcode.com/problems/interleaving-string
784,Letter Case Permutation,64.6%,Medium,0.045030118720867006, https://leetcode.com/problems/letter-case-permutation
136,Single Number,65.5%,Easy,0.04495454584592534, https://leetcode.com/problems/single-number
341,Flatten Nested List Iterator,52.9%,Medium,0.04440788848944038, https://leetcode.com/problems/flatten-nested-list-iterator
642,Design Search Autocomplete System,44.7%,Hard,0.04334372921647208, https://leetcode.com/problems/design-search-autocomplete-system
895,Maximum Frequency Stack,60.6%,Hard,0.04329680575332419, https://leetcode.com/problems/maximum-frequency-stack
435,Non-overlapping Intervals,42.9%,Medium,0.04325518123147988, https://leetcode.com/problems/non-overlapping-intervals
821,Shortest Distance to a Character,66.9%,Easy,0.043110123653728516, https://leetcode.com/problems/shortest-distance-to-a-character
1155,Number of Dice Rolls With Target Sum,49.0%,Medium,0.04204262329555109, https://leetcode.com/problems/number-of-dice-rolls-with-target-sum
721,Accounts Merge,48.8%,Medium,0.04200337458562934, https://leetcode.com/problems/accounts-merge
787,Cheapest Flights Within K Stops,39.3%,Medium,0.04186657939278993, https://leetcode.com/problems/cheapest-flights-within-k-stops
532,K-diff Pairs in an Array,31.6%,Easy,0.041672696400568025, https://leetcode.com/problems/k-diff-pairs-in-an-array
572,Subtree of Another Tree,44.1%,Easy,0.041179261223646485, https://leetcode.com/problems/subtree-of-another-tree
101,Symmetric Tree,46.8%,Easy,0.04094139037736073, https://leetcode.com/problems/symmetric-tree
292,Nim Game,54.9%,Easy,0.03996979643236185, https://leetcode.com/problems/nim-game
162,Find Peak Element,43.3%,Medium,0.039043060072524054, https://leetcode.com/problems/find-peak-element
993,Cousins in Binary Tree,52.0%,Easy,0.03876454345024432, https://leetcode.com/problems/cousins-in-binary-tree
24,Swap Nodes in Pairs,50.4%,Medium,0.03826607060639552, https://leetcode.com/problems/swap-nodes-in-pairs
47,Permutations II,46.4%,Medium,0.038145268259690404, https://leetcode.com/problems/permutations-ii
270,Closest Binary Search Tree Value,48.5%,Easy,0.03812405784173832, https://leetcode.com/problems/closest-binary-search-tree-value
402,Remove K Digits,28.4%,Medium,0.03755134565213245, https://leetcode.com/problems/remove-k-digits
646,Maximum Length of Pair Chain,51.9%,Medium,0.036870535808327706, https://leetcode.com/problems/maximum-length-of-pair-chain
91,Decode Ways,24.7%,Medium,0.03673102791879485, https://leetcode.com/problems/decode-ways
673,Number of Longest Increasing Subsequence,35.7%,Medium,0.036467121912812143, https://leetcode.com/problems/number-of-longest-increasing-subsequence
71,Simplify Path,32.6%,Medium,0.03622126343431837, https://leetcode.com/problems/simplify-path
650,2 Keys Keyboard,49.2%,Medium,0.035910501305770864, https://leetcode.com/problems/2-keys-keyboard
226,Invert Binary Tree,65.0%,Easy,0.03393837323839263, https://leetcode.com/problems/invert-binary-tree
274,H-Index,36.1%,Medium,0.03364488914272426, https://leetcode.com/problems/h-index
567,Permutation in String,44.4%,Medium,0.033324075731591886, https://leetcode.com/problems/permutation-in-string
516,Longest Palindromic Subsequence,53.2%,Medium,0.0332870969222259, https://leetcode.com/problems/longest-palindromic-subsequence
315,Count of Smaller Numbers After Self,41.5%,Hard,0.03200842244384717, https://leetcode.com/problems/count-of-smaller-numbers-after-self
1114,Print in Order,65.7%,Easy,0.0317486983145803, https://leetcode.com/problems/print-in-order
228,Summary Ranges,39.5%,Medium,0.03157326191609021, https://leetcode.com/problems/summary-ranges
1123,Lowest Common Ancestor of Deepest Leaves,66.8%,Medium,0.03147388037973136, https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
222,Count Complete Tree Nodes,46.8%,Medium,0.031263400619043376, https://leetcode.com/problems/count-complete-tree-nodes
557,Reverse Words in a String III,69.8%,Easy,0.03063547953861342, https://leetcode.com/problems/reverse-words-in-a-string-iii
6,ZigZag Conversion,36.3%,Medium,0.03049597862981453, https://leetcode.com/problems/zigzag-conversion
415,Add Strings,47.5%,Easy,0.030009753867991852, https://leetcode.com/problems/add-strings
329,Longest Increasing Path in a Matrix,43.4%,Hard,0.029902560173869868, https://leetcode.com/problems/longest-increasing-path-in-a-matrix
16,3Sum Closest,46.0%,Medium,0.02976964023166436, https://leetcode.com/problems/3sum-closest
347,Top K Frequent Elements,61.2%,Medium,0.029662726238554857, https://leetcode.com/problems/top-k-frequent-elements
303,Range Sum Query - Immutable,44.7%,Easy,0.029549096691749193, https://leetcode.com/problems/range-sum-query-immutable
846,Hand of Straights,54.2%,Medium,0.029284669545175425, https://leetcode.com/problems/hand-of-straights
344,Reverse String,68.5%,Easy,0.029048355159926334, https://leetcode.com/problems/reverse-string
82,Remove Duplicates from Sorted List II,36.8%,Medium,0.028950236662501776, https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii
147,Insertion Sort List,41.1%,Medium,0.028675799976666333, https://leetcode.com/problems/insertion-sort-list
852,Peak Index in a Mountain Array,71.6%,Easy,0.02817087696669632, https://leetcode.com/problems/peak-index-in-a-mountain-array
234,Palindrome Linked List,39.3%,Easy,0.028003622014534227, https://leetcode.com/problems/palindrome-linked-list
19,Remove Nth Node From End of List,35.2%,Medium,0.027353171676046843, https://leetcode.com/problems/remove-nth-node-from-end-of-list
547,Friend Circles,58.6%,Medium,0.027307522052851193, https://leetcode.com/problems/friend-circles
11,Container With Most Water,50.8%,Medium,0.02727648457622222, https://leetcode.com/problems/container-with-most-water
437,Path Sum III,47.2%,Medium,0.02708561605844235, https://leetcode.com/problems/path-sum-iii
29,Divide Two Integers,16.4%,Medium,0.026820246545985277, https://leetcode.com/problems/divide-two-integers
205,Isomorphic Strings,39.8%,Easy,0.025789394882914186, https://leetcode.com/problems/isomorphic-strings
123,Best Time to Buy and Sell Stock III,37.5%,Hard,0.02516207671950806, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
733,Flood Fill,55.3%,Easy,0.02506396866321625, https://leetcode.com/problems/flood-fill
149,Max Points on a Line,16.9%,Hard,0.02484599858653081, https://leetcode.com/problems/max-points-on-a-line
202,Happy Number,50.4%,Easy,0.02483442856330386, https://leetcode.com/problems/happy-number
513,Find Bottom Left Tree Value,61.5%,Medium,0.02473842915612247, https://leetcode.com/problems/find-bottom-left-tree-value
310,Minimum Height Trees,32.3%,Medium,0.02446605215440636, https://leetcode.com/problems/minimum-height-trees
338,Counting Bits,69.5%,Medium,0.024325523767440974, https://leetcode.com/problems/counting-bits
395,Longest Substring with At Least K Repeating Characters,41.4%,Medium,0.024228925974379843, https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
348,Design Tic-Tac-Toe,54.3%,Medium,0.024214258120594613, https://leetcode.com/problems/design-tic-tac-toe
215,Kth Largest Element in an Array,55.4%,Medium,0.02414409892936099, https://leetcode.com/problems/kth-largest-element-in-an-array
252,Meeting Rooms,54.6%,Easy,0.02332467256640893, https://leetcode.com/problems/meeting-rooms
99,Recover Binary Search Tree,39.7%,Hard,0.02310905839365837, https://leetcode.com/problems/recover-binary-search-tree
678,Valid Parenthesis String,31.0%,Medium,0.02271534352147261, https://leetcode.com/problems/valid-parenthesis-string
216,Combination Sum III,56.6%,Medium,0.02261260849011709, https://leetcode.com/problems/combination-sum-iii
108,Convert Sorted Array to Binary Search Tree,57.9%,Easy,0.022033389270751453, https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
212,Word Search II,34.9%,Hard,0.02201654487096149, https://leetcode.com/problems/word-search-ii
287,Find the Duplicate Number,55.5%,Medium,0.021825992579766168, https://leetcode.com/problems/find-the-duplicate-number
112,Path Sum,41.2%,Easy,0.021701651897460775, https://leetcode.com/problems/path-sum
13,Roman to Integer,55.7%,Easy,0.021239435742925746, https://leetcode.com/problems/roman-to-integer
359,Logger Rate Limiter,70.8%,Easy,0.021053409197832343, https://leetcode.com/problems/logger-rate-limiter
224,Basic Calculator,36.8%,Hard,0.020965128465044926, https://leetcode.com/problems/basic-calculator
94,Binary Tree Inorder Traversal,63.3%,Medium,0.020787312070811408, https://leetcode.com/problems/binary-tree-inorder-traversal
122,Best Time to Buy and Sell Stock II,57.0%,Easy,0.020783855622427426, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.020730076462920684, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
96,Unique Binary Search Trees,52.9%,Medium,0.02067613283842731, https://leetcode.com/problems/unique-binary-search-trees
424,Longest Repeating Character Replacement,47.0%,Medium,0.020461071871340063, https://leetcode.com/problems/longest-repeating-character-replacement
268,Missing Number,51.7%,Easy,0.019380451549662482, https://leetcode.com/problems/missing-number
540,Single Element in a Sorted Array,57.9%,Medium,0.0192128868599912, https://leetcode.com/problems/single-element-in-a-sorted-array
450,Delete Node in a BST,43.1%,Medium,0.018536211907915243, https://leetcode.com/problems/delete-node-in-a-bst
35,Search Insert Position,42.6%,Easy,0.018459222797986813, https://leetcode.com/problems/search-insert-position
235,Lowest Common Ancestor of a Binary Search Tree,49.9%,Easy,0.018394142155974434, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
62,Unique Paths,54.1%,Medium,0.01835756003995383, https://leetcode.com/problems/unique-paths
438,Find All Anagrams in a String,43.3%,Medium,0.01819334596120571, https://leetcode.com/problems/find-all-anagrams-in-a-string
126,Word Ladder II,22.1%,Hard,0.017994187717865196, https://leetcode.com/problems/word-ladder-ii
406,Queue Reconstruction by Height,66.9%,Medium,0.01774669468133533, https://leetcode.com/problems/queue-reconstruction-by-height
38,Count and Say,44.6%,Easy,0.01753063983505879, https://leetcode.com/problems/count-and-say
17,Letter Combinations of a Phone Number,46.8%,Medium,0.017492519932499718, https://leetcode.com/problems/letter-combinations-of-a-phone-number
289,Game of Life,54.5%,Medium,0.0173239499317743, https://leetcode.com/problems/game-of-life
240,Search a 2D Matrix II,43.2%,Medium,0.0169815401480941, https://leetcode.com/problems/search-a-2d-matrix-ii
863,All Nodes Distance K in Binary Tree,55.4%,Medium,0.01695674371877865, https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
34,Find First and Last Position of Element in Sorted Array,36.2%,Medium,0.01688338088311469, https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
188,Best Time to Buy and Sell Stock IV,28.0%,Hard,0.01651565203072114, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
36,Valid Sudoku,48.7%,Medium,0.01625758350956095, https://leetcode.com/problems/valid-sudoku
340,Longest Substring with At Most K Distinct Characters,44.1%,Hard,0.016122880486563188, https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
334,Increasing Triplet Subsequence,40.0%,Medium,0.016058153168974937, https://leetcode.com/problems/increasing-triplet-subsequence
110,Balanced Binary Tree,43.5%,Easy,0.015742847432510365, https://leetcode.com/problems/balanced-binary-tree
28,Implement strStr(),34.5%,Easy,0.01568044672076543, https://leetcode.com/problems/implement-strstr
595,Big Countries,77.3%,Easy,0.015594857957906386, https://leetcode.com/problems/big-countries
1002,Find Common Characters,67.6%,Easy,0.015273301861833809, https://leetcode.com/problems/find-common-characters
1025,Divisor Game,66.3%,Easy,0.015015297119995507, https://leetcode.com/problems/divisor-game
621,Task Scheduler,50.1%,Medium,0.014546980601820143, https://leetcode.com/problems/task-scheduler
912,Sort an Array,63.9%,Medium,0.01443026482902881, https://leetcode.com/problems/sort-an-array
404,Sum of Left Leaves,50.9%,Easy,0.013981353230340547, https://leetcode.com/problems/sum-of-left-leaves
131,Palindrome Partitioning,47.5%,Medium,0.013903595538577326, https://leetcode.com/problems/palindrome-partitioning
703,Kth Largest Element in a Stream,49.7%,Easy,0.013898764390814973, https://leetcode.com/problems/kth-largest-element-in-a-stream
724,Find Pivot Index,44.0%,Easy,0.013850636933899008, https://leetcode.com/problems/find-pivot-index
581,Shortest Unsorted Continuous Subarray,31.1%,Easy,0.013342426083839913, https://leetcode.com/problems/shortest-unsorted-continuous-subarray
14,Longest Common Prefix,35.4%,Easy,0.013215687512885701, https://leetcode.com/problems/longest-common-prefix
39,Combination Sum,56.1%,Medium,0.012815211692867591, https://leetcode.com/problems/combination-sum
219,Contains Duplicate II,37.7%,Easy,0.01276748910345265, https://leetcode.com/problems/contains-duplicate-ii
129,Sum Root to Leaf Numbers,49.1%,Medium,0.012739025777429757, https://leetcode.com/problems/sum-root-to-leaf-numbers
50,Pow(x;n),30.3%,Medium,0.01254502984008178, https://leetcode.com/problems/powx-n
152,Maximum Product Subarray,31.7%,Medium,0.012534983069696118, https://leetcode.com/problems/maximum-product-subarray
124,Binary Tree Maximum Path Sum,34.3%,Hard,0.012403687139326226, https://leetcode.com/problems/binary-tree-maximum-path-sum
986,Interval List Intersections,67.3%,Medium,0.011969023795320735, https://leetcode.com/problems/interval-list-intersections
81,Search in Rotated Sorted Array II,33.0%,Medium,0.011689203815677656, https://leetcode.com/problems/search-in-rotated-sorted-array-ii
350,Intersection of Two Arrays II,51.4%,Easy,0.01168540951877908, https://leetcode.com/problems/intersection-of-two-arrays-ii
442,Find All Duplicates in an Array,67.8%,Medium,0.011675555865241341, https://leetcode.com/problems/find-all-duplicates-in-an-array
378,Kth Smallest Element in a Sorted Matrix,54.3%,Medium,0.011634802567699611, https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
48,Rotate Image,56.7%,Medium,0.011428695823622754, https://leetcode.com/problems/rotate-image
55,Jump Game,34.6%,Medium,0.011265609194218986, https://leetcode.com/problems/jump-game
232,Implement Queue using Stacks,49.6%,Easy,0.011242389348933884, https://leetcode.com/problems/implement-queue-using-stacks
171,Excel Sheet Column Number,55.9%,Easy,0.011195191092491645, https://leetcode.com/problems/excel-sheet-column-number
207,Course Schedule,43.1%,Medium,0.01113459480911671, https://leetcode.com/problems/course-schedule
957,Prison Cells After N Days,40.7%,Medium,0.010986103354595014, https://leetcode.com/problems/prison-cells-after-n-days
559,Maximum Depth of N-ary Tree,68.7%,Easy,0.010974047031976715, https://leetcode.com/problems/maximum-depth-of-n-ary-tree
414,Third Maximum Number,30.5%,Easy,0.010357420400453607, https://leetcode.com/problems/third-maximum-number
61,Rotate List,30.0%,Medium,0.009925639799969955, https://leetcode.com/problems/rotate-list
18,4Sum,33.7%,Medium,0.00984259914419414, https://leetcode.com/problems/4sum
746,Min Cost Climbing Stairs,50.3%,Easy,0.009818439209289494, https://leetcode.com/problems/min-cost-climbing-stairs
40,Combination Sum II,48.2%,Medium,0.009578617297069781, https://leetcode.com/problems/combination-sum-ii
70,Climbing Stairs,47.8%,Easy,0.009390798483527519, https://leetcode.com/problems/climbing-stairs
74,Search a 2D Matrix,36.5%,Medium,0.00934149716911291, https://leetcode.com/problems/search-a-2d-matrix
32,Longest Valid Parentheses,28.4%,Hard,0.009111680351255843, https://leetcode.com/problems/longest-valid-parentheses
208,Implement Trie (Prefix Tree),49.4%,Medium,0.009105457856626612, https://leetcode.com/problems/implement-trie-prefix-tree
392,Is Subsequence,49.2%,Easy,0.009088906012344746, https://leetcode.com/problems/is-subsequence
189,Rotate Array,34.7%,Easy,0.00904437880665999, https://leetcode.com/problems/rotate-array
238,Product of Array Except Self,60.1%,Medium,0.008821856860216758, https://leetcode.com/problems/product-of-array-except-self
198,House Robber,42.0%,Easy,0.008434914115059812, https://leetcode.com/problems/house-robber
617,Merge Two Binary Trees,74.1%,Easy,0.008262802639833214, https://leetcode.com/problems/merge-two-binary-trees
176,Second Highest Salary,31.6%,Easy,0.007393749024938284, https://leetcode.com/problems/second-highest-salary
349,Intersection of Two Arrays,62.5%,Easy,0.00725034896230682, https://leetcode.com/problems/intersection-of-two-arrays
412,Fizz Buzz,62.3%,Easy,0.007165921026143679, https://leetcode.com/problems/fizz-buzz
204,Count Primes,31.5%,Easy,0.007072165261362441, https://leetcode.com/problems/count-primes
448,Find All Numbers Disappeared in an Array,55.9%,Easy,0.006863444924982415, https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array
104,Maximum Depth of Binary Tree,66.0%,Easy,0.006261761223976207, https://leetcode.com/problems/maximum-depth-of-binary-tree
151,Reverse Words in a String,21.9%,Medium,0.0061359296669270605, https://leetcode.com/problems/reverse-words-in-a-string
144,Binary Tree Preorder Traversal,55.7%,Medium,0.0060975798681185, https://leetcode.com/problems/binary-tree-preorder-traversal
167,Two Sum II - Input array is sorted,54.1%,Easy,0.005507380022589096, https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
278,First Bad Version,35.7%,Easy,0.005391575265790431, https://leetcode.com/problems/first-bad-version
106,Construct Binary Tree from Inorder and Postorder Traversal,47.2%,Medium,0.005258250021550252, https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
237,Delete Node in a Linked List,63.8%,Easy,0.005144705881237697, https://leetcode.com/problems/delete-node-in-a-linked-list
75,Sort Colors,47.3%,Medium,0.004992521603120986, https://leetcode.com/problems/sort-colors
258,Add Digits,57.6%,Easy,0.004648528591812259, https://leetcode.com/problems/add-digits
26,Remove Duplicates from Sorted Array,45.1%,Easy,0.004385117141850828, https://leetcode.com/problems/remove-duplicates-from-sorted-array
210,Course Schedule II,40.7%,Medium,0.0042893974831731225, https://leetcode.com/problems/course-schedule-ii
977,Squares of a Sorted Array,72.1%,Easy,0.003891055492966611, https://leetcode.com/problems/squares-of-a-sorted-array
217,Contains Duplicate,56.0%,Easy,0.0037979536727587773, https://leetcode.com/problems/contains-duplicate
27,Remove Element,48.2%,Easy,0.0035524016043678225, https://leetcode.com/problems/remove-element
66,Plus One,43.0%,Easy,0.00326211347832938, https://leetcode.com/problems/plus-one
100,Same Tree,53.4%,Easy,0.003165227373565798, https://leetcode.com/problems/same-tree
1480,Running Sum of 1d Array,90.5%,Easy,0.0026196884456014947, https://leetcode.com/problems/running-sum-of-1d-array
1 1396 ID Design Underground System Title 64.7% Acceptance Medium Difficulty 2.1135252465771397 Frequency https://leetcode.com/problems/design-underground-system Leetcode Question Link
2 430 1396 Flatten a Multilevel Doubly Linked List Design Underground System 55.1% 64.7% Medium Medium 2.069920145220796 2.1135252465771397 https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list https://leetcode.com/problems/design-underground-system
3 394 430 Decode String Flatten a Multilevel Doubly Linked List 50.0% 55.1% Medium Medium 1.922952973608821 2.069920145220796 https://leetcode.com/problems/decode-string https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
4 1169 394 Invalid Transactions Decode String 31.2% 50.0% Medium Medium 1.775985801996846 1.922952973608821 https://leetcode.com/problems/invalid-transactions https://leetcode.com/problems/decode-string
5 146 1169 LRU Cache Invalid Transactions 33.2% 31.2% Medium Medium 1.7600666299446097 1.775985801996846 https://leetcode.com/problems/lru-cache https://leetcode.com/problems/invalid-transactions
6 723 146 Candy Crush LRU Cache 69.2% 33.2% Medium Medium 1.6530191678816324 1.7600666299446097 https://leetcode.com/problems/candy-crush https://leetcode.com/problems/lru-cache
7 200 723 Number of Islands Candy Crush 46.8% 69.2% Medium Medium 1.615390367064938 1.6530191678816324 https://leetcode.com/problems/number-of-islands https://leetcode.com/problems/candy-crush
8 138 200 Copy List with Random Pointer Number of Islands 36.4% 46.8% Medium Medium 1.6042707455750564 1.615390367064938 https://leetcode.com/problems/copy-list-with-random-pointer https://leetcode.com/problems/number-of-islands
9 1274 138 Number of Ships in a Rectangle Copy List with Random Pointer 66.3% 36.4% Hard Medium 1.4573035739630815 1.6042707455750564 https://leetcode.com/problems/number-of-ships-in-a-rectangle https://leetcode.com/problems/copy-list-with-random-pointer
10 253 1274 Meeting Rooms II Number of Ships in a Rectangle 45.7% 66.3% Medium Hard 1.3103364023511066 1.4573035739630815 https://leetcode.com/problems/meeting-rooms-ii https://leetcode.com/problems/number-of-ships-in-a-rectangle
11 1029 253 Two City Scheduling Meeting Rooms II 56.1% 45.7% Easy Medium 1.1960323376867015 1.3103364023511066 https://leetcode.com/problems/two-city-scheduling https://leetcode.com/problems/meeting-rooms-ii
12 1209 1029 Remove All Adjacent Duplicates in String II Two City Scheduling 56.9% 56.1% Medium Easy 1.1910135181291903 1.1960323376867015 https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii https://leetcode.com/problems/two-city-scheduling
13 582 1209 Kill Process Remove All Adjacent Duplicates in String II 60.8% 56.9% Medium Medium 1.1380445719557106 1.1910135181291903 https://leetcode.com/problems/kill-process https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
14 451 582 Sort Characters By Frequency Kill Process 63.0% 60.8% Medium Medium 0.9935802696598246 1.1380445719557106 https://leetcode.com/problems/sort-characters-by-frequency https://leetcode.com/problems/kill-process
15 380 451 Insert Delete GetRandom O(1) Sort Characters By Frequency 47.5% 63.0% Medium Medium 0.9628799998106988 0.9935802696598246 https://leetcode.com/problems/insert-delete-getrandom-o1 https://leetcode.com/problems/sort-characters-by-frequency
16 117 380 Populating Next Right Pointers in Each Node II Insert Delete GetRandom O(1) 39.1% 47.5% Medium Medium 0.9038177676556401 0.9628799998106988 https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii https://leetcode.com/problems/insert-delete-getrandom-o1
17 445 117 Add Two Numbers II Populating Next Right Pointers in Each Node II 54.5% 39.1% Medium Medium 0.8983751201781012 0.9038177676556401 https://leetcode.com/problems/add-two-numbers-ii https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
18 42 445 Trapping Rain Water Add Two Numbers II 48.9% 54.5% Hard Medium 0.8947784585060016 0.8983751201781012 https://leetcode.com/problems/trapping-rain-water https://leetcode.com/problems/add-two-numbers-ii
19 98 42 Validate Binary Search Tree Trapping Rain Water 27.8% 48.9% Medium Hard 0.868197514095562 0.8947784585060016 https://leetcode.com/problems/validate-binary-search-tree https://leetcode.com/problems/trapping-rain-water
20 2 98 Add Two Numbers Validate Binary Search Tree 33.9% 27.8% Medium Medium 0.8456334552268243 0.868197514095562 https://leetcode.com/problems/add-two-numbers https://leetcode.com/problems/validate-binary-search-tree
21 387 2 First Unique Character in a String Add Two Numbers 53.4% 33.9% Easy Medium 0.8077227245408917 0.8456334552268243 https://leetcode.com/problems/first-unique-character-in-a-string https://leetcode.com/problems/add-two-numbers
22 155 387 Min Stack First Unique Character in a String 44.5% 53.4% Easy Easy 0.7784701890607135 0.8077227245408917 https://leetcode.com/problems/min-stack https://leetcode.com/problems/first-unique-character-in-a-string
23 611 155 Valid Triangle Number Min Stack 48.4% 44.5% Medium Easy 0.6315030174487386 0.7784701890607135 https://leetcode.com/problems/valid-triangle-number https://leetcode.com/problems/min-stack
24 1 611 Two Sum Valid Triangle Number 45.6% 48.4% Easy Medium 0.5958586063072399 0.6315030174487386 https://leetcode.com/problems/two-sum https://leetcode.com/problems/valid-triangle-number
25 116 1 Populating Next Right Pointers in Each Node Two Sum 45.2% 45.6% Medium Easy 0.5943515521873914 0.5958586063072399 https://leetcode.com/problems/populating-next-right-pointers-in-each-node https://leetcode.com/problems/two-sum
26 56 116 Merge Intervals Populating Next Right Pointers in Each Node 39.3% 45.2% Medium Medium 0.5781542132082721 0.5943515521873914 https://leetcode.com/problems/merge-intervals https://leetcode.com/problems/populating-next-right-pointers-in-each-node
27 242 56 Valid Anagram Merge Intervals 56.9% 39.3% Easy Medium 0.5645542892855558 0.5781542132082721 https://leetcode.com/problems/valid-anagram https://leetcode.com/problems/merge-intervals
28 33 242 Search in Rotated Sorted Array Valid Anagram 34.5% 56.9% Medium Easy 0.5189131805357498 0.5645542892855558 https://leetcode.com/problems/search-in-rotated-sorted-array https://leetcode.com/problems/valid-anagram
29 987 33 Vertical Order Traversal of a Binary Tree Search in Rotated Sorted Array 36.6% 34.5% Medium Medium 0.5046220573152461 0.5189131805357498 https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree https://leetcode.com/problems/search-in-rotated-sorted-array
30 460 987 LFU Cache Vertical Order Traversal of a Binary Tree 34.2% 36.6% Hard Medium 0.49273850527484675 0.5046220573152461 https://leetcode.com/problems/lfu-cache https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
31 390 460 Elimination Game LFU Cache 44.5% 34.2% Medium Hard 0.487438691067837 0.49273850527484675 https://leetcode.com/problems/elimination-game https://leetcode.com/problems/lfu-cache
32 20 390 Valid Parentheses Elimination Game 39.0% 44.5% Easy Medium 0.4867693607438125 0.487438691067837 https://leetcode.com/problems/valid-parentheses https://leetcode.com/problems/elimination-game
33 3 20 Longest Substring Without Repeating Characters Valid Parentheses 30.4% 39.0% Medium Easy 0.48411466774638867 0.4867693607438125 https://leetcode.com/problems/longest-substring-without-repeating-characters https://leetcode.com/problems/valid-parentheses
34 139 3 Word Break Longest Substring Without Repeating Characters 40.1% 30.4% Medium Medium 0.4760457233294034 0.48411466774638867 https://leetcode.com/problems/word-break https://leetcode.com/problems/longest-substring-without-repeating-characters
35 399 139 Evaluate Division Word Break 51.6% 40.1% Medium Medium 0.46497633645538805 0.4760457233294034 https://leetcode.com/problems/evaluate-division https://leetcode.com/problems/word-break
36 314 399 Binary Tree Vertical Order Traversal Evaluate Division 45.3% 51.6% Medium Medium 0.4380937008921841 0.46497633645538805 https://leetcode.com/problems/binary-tree-vertical-order-traversal https://leetcode.com/problems/evaluate-division
37 1472 314 Design Browser History Binary Tree Vertical Order Traversal 64.6% 45.3% Medium Medium 0.41985384556026395 0.4380937008921841 https://leetcode.com/problems/design-browser-history https://leetcode.com/problems/binary-tree-vertical-order-traversal
38 488 1472 Zuma Game Design Browser History 39.9% 64.6% Hard Medium 0.3999856423435388 0.41985384556026395 https://leetcode.com/problems/zuma-game https://leetcode.com/problems/design-browser-history
39 269 488 Alien Dictionary Zuma Game 33.3% 39.9% Hard Hard 0.379287301768956 0.3999856423435388 https://leetcode.com/problems/alien-dictionary https://leetcode.com/problems/zuma-game
40 114 269 Flatten Binary Tree to Linked List Alien Dictionary 49.3% 33.3% Medium Hard 0.3666595336863693 0.379287301768956 https://leetcode.com/problems/flatten-binary-tree-to-linked-list https://leetcode.com/problems/alien-dictionary
41 692 114 Top K Frequent Words Flatten Binary Tree to Linked List 51.8% 49.3% Medium Medium 0.35372832097636575 0.3666595336863693 https://leetcode.com/problems/top-k-frequent-words https://leetcode.com/problems/flatten-binary-tree-to-linked-list
42 12 692 Integer to Roman Top K Frequent Words 55.1% 51.8% Medium Medium 0.35057238514000694 0.35372832097636575 https://leetcode.com/problems/integer-to-roman https://leetcode.com/problems/top-k-frequent-words
43 554 12 Brick Wall Integer to Roman 50.0% 55.1% Medium Medium 0.34539039007242767 0.35057238514000694 https://leetcode.com/problems/brick-wall https://leetcode.com/problems/integer-to-roman
44 301 554 Remove Invalid Parentheses Brick Wall 43.3% 50.0% Hard Medium 0.3106405420076888 0.34539039007242767 https://leetcode.com/problems/remove-invalid-parentheses https://leetcode.com/problems/brick-wall
45 797 301 All Paths From Source to Target Remove Invalid Parentheses 77.9% 43.3% Medium Hard 0.3046654057632776 0.3106405420076888 https://leetcode.com/problems/all-paths-from-source-to-target https://leetcode.com/problems/remove-invalid-parentheses
46 283 797 Move Zeroes All Paths From Source to Target 57.8% 77.9% Easy Medium 0.27654976037504925 0.3046654057632776 https://leetcode.com/problems/move-zeroes https://leetcode.com/problems/all-paths-from-source-to-target
47 105 283 Construct Binary Tree from Preorder and Inorder Traversal Move Zeroes 48.8% 57.8% Medium Easy 0.2757228816736699 0.27654976037504925 https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal https://leetcode.com/problems/move-zeroes
48 422 105 Valid Word Square Construct Binary Tree from Preorder and Inorder Traversal 37.7% 48.8% Easy Medium 0.2578291093020998 0.2757228816736699 https://leetcode.com/problems/valid-word-square https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
49 23 422 Merge k Sorted Lists Valid Word Square 40.2% 37.7% Hard Easy 0.2572061238898046 0.2578291093020998 https://leetcode.com/problems/merge-k-sorted-lists https://leetcode.com/problems/valid-word-square
50 662 23 Maximum Width of Binary Tree Merge k Sorted Lists 41.0% 40.2% Medium Hard 0.23997959968856164 0.2572061238898046 https://leetcode.com/problems/maximum-width-of-binary-tree https://leetcode.com/problems/merge-k-sorted-lists
51 15 662 3Sum Maximum Width of Binary Tree 26.8% 41.0% Medium Medium 0.23615702163919466 0.23997959968856164 https://leetcode.com/problems/3sum https://leetcode.com/problems/maximum-width-of-binary-tree
52 79 15 Word Search 3Sum 35.6% 26.8% Medium Medium 0.23137350418457728 0.23615702163919466 https://leetcode.com/problems/word-search https://leetcode.com/problems/3sum
53 10 79 Regular Expression Matching Word Search 26.8% 35.6% Hard Medium 0.23083119919105394 0.23137350418457728 https://leetcode.com/problems/regular-expression-matching https://leetcode.com/problems/word-search
54 21 10 Merge Two Sorted Lists Regular Expression Matching 53.5% 26.8% Easy Hard 0.22227395167049366 0.23083119919105394 https://leetcode.com/problems/merge-two-sorted-lists https://leetcode.com/problems/regular-expression-matching
55 1223 21 Dice Roll Simulation Merge Two Sorted Lists 45.6% 53.5% Medium Easy 0.2166710368085923 0.22227395167049366 https://leetcode.com/problems/dice-roll-simulation https://leetcode.com/problems/merge-two-sorted-lists
56 5 1223 Longest Palindromic Substring Dice Roll Simulation 29.5% 45.6% Medium Medium 0.20554421123878217 0.2166710368085923 https://leetcode.com/problems/longest-palindromic-substring https://leetcode.com/problems/dice-roll-simulation
57 463 5 Island Perimeter Longest Palindromic Substring 65.7% 29.5% Easy Medium 0.20102047685235075 0.20554421123878217 https://leetcode.com/problems/island-perimeter https://leetcode.com/problems/longest-palindromic-substring
58 214 463 Shortest Palindrome Island Perimeter 29.8% 65.7% Hard Easy 0.19671029424605424 0.20102047685235075 https://leetcode.com/problems/shortest-palindrome https://leetcode.com/problems/island-perimeter
59 173 214 Binary Search Tree Iterator Shortest Palindrome 56.6% 29.8% Medium Hard 0.1932027494363769 0.19671029424605424 https://leetcode.com/problems/binary-search-tree-iterator https://leetcode.com/problems/shortest-palindrome
60 1047 173 Remove All Adjacent Duplicates In String Binary Search Tree Iterator 68.6% 56.6% Easy Medium 0.19088376654809422 0.1932027494363769 https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string https://leetcode.com/problems/binary-search-tree-iterator
61 658 1047 Find K Closest Elements Remove All Adjacent Duplicates In String 40.9% 68.6% Medium Easy 0.18663941293482042 0.19088376654809422 https://leetcode.com/problems/find-k-closest-elements https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
62 199 658 Binary Tree Right Side View Find K Closest Elements 54.1% 40.9% Medium Medium 0.18661020557359304 0.18663941293482042 https://leetcode.com/problems/binary-tree-right-side-view https://leetcode.com/problems/find-k-closest-elements
63 140 199 Word Break II Binary Tree Right Side View 32.6% 54.1% Hard Medium 0.17885934906548379 0.18661020557359304 https://leetcode.com/problems/word-break-ii https://leetcode.com/problems/binary-tree-right-side-view
64 1244 140 Design A Leaderboard Word Break II 60.7% 32.6% Medium Hard 0.17763094743610072 0.17885934906548379 https://leetcode.com/problems/design-a-leaderboard https://leetcode.com/problems/word-break-ii
65 328 1244 Odd Even Linked List Design A Leaderboard 55.7% 60.7% Medium Medium 0.17548836529558792 0.17763094743610072 https://leetcode.com/problems/odd-even-linked-list https://leetcode.com/problems/design-a-leaderboard
66 384 328 Shuffle an Array Odd Even Linked List 52.8% 55.7% Medium Medium 0.17247686769050424 0.17548836529558792 https://leetcode.com/problems/shuffle-an-array https://leetcode.com/problems/odd-even-linked-list
67 971 384 Flip Binary Tree To Match Preorder Traversal Shuffle an Array 45.7% 52.8% Medium Medium 0.1670540846631662 0.17247686769050424 https://leetcode.com/problems/flip-binary-tree-to-match-preorder-traversal https://leetcode.com/problems/shuffle-an-array
68 53 971 Maximum Subarray Flip Binary Tree To Match Preorder Traversal 46.5% 45.7% Easy Medium 0.16188416901715558 0.1670540846631662 https://leetcode.com/problems/maximum-subarray https://leetcode.com/problems/flip-binary-tree-to-match-preorder-traversal
69 443 53 String Compression Maximum Subarray 41.3% 46.5% Easy Easy 0.15834355808729428 0.16188416901715558 https://leetcode.com/problems/string-compression https://leetcode.com/problems/maximum-subarray
70 322 443 Coin Change String Compression 35.5% 41.3% Medium Easy 0.1575195768933631 0.15834355808729428 https://leetcode.com/problems/coin-change https://leetcode.com/problems/string-compression
71 332 322 Reconstruct Itinerary Coin Change 36.7% 35.5% Medium Medium 0.15671959735502852 0.1575195768933631 https://leetcode.com/problems/reconstruct-itinerary https://leetcode.com/problems/coin-change
72 72 332 Edit Distance Reconstruct Itinerary 44.8% 36.7% Hard Medium 0.14935692774322157 0.15671959735502852 https://leetcode.com/problems/edit-distance https://leetcode.com/problems/reconstruct-itinerary
73 41 72 First Missing Positive Edit Distance 32.0% 44.8% Hard Hard 0.14910731703527175 0.14935692774322157 https://leetcode.com/problems/first-missing-positive https://leetcode.com/problems/edit-distance
74 273 41 Integer to English Words First Missing Positive 27.1% 32.0% Hard Hard 0.13879705494759292 0.14910731703527175 https://leetcode.com/problems/integer-to-english-words https://leetcode.com/problems/first-missing-positive
75 128 273 Longest Consecutive Sequence Integer to English Words 45.1% 27.1% Hard Hard 0.13583040733187832 0.13879705494759292 https://leetcode.com/problems/longest-consecutive-sequence https://leetcode.com/problems/integer-to-english-words
76 49 128 Group Anagrams Longest Consecutive Sequence 56.9% 45.1% Medium Hard 0.1285763065181971 0.13583040733187832 https://leetcode.com/problems/group-anagrams https://leetcode.com/problems/longest-consecutive-sequence
77 118 49 Pascal's Triangle Group Anagrams 52.5% 56.9% Easy Medium 0.12852395589356347 0.1285763065181971 https://leetcode.com/problems/pascals-triangle https://leetcode.com/problems/group-anagrams
78 121 118 Best Time to Buy and Sell Stock Pascal's Triangle 50.5% 52.5% Easy Easy 0.1275803229646801 0.12852395589356347 https://leetcode.com/problems/best-time-to-buy-and-sell-stock https://leetcode.com/problems/pascals-triangle
79 694 121 Number of Distinct Islands Best Time to Buy and Sell Stock 56.0% 50.5% Medium Easy 0.12516314295400602 0.1275803229646801 https://leetcode.com/problems/number-of-distinct-islands https://leetcode.com/problems/best-time-to-buy-and-sell-stock
80 92 694 Reverse Linked List II Number of Distinct Islands 38.8% 56.0% Medium Medium 0.12080664535613118 0.12516314295400602 https://leetcode.com/problems/reverse-linked-list-ii https://leetcode.com/problems/number-of-distinct-islands
81 88 92 Merge Sorted Array Reverse Linked List II 39.4% 38.8% Easy Medium 0.11989115268466984 0.12080664535613118 https://leetcode.com/problems/merge-sorted-array https://leetcode.com/problems/reverse-linked-list-ii
82 239 88 Sliding Window Maximum Merge Sorted Array 43.0% 39.4% Hard Easy 0.11945579213218108 0.11989115268466984 https://leetcode.com/problems/sliding-window-maximum https://leetcode.com/problems/merge-sorted-array
83 739 239 Daily Temperatures Sliding Window Maximum 63.3% 43.0% Medium Hard 0.11646575243222568 0.11945579213218108 https://leetcode.com/problems/daily-temperatures https://leetcode.com/problems/sliding-window-maximum
84 127 739 Word Ladder Daily Temperatures 29.6% 63.3% Medium Medium 0.11461293205885352 0.11646575243222568 https://leetcode.com/problems/word-ladder https://leetcode.com/problems/daily-temperatures
85 229 127 Majority Element II Word Ladder 35.6% 29.6% Medium Medium 0.11355198202632807 0.11461293205885352 https://leetcode.com/problems/majority-element-ii https://leetcode.com/problems/word-ladder
86 120 229 Triangle Majority Element II 44.2% 35.6% Medium Medium 0.11325730177515365 0.11355198202632807 https://leetcode.com/problems/triangle https://leetcode.com/problems/majority-element-ii
87 1188 120 Design Bounded Blocking Queue Triangle 70.5% 44.2% Medium Medium 0.11030454201470608 0.11325730177515365 https://leetcode.com/problems/design-bounded-blocking-queue https://leetcode.com/problems/triangle
88 695 1188 Max Area of Island Design Bounded Blocking Queue 62.7% 70.5% Medium Medium 0.10876995385464024 0.11030454201470608 https://leetcode.com/problems/max-area-of-island https://leetcode.com/problems/design-bounded-blocking-queue
89 924 695 Minimize Malware Spread Max Area of Island 42.0% 62.7% Hard Medium 0.10821358464023274 0.10876995385464024 https://leetcode.com/problems/minimize-malware-spread https://leetcode.com/problems/max-area-of-island
90 889 924 Construct Binary Tree from Preorder and Postorder Traversal Minimize Malware Spread 66.2% 42.0% Medium Hard 0.10711776476069794 0.10821358464023274 https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal https://leetcode.com/problems/minimize-malware-spread
91 311 889 Sparse Matrix Multiplication Construct Binary Tree from Preorder and Postorder Traversal 61.9% 66.2% Medium Medium 0.10648348040245009 0.10711776476069794 https://leetcode.com/problems/sparse-matrix-multiplication https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
92 759 311 Employee Free Time Sparse Matrix Multiplication 66.3% 61.9% Hard Medium 0.10623186692973738 0.10648348040245009 https://leetcode.com/problems/employee-free-time https://leetcode.com/problems/sparse-matrix-multiplication
93 78 759 Subsets Employee Free Time 62.0% 66.3% Medium Hard 0.10594222506883655 0.10623186692973738 https://leetcode.com/problems/subsets https://leetcode.com/problems/employee-free-time
94 346 78 Moving Average from Data Stream Subsets 70.9% 62.0% Easy Medium 0.10562785959739482 0.10594222506883655 https://leetcode.com/problems/moving-average-from-data-stream https://leetcode.com/problems/subsets
95 102 346 Binary Tree Level Order Traversal Moving Average from Data Stream 54.6% 70.9% Medium Easy 0.10461287933893608 0.10562785959739482 https://leetcode.com/problems/binary-tree-level-order-traversal https://leetcode.com/problems/moving-average-from-data-stream
96 1060 102 Missing Element in Sorted Array Binary Tree Level Order Traversal 54.5% 54.6% Medium Medium 0.1042610103244094 0.10461287933893608 https://leetcode.com/problems/missing-element-in-sorted-array https://leetcode.com/problems/binary-tree-level-order-traversal
97 69 1060 Sqrt(x) Missing Element in Sorted Array 33.9% 54.5% Easy Medium 0.09855995053811686 0.1042610103244094 https://leetcode.com/problems/sqrtx https://leetcode.com/problems/missing-element-in-sorted-array
98 90 69 Subsets II Sqrt(x) 47.1% 33.9% Medium Easy 0.09830555874512009 0.09855995053811686 https://leetcode.com/problems/subsets-ii https://leetcode.com/problems/sqrtx
99 84 90 Largest Rectangle in Histogram Subsets II 35.2% 47.1% Hard Medium 0.09762873497741681 0.09830555874512009 https://leetcode.com/problems/largest-rectangle-in-histogram https://leetcode.com/problems/subsets-ii
100 529 84 Minesweeper Largest Rectangle in Histogram 59.1% 35.2% Medium Hard 0.09695424100489167 0.09762873497741681 https://leetcode.com/problems/minesweeper https://leetcode.com/problems/largest-rectangle-in-histogram
101 716 529 Max Stack Minesweeper 42.6% 59.1% Easy Medium 0.09362342046209744 0.09695424100489167 https://leetcode.com/problems/max-stack https://leetcode.com/problems/minesweeper
102 836 716 Rectangle Overlap Max Stack 48.6% 42.6% Easy Easy 0.09358079943969791 0.09362342046209744 https://leetcode.com/problems/rectangle-overlap https://leetcode.com/problems/max-stack
103 4 836 Median of Two Sorted Arrays Rectangle Overlap 29.6% 48.6% Hard Easy 0.09321199094445486 0.09358079943969791 https://leetcode.com/problems/median-of-two-sorted-arrays https://leetcode.com/problems/rectangle-overlap
104 727 4 Minimum Window Subsequence Median of Two Sorted Arrays 41.8% 29.6% Hard Hard 0.09294611250944432 0.09321199094445486 https://leetcode.com/problems/minimum-window-subsequence https://leetcode.com/problems/median-of-two-sorted-arrays
105 510 727 Inorder Successor in BST II Minimum Window Subsequence 58.0% 41.8% Medium Hard 0.09244453252200126 0.09294611250944432 https://leetcode.com/problems/inorder-successor-in-bst-ii https://leetcode.com/problems/minimum-window-subsequence
106 535 510 Encode and Decode TinyURL Inorder Successor in BST II 79.9% 58.0% Medium Medium 0.09208956510428265 0.09244453252200126 https://leetcode.com/problems/encode-and-decode-tinyurl https://leetcode.com/problems/inorder-successor-in-bst-ii
107 236 535 Lowest Common Ancestor of a Binary Tree Encode and Decode TinyURL 45.7% 79.9% Medium Medium 0.0913825929084002 0.09208956510428265 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree https://leetcode.com/problems/encode-and-decode-tinyurl
108 652 236 Find Duplicate Subtrees Lowest Common Ancestor of a Binary Tree 50.2% 45.7% Medium Medium 0.08907963005368878 0.0913825929084002 https://leetcode.com/problems/find-duplicate-subtrees https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
109 7 652 Reverse Integer Find Duplicate Subtrees 25.8% 50.2% Easy Medium 0.08735674450872549 0.08907963005368878 https://leetcode.com/problems/reverse-integer https://leetcode.com/problems/find-duplicate-subtrees
110 109 7 Convert Sorted List to Binary Search Tree Reverse Integer 47.7% 25.8% Medium Easy 0.08701137698962977 0.08735674450872549 https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree https://leetcode.com/problems/reverse-integer
111 221 109 Maximal Square Convert Sorted List to Binary Search Tree 37.7% 47.7% Medium Medium 0.08564432277809672 0.08701137698962977 https://leetcode.com/problems/maximal-square https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
112 991 221 Broken Calculator Maximal Square 45.6% 37.7% Medium Medium 0.08515780834030685 0.08564432277809672 https://leetcode.com/problems/broken-calculator https://leetcode.com/problems/maximal-square
113 22 991 Generate Parentheses Broken Calculator 62.7% 45.6% Medium Medium 0.08480542001364956 0.08515780834030685 https://leetcode.com/problems/generate-parentheses https://leetcode.com/problems/broken-calculator
114 857 22 Minimum Cost to Hire K Workers Generate Parentheses 49.6% 62.7% Hard Medium 0.08320805808821628 0.08480542001364956 https://leetcode.com/problems/minimum-cost-to-hire-k-workers https://leetcode.com/problems/generate-parentheses
115 46 857 Permutations Minimum Cost to Hire K Workers 63.5% 49.6% Medium Hard 0.08209632149618187 0.08320805808821628 https://leetcode.com/problems/permutations https://leetcode.com/problems/minimum-cost-to-hire-k-workers
116 813 46 Largest Sum of Averages Permutations 49.9% 63.5% Medium Medium 0.08201315166083516 0.08209632149618187 https://leetcode.com/problems/largest-sum-of-averages https://leetcode.com/problems/permutations
117 737 813 Sentence Similarity II Largest Sum of Averages 45.8% 49.9% Medium Medium 0.08167803101426718 0.08201315166083516 https://leetcode.com/problems/sentence-similarity-ii https://leetcode.com/problems/largest-sum-of-averages
118 496 737 Next Greater Element I Sentence Similarity II 63.8% 45.8% Easy Medium 0.07978711661783192 0.08167803101426718 https://leetcode.com/problems/next-greater-element-i https://leetcode.com/problems/sentence-similarity-ii
119 250 496 Count Univalue Subtrees Next Greater Element I 52.0% 63.8% Medium Easy 0.07975881838845024 0.07978711661783192 https://leetcode.com/problems/count-univalue-subtrees https://leetcode.com/problems/next-greater-element-i
120 295 250 Find Median from Data Stream Count Univalue Subtrees 44.3% 52.0% Hard Medium 0.07821574644502474 0.07975881838845024 https://leetcode.com/problems/find-median-from-data-stream https://leetcode.com/problems/count-univalue-subtrees
121 54 295 Spiral Matrix Find Median from Data Stream 34.1% 44.3% Medium Hard 0.07792846120043545 0.07821574644502474 https://leetcode.com/problems/spiral-matrix https://leetcode.com/problems/find-median-from-data-stream
122 1297 54 Maximum Number of Occurrences of a Substring Spiral Matrix 47.3% 34.1% Medium Medium 0.07770898432731625 0.07792846120043545 https://leetcode.com/problems/maximum-number-of-occurrences-of-a-substring https://leetcode.com/problems/spiral-matrix
123 1347 1297 Minimum Number of Steps to Make Two Strings Anagram Maximum Number of Occurrences of a Substring 74.7% 47.3% Medium Medium 0.07742472477971579 0.07770898432731625 https://leetcode.com/problems/minimum-number-of-steps-to-make-two-strings-anagram https://leetcode.com/problems/maximum-number-of-occurrences-of-a-substring
124 518 1347 Coin Change 2 Minimum Number of Steps to Make Two Strings Anagram 50.2% 74.7% Medium Medium 0.07583984694698977 0.07742472477971579 https://leetcode.com/problems/coin-change-2 https://leetcode.com/problems/minimum-number-of-steps-to-make-two-strings-anagram
125 8 518 String to Integer (atoi) Coin Change 2 15.4% 50.2% Medium Medium 0.07412832776627384 0.07583984694698977 https://leetcode.com/problems/string-to-integer-atoi https://leetcode.com/problems/coin-change-2
126 76 8 Minimum Window Substring String to Integer (atoi) 34.6% 15.4% Hard Medium 0.07378420845373558 0.07412832776627384 https://leetcode.com/problems/minimum-window-substring https://leetcode.com/problems/string-to-integer-atoi
127 503 76 Next Greater Element II Minimum Window Substring 56.5% 34.6% Medium Hard 0.07339377143296942 0.07378420845373558 https://leetcode.com/problems/next-greater-element-ii https://leetcode.com/problems/minimum-window-substring
128 9 503 Palindrome Number Next Greater Element II 48.4% 56.5% Easy Medium 0.07330899176233006 0.07339377143296942 https://leetcode.com/problems/palindrome-number https://leetcode.com/problems/next-greater-element-ii
129 209 9 Minimum Size Subarray Sum Palindrome Number 38.2% 48.4% Medium Easy 0.07329286546547308 0.07330899176233006 https://leetcode.com/problems/minimum-size-subarray-sum https://leetcode.com/problems/palindrome-number
130 271 209 Encode and Decode Strings Minimum Size Subarray Sum 31.5% 38.2% Medium Medium 0.07197349962508924 0.07329286546547308 https://leetcode.com/problems/encode-and-decode-strings https://leetcode.com/problems/minimum-size-subarray-sum
131 470 271 Implement Rand10() Using Rand7() Encode and Decode Strings 46.3% 31.5% Medium Medium 0.07020425867324853 0.07197349962508924 https://leetcode.com/problems/implement-rand10-using-rand7 https://leetcode.com/problems/encode-and-decode-strings
132 432 470 All O`one Data Structure Implement Rand10() Using Rand7() 32.4% 46.3% Hard Medium 0.06887402901251127 0.07020425867324853 https://leetcode.com/problems/all-oone-data-structure https://leetcode.com/problems/implement-rand10-using-rand7
133 504 432 Base 7 All O`one Data Structure 46.2% 32.4% Easy Hard 0.06759329113252818 0.06887402901251127 https://leetcode.com/problems/base-7 https://leetcode.com/problems/all-oone-data-structure
134 560 504 Subarray Sum Equals K Base 7 43.9% 46.2% Medium Easy 0.06636621624059272 0.06759329113252818 https://leetcode.com/problems/subarray-sum-equals-k https://leetcode.com/problems/base-7
135 1145 560 Binary Tree Coloring Game Subarray Sum Equals K 51.2% 43.9% Medium Medium 0.06592172080482424 0.06636621624059272 https://leetcode.com/problems/binary-tree-coloring-game https://leetcode.com/problems/subarray-sum-equals-k
136 1105 1145 Filling Bookcase Shelves Binary Tree Coloring Game 58.1% 51.2% Medium Medium 0.06464285626208545 0.06592172080482424 https://leetcode.com/problems/filling-bookcase-shelves https://leetcode.com/problems/binary-tree-coloring-game
137 628 1105 Maximum Product of Three Numbers Filling Bookcase Shelves 47.1% 58.1% Easy Medium 0.06453852113757116 0.06464285626208545 https://leetcode.com/problems/maximum-product-of-three-numbers https://leetcode.com/problems/filling-bookcase-shelves
138 565 628 Array Nesting Maximum Product of Three Numbers 55.5% 47.1% Medium Easy 0.06351340572232586 0.06453852113757116 https://leetcode.com/problems/array-nesting https://leetcode.com/problems/maximum-product-of-three-numbers
139 397 565 Integer Replacement Array Nesting 32.9% 55.5% Medium Medium 0.06331227941432688 0.06351340572232586 https://leetcode.com/problems/integer-replacement https://leetcode.com/problems/array-nesting
140 413 397 Arithmetic Slices Integer Replacement 57.9% 32.9% Medium Medium 0.06286986221654821 0.06331227941432688 https://leetcode.com/problems/arithmetic-slices https://leetcode.com/problems/integer-replacement
141 353 413 Design Snake Game Arithmetic Slices 34.2% 57.9% Medium Medium 0.06053284922884233 0.06286986221654821 https://leetcode.com/problems/design-snake-game https://leetcode.com/problems/arithmetic-slices
142 153 353 Find Minimum in Rotated Sorted Array Design Snake Game 45.1% 34.2% Medium Medium 0.05846413569782837 0.06053284922884233 https://leetcode.com/problems/find-minimum-in-rotated-sorted-array https://leetcode.com/problems/design-snake-game
143 160 153 Intersection of Two Linked Lists Find Minimum in Rotated Sorted Array 40.6% 45.1% Easy Medium 0.05844735064567987 0.05846413569782837 https://leetcode.com/problems/intersection-of-two-linked-lists https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
144 417 160 Pacific Atlantic Water Flow Intersection of Two Linked Lists 41.1% 40.6% Medium Easy 0.057523844138186606 0.05844735064567987 https://leetcode.com/problems/pacific-atlantic-water-flow https://leetcode.com/problems/intersection-of-two-linked-lists
145 362 417 Design Hit Counter Pacific Atlantic Water Flow 63.7% 41.1% Medium Medium 0.05622967649867821 0.057523844138186606 https://leetcode.com/problems/design-hit-counter https://leetcode.com/problems/pacific-atlantic-water-flow
146 1249 362 Minimum Remove to Make Valid Parentheses Design Hit Counter 62.5% 63.7% Medium Medium 0.05613145611169511 0.05622967649867821 https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses https://leetcode.com/problems/design-hit-counter
147 230 1249 Kth Smallest Element in a BST Minimum Remove to Make Valid Parentheses 60.2% 62.5% Medium Medium 0.055629976214953934 0.05613145611169511 https://leetcode.com/problems/kth-smallest-element-in-a-bst https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
148 30 230 Substring with Concatenation of All Words Kth Smallest Element in a BST 25.4% 60.2% Hard Medium 0.05509349054082484 0.055629976214953934 https://leetcode.com/problems/substring-with-concatenation-of-all-words https://leetcode.com/problems/kth-smallest-element-in-a-bst
149 752 30 Open the Lock Substring with Concatenation of All Words 51.8% 25.4% Medium Hard 0.05449289949671372 0.05509349054082484 https://leetcode.com/problems/open-the-lock https://leetcode.com/problems/substring-with-concatenation-of-all-words
150 1054 752 Distant Barcodes Open the Lock 43.2% 51.8% Medium Medium 0.054435206555017046 0.05449289949671372 https://leetcode.com/problems/distant-barcodes https://leetcode.com/problems/open-the-lock
151 64 1054 Minimum Path Sum Distant Barcodes 54.5% 43.2% Medium Medium 0.05384075367843773 0.054435206555017046 https://leetcode.com/problems/minimum-path-sum https://leetcode.com/problems/distant-barcodes
152 44 64 Wildcard Matching Minimum Path Sum 24.7% 54.5% Hard Medium 0.053722215229247965 0.05384075367843773 https://leetcode.com/problems/wildcard-matching https://leetcode.com/problems/minimum-path-sum
153 426 44 Convert Binary Search Tree to Sorted Doubly Linked List Wildcard Matching 59.1% 24.7% Medium Hard 0.05368014946362379 0.053722215229247965 https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list https://leetcode.com/problems/wildcard-matching
154 63 426 Unique Paths II Convert Binary Search Tree to Sorted Doubly Linked List 34.6% 59.1% Medium Medium 0.05324937607387791 0.05368014946362379 https://leetcode.com/problems/unique-paths-ii https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
155 31 63 Next Permutation Unique Paths II 32.6% 34.6% Medium Medium 0.05265913800819017 0.05324937607387791 https://leetcode.com/problems/next-permutation https://leetcode.com/problems/unique-paths-ii
156 85 31 Maximal Rectangle Next Permutation 37.7% 32.6% Hard Medium 0.05229949940284891 0.05265913800819017 https://leetcode.com/problems/maximal-rectangle https://leetcode.com/problems/next-permutation
157 286 85 Walls and Gates Maximal Rectangle 54.5% 37.7% Medium Hard 0.05155780966485001 0.05229949940284891 https://leetcode.com/problems/walls-and-gates https://leetcode.com/problems/maximal-rectangle
158 708 286 Insert into a Sorted Circular Linked List Walls and Gates 31.6% 54.5% Medium Medium 0.05142521180743711 0.05155780966485001 https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list https://leetcode.com/problems/walls-and-gates
159 1312 708 Minimum Insertion Steps to Make a String Palindrome Insert into a Sorted Circular Linked List 58.1% 31.6% Hard Medium 0.050261834780888255 0.05142521180743711 https://leetcode.com/problems/minimum-insertion-steps-to-make-a-string-palindrome https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
160 285 1312 Inorder Successor in BST Minimum Insertion Steps to Make a String Palindrome 40.4% 58.1% Medium Hard 0.049569618859417214 0.050261834780888255 https://leetcode.com/problems/inorder-successor-in-bst https://leetcode.com/problems/minimum-insertion-steps-to-make-a-string-palindrome
161 203 285 Remove Linked List Elements Inorder Successor in BST 38.6% 40.4% Easy Medium 0.04798700179553833 0.049569618859417214 https://leetcode.com/problems/remove-linked-list-elements https://leetcode.com/problems/inorder-successor-in-bst
162 125 203 Valid Palindrome Remove Linked List Elements 36.7% 38.6% Easy Easy 0.047702249651065814 0.04798700179553833 https://leetcode.com/problems/valid-palindrome https://leetcode.com/problems/remove-linked-list-elements
163 336 125 Palindrome Pairs Valid Palindrome 33.7% 36.7% Hard Easy 0.04690191367275952 0.047702249651065814 https://leetcode.com/problems/palindrome-pairs https://leetcode.com/problems/valid-palindrome
164 556 336 Next Greater Element III Palindrome Pairs 31.7% 33.7% Medium Hard 0.04679216150675895 0.04690191367275952 https://leetcode.com/problems/next-greater-element-iii https://leetcode.com/problems/palindrome-pairs
165 543 556 Diameter of Binary Tree Next Greater Element III 48.4% 31.7% Easy Medium 0.04676784186766119 0.04679216150675895 https://leetcode.com/problems/diameter-of-binary-tree https://leetcode.com/problems/next-greater-element-iii
166 978 543 Longest Turbulent Subarray Diameter of Binary Tree 46.6% 48.4% Medium Easy 0.046737477851689815 0.04676784186766119 https://leetcode.com/problems/longest-turbulent-subarray https://leetcode.com/problems/diameter-of-binary-tree
167 206 978 Reverse Linked List Longest Turbulent Subarray 62.5% 46.6% Easy Medium 0.046346967254127305 0.046737477851689815 https://leetcode.com/problems/reverse-linked-list https://leetcode.com/problems/longest-turbulent-subarray
168 97 206 Interleaving String Reverse Linked List 31.5% 62.5% Hard Easy 0.04548535439411653 0.046346967254127305 https://leetcode.com/problems/interleaving-string https://leetcode.com/problems/reverse-linked-list
169 784 97 Letter Case Permutation Interleaving String 64.6% 31.5% Medium Hard 0.045030118720867006 0.04548535439411653 https://leetcode.com/problems/letter-case-permutation https://leetcode.com/problems/interleaving-string
170 136 784 Single Number Letter Case Permutation 65.5% 64.6% Easy Medium 0.04495454584592534 0.045030118720867006 https://leetcode.com/problems/single-number https://leetcode.com/problems/letter-case-permutation
171 341 136 Flatten Nested List Iterator Single Number 52.9% 65.5% Medium Easy 0.04440788848944038 0.04495454584592534 https://leetcode.com/problems/flatten-nested-list-iterator https://leetcode.com/problems/single-number
172 642 341 Design Search Autocomplete System Flatten Nested List Iterator 44.7% 52.9% Hard Medium 0.04334372921647208 0.04440788848944038 https://leetcode.com/problems/design-search-autocomplete-system https://leetcode.com/problems/flatten-nested-list-iterator
173 895 642 Maximum Frequency Stack Design Search Autocomplete System 60.6% 44.7% Hard Hard 0.04329680575332419 0.04334372921647208 https://leetcode.com/problems/maximum-frequency-stack https://leetcode.com/problems/design-search-autocomplete-system
174 435 895 Non-overlapping Intervals Maximum Frequency Stack 42.9% 60.6% Medium Hard 0.04325518123147988 0.04329680575332419 https://leetcode.com/problems/non-overlapping-intervals https://leetcode.com/problems/maximum-frequency-stack
175 821 435 Shortest Distance to a Character Non-overlapping Intervals 66.9% 42.9% Easy Medium 0.043110123653728516 0.04325518123147988 https://leetcode.com/problems/shortest-distance-to-a-character https://leetcode.com/problems/non-overlapping-intervals
176 1155 821 Number of Dice Rolls With Target Sum Shortest Distance to a Character 49.0% 66.9% Medium Easy 0.04204262329555109 0.043110123653728516 https://leetcode.com/problems/number-of-dice-rolls-with-target-sum https://leetcode.com/problems/shortest-distance-to-a-character
177 721 1155 Accounts Merge Number of Dice Rolls With Target Sum 48.8% 49.0% Medium Medium 0.04200337458562934 0.04204262329555109 https://leetcode.com/problems/accounts-merge https://leetcode.com/problems/number-of-dice-rolls-with-target-sum
178 787 721 Cheapest Flights Within K Stops Accounts Merge 39.3% 48.8% Medium Medium 0.04186657939278993 0.04200337458562934 https://leetcode.com/problems/cheapest-flights-within-k-stops https://leetcode.com/problems/accounts-merge
179 532 787 K-diff Pairs in an Array Cheapest Flights Within K Stops 31.6% 39.3% Easy Medium 0.041672696400568025 0.04186657939278993 https://leetcode.com/problems/k-diff-pairs-in-an-array https://leetcode.com/problems/cheapest-flights-within-k-stops
180 572 532 Subtree of Another Tree K-diff Pairs in an Array 44.1% 31.6% Easy Easy 0.041179261223646485 0.041672696400568025 https://leetcode.com/problems/subtree-of-another-tree https://leetcode.com/problems/k-diff-pairs-in-an-array
181 101 572 Symmetric Tree Subtree of Another Tree 46.8% 44.1% Easy Easy 0.04094139037736073 0.041179261223646485 https://leetcode.com/problems/symmetric-tree https://leetcode.com/problems/subtree-of-another-tree
182 292 101 Nim Game Symmetric Tree 54.9% 46.8% Easy Easy 0.03996979643236185 0.04094139037736073 https://leetcode.com/problems/nim-game https://leetcode.com/problems/symmetric-tree
183 162 292 Find Peak Element Nim Game 43.3% 54.9% Medium Easy 0.039043060072524054 0.03996979643236185 https://leetcode.com/problems/find-peak-element https://leetcode.com/problems/nim-game
184 993 162 Cousins in Binary Tree Find Peak Element 52.0% 43.3% Easy Medium 0.03876454345024432 0.039043060072524054 https://leetcode.com/problems/cousins-in-binary-tree https://leetcode.com/problems/find-peak-element
185 24 993 Swap Nodes in Pairs Cousins in Binary Tree 50.4% 52.0% Medium Easy 0.03826607060639552 0.03876454345024432 https://leetcode.com/problems/swap-nodes-in-pairs https://leetcode.com/problems/cousins-in-binary-tree
186 47 24 Permutations II Swap Nodes in Pairs 46.4% 50.4% Medium Medium 0.038145268259690404 0.03826607060639552 https://leetcode.com/problems/permutations-ii https://leetcode.com/problems/swap-nodes-in-pairs
187 270 47 Closest Binary Search Tree Value Permutations II 48.5% 46.4% Easy Medium 0.03812405784173832 0.038145268259690404 https://leetcode.com/problems/closest-binary-search-tree-value https://leetcode.com/problems/permutations-ii
188 402 270 Remove K Digits Closest Binary Search Tree Value 28.4% 48.5% Medium Easy 0.03755134565213245 0.03812405784173832 https://leetcode.com/problems/remove-k-digits https://leetcode.com/problems/closest-binary-search-tree-value
189 646 402 Maximum Length of Pair Chain Remove K Digits 51.9% 28.4% Medium Medium 0.036870535808327706 0.03755134565213245 https://leetcode.com/problems/maximum-length-of-pair-chain https://leetcode.com/problems/remove-k-digits
190 91 646 Decode Ways Maximum Length of Pair Chain 24.7% 51.9% Medium Medium 0.03673102791879485 0.036870535808327706 https://leetcode.com/problems/decode-ways https://leetcode.com/problems/maximum-length-of-pair-chain
191 673 91 Number of Longest Increasing Subsequence Decode Ways 35.7% 24.7% Medium Medium 0.036467121912812143 0.03673102791879485 https://leetcode.com/problems/number-of-longest-increasing-subsequence https://leetcode.com/problems/decode-ways
192 71 673 Simplify Path Number of Longest Increasing Subsequence 32.6% 35.7% Medium Medium 0.03622126343431837 0.036467121912812143 https://leetcode.com/problems/simplify-path https://leetcode.com/problems/number-of-longest-increasing-subsequence
193 650 71 2 Keys Keyboard Simplify Path 49.2% 32.6% Medium Medium 0.035910501305770864 0.03622126343431837 https://leetcode.com/problems/2-keys-keyboard https://leetcode.com/problems/simplify-path
194 226 650 Invert Binary Tree 2 Keys Keyboard 65.0% 49.2% Easy Medium 0.03393837323839263 0.035910501305770864 https://leetcode.com/problems/invert-binary-tree https://leetcode.com/problems/2-keys-keyboard
195 274 226 H-Index Invert Binary Tree 36.1% 65.0% Medium Easy 0.03364488914272426 0.03393837323839263 https://leetcode.com/problems/h-index https://leetcode.com/problems/invert-binary-tree
196 567 274 Permutation in String H-Index 44.4% 36.1% Medium Medium 0.033324075731591886 0.03364488914272426 https://leetcode.com/problems/permutation-in-string https://leetcode.com/problems/h-index
197 516 567 Longest Palindromic Subsequence Permutation in String 53.2% 44.4% Medium Medium 0.0332870969222259 0.033324075731591886 https://leetcode.com/problems/longest-palindromic-subsequence https://leetcode.com/problems/permutation-in-string
198 315 516 Count of Smaller Numbers After Self Longest Palindromic Subsequence 41.5% 53.2% Hard Medium 0.03200842244384717 0.0332870969222259 https://leetcode.com/problems/count-of-smaller-numbers-after-self https://leetcode.com/problems/longest-palindromic-subsequence
199 1114 315 Print in Order Count of Smaller Numbers After Self 65.7% 41.5% Easy Hard 0.0317486983145803 0.03200842244384717 https://leetcode.com/problems/print-in-order https://leetcode.com/problems/count-of-smaller-numbers-after-self
200 228 1114 Summary Ranges Print in Order 39.5% 65.7% Medium Easy 0.03157326191609021 0.0317486983145803 https://leetcode.com/problems/summary-ranges https://leetcode.com/problems/print-in-order
201 1123 228 Lowest Common Ancestor of Deepest Leaves Summary Ranges 66.8% 39.5% Medium Medium 0.03147388037973136 0.03157326191609021 https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves https://leetcode.com/problems/summary-ranges
202 222 1123 Count Complete Tree Nodes Lowest Common Ancestor of Deepest Leaves 46.8% 66.8% Medium Medium 0.031263400619043376 0.03147388037973136 https://leetcode.com/problems/count-complete-tree-nodes https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
203 557 222 Reverse Words in a String III Count Complete Tree Nodes 69.8% 46.8% Easy Medium 0.03063547953861342 0.031263400619043376 https://leetcode.com/problems/reverse-words-in-a-string-iii https://leetcode.com/problems/count-complete-tree-nodes
204 6 557 ZigZag Conversion Reverse Words in a String III 36.3% 69.8% Medium Easy 0.03049597862981453 0.03063547953861342 https://leetcode.com/problems/zigzag-conversion https://leetcode.com/problems/reverse-words-in-a-string-iii
205 415 6 Add Strings ZigZag Conversion 47.5% 36.3% Easy Medium 0.030009753867991852 0.03049597862981453 https://leetcode.com/problems/add-strings https://leetcode.com/problems/zigzag-conversion
206 329 415 Longest Increasing Path in a Matrix Add Strings 43.4% 47.5% Hard Easy 0.029902560173869868 0.030009753867991852 https://leetcode.com/problems/longest-increasing-path-in-a-matrix https://leetcode.com/problems/add-strings
207 16 329 3Sum Closest Longest Increasing Path in a Matrix 46.0% 43.4% Medium Hard 0.02976964023166436 0.029902560173869868 https://leetcode.com/problems/3sum-closest https://leetcode.com/problems/longest-increasing-path-in-a-matrix
208 347 16 Top K Frequent Elements 3Sum Closest 61.2% 46.0% Medium Medium 0.029662726238554857 0.02976964023166436 https://leetcode.com/problems/top-k-frequent-elements https://leetcode.com/problems/3sum-closest
209 303 347 Range Sum Query - Immutable Top K Frequent Elements 44.7% 61.2% Easy Medium 0.029549096691749193 0.029662726238554857 https://leetcode.com/problems/range-sum-query-immutable https://leetcode.com/problems/top-k-frequent-elements
210 846 303 Hand of Straights Range Sum Query - Immutable 54.2% 44.7% Medium Easy 0.029284669545175425 0.029549096691749193 https://leetcode.com/problems/hand-of-straights https://leetcode.com/problems/range-sum-query-immutable
211 344 846 Reverse String Hand of Straights 68.5% 54.2% Easy Medium 0.029048355159926334 0.029284669545175425 https://leetcode.com/problems/reverse-string https://leetcode.com/problems/hand-of-straights
212 82 344 Remove Duplicates from Sorted List II Reverse String 36.8% 68.5% Medium Easy 0.028950236662501776 0.029048355159926334 https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii https://leetcode.com/problems/reverse-string
213 147 82 Insertion Sort List Remove Duplicates from Sorted List II 41.1% 36.8% Medium Medium 0.028675799976666333 0.028950236662501776 https://leetcode.com/problems/insertion-sort-list https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii
214 852 147 Peak Index in a Mountain Array Insertion Sort List 71.6% 41.1% Easy Medium 0.02817087696669632 0.028675799976666333 https://leetcode.com/problems/peak-index-in-a-mountain-array https://leetcode.com/problems/insertion-sort-list
215 234 852 Palindrome Linked List Peak Index in a Mountain Array 39.3% 71.6% Easy Easy 0.028003622014534227 0.02817087696669632 https://leetcode.com/problems/palindrome-linked-list https://leetcode.com/problems/peak-index-in-a-mountain-array
216 19 234 Remove Nth Node From End of List Palindrome Linked List 35.2% 39.3% Medium Easy 0.027353171676046843 0.028003622014534227 https://leetcode.com/problems/remove-nth-node-from-end-of-list https://leetcode.com/problems/palindrome-linked-list
217 547 19 Friend Circles Remove Nth Node From End of List 58.6% 35.2% Medium Medium 0.027307522052851193 0.027353171676046843 https://leetcode.com/problems/friend-circles https://leetcode.com/problems/remove-nth-node-from-end-of-list
218 11 547 Container With Most Water Friend Circles 50.8% 58.6% Medium Medium 0.02727648457622222 0.027307522052851193 https://leetcode.com/problems/container-with-most-water https://leetcode.com/problems/friend-circles
219 437 11 Path Sum III Container With Most Water 47.2% 50.8% Medium Medium 0.02708561605844235 0.02727648457622222 https://leetcode.com/problems/path-sum-iii https://leetcode.com/problems/container-with-most-water
220 29 437 Divide Two Integers Path Sum III 16.4% 47.2% Medium Medium 0.026820246545985277 0.02708561605844235 https://leetcode.com/problems/divide-two-integers https://leetcode.com/problems/path-sum-iii
221 205 29 Isomorphic Strings Divide Two Integers 39.8% 16.4% Easy Medium 0.025789394882914186 0.026820246545985277 https://leetcode.com/problems/isomorphic-strings https://leetcode.com/problems/divide-two-integers
222 123 205 Best Time to Buy and Sell Stock III Isomorphic Strings 37.5% 39.8% Hard Easy 0.02516207671950806 0.025789394882914186 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii https://leetcode.com/problems/isomorphic-strings
223 733 123 Flood Fill Best Time to Buy and Sell Stock III 55.3% 37.5% Easy Hard 0.02506396866321625 0.02516207671950806 https://leetcode.com/problems/flood-fill https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
224 149 733 Max Points on a Line Flood Fill 16.9% 55.3% Hard Easy 0.02484599858653081 0.02506396866321625 https://leetcode.com/problems/max-points-on-a-line https://leetcode.com/problems/flood-fill
225 202 149 Happy Number Max Points on a Line 50.4% 16.9% Easy Hard 0.02483442856330386 0.02484599858653081 https://leetcode.com/problems/happy-number https://leetcode.com/problems/max-points-on-a-line
226 513 202 Find Bottom Left Tree Value Happy Number 61.5% 50.4% Medium Easy 0.02473842915612247 0.02483442856330386 https://leetcode.com/problems/find-bottom-left-tree-value https://leetcode.com/problems/happy-number
227 310 513 Minimum Height Trees Find Bottom Left Tree Value 32.3% 61.5% Medium Medium 0.02446605215440636 0.02473842915612247 https://leetcode.com/problems/minimum-height-trees https://leetcode.com/problems/find-bottom-left-tree-value
228 338 310 Counting Bits Minimum Height Trees 69.5% 32.3% Medium Medium 0.024325523767440974 0.02446605215440636 https://leetcode.com/problems/counting-bits https://leetcode.com/problems/minimum-height-trees
229 395 338 Longest Substring with At Least K Repeating Characters Counting Bits 41.4% 69.5% Medium Medium 0.024228925974379843 0.024325523767440974 https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters https://leetcode.com/problems/counting-bits
230 348 395 Design Tic-Tac-Toe Longest Substring with At Least K Repeating Characters 54.3% 41.4% Medium Medium 0.024214258120594613 0.024228925974379843 https://leetcode.com/problems/design-tic-tac-toe https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
231 215 348 Kth Largest Element in an Array Design Tic-Tac-Toe 55.4% 54.3% Medium Medium 0.02414409892936099 0.024214258120594613 https://leetcode.com/problems/kth-largest-element-in-an-array https://leetcode.com/problems/design-tic-tac-toe
232 252 215 Meeting Rooms Kth Largest Element in an Array 54.6% 55.4% Easy Medium 0.02332467256640893 0.02414409892936099 https://leetcode.com/problems/meeting-rooms https://leetcode.com/problems/kth-largest-element-in-an-array
233 99 252 Recover Binary Search Tree Meeting Rooms 39.7% 54.6% Hard Easy 0.02310905839365837 0.02332467256640893 https://leetcode.com/problems/recover-binary-search-tree https://leetcode.com/problems/meeting-rooms
234 678 99 Valid Parenthesis String Recover Binary Search Tree 31.0% 39.7% Medium Hard 0.02271534352147261 0.02310905839365837 https://leetcode.com/problems/valid-parenthesis-string https://leetcode.com/problems/recover-binary-search-tree
235 216 678 Combination Sum III Valid Parenthesis String 56.6% 31.0% Medium Medium 0.02261260849011709 0.02271534352147261 https://leetcode.com/problems/combination-sum-iii https://leetcode.com/problems/valid-parenthesis-string
236 108 216 Convert Sorted Array to Binary Search Tree Combination Sum III 57.9% 56.6% Easy Medium 0.022033389270751453 0.02261260849011709 https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree https://leetcode.com/problems/combination-sum-iii
237 212 108 Word Search II Convert Sorted Array to Binary Search Tree 34.9% 57.9% Hard Easy 0.02201654487096149 0.022033389270751453 https://leetcode.com/problems/word-search-ii https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
238 287 212 Find the Duplicate Number Word Search II 55.5% 34.9% Medium Hard 0.021825992579766168 0.02201654487096149 https://leetcode.com/problems/find-the-duplicate-number https://leetcode.com/problems/word-search-ii
239 112 287 Path Sum Find the Duplicate Number 41.2% 55.5% Easy Medium 0.021701651897460775 0.021825992579766168 https://leetcode.com/problems/path-sum https://leetcode.com/problems/find-the-duplicate-number
240 13 112 Roman to Integer Path Sum 55.7% 41.2% Easy Easy 0.021239435742925746 0.021701651897460775 https://leetcode.com/problems/roman-to-integer https://leetcode.com/problems/path-sum
241 359 13 Logger Rate Limiter Roman to Integer 70.8% 55.7% Easy Easy 0.021053409197832343 0.021239435742925746 https://leetcode.com/problems/logger-rate-limiter https://leetcode.com/problems/roman-to-integer
242 224 359 Basic Calculator Logger Rate Limiter 36.8% 70.8% Hard Easy 0.020965128465044926 0.021053409197832343 https://leetcode.com/problems/basic-calculator https://leetcode.com/problems/logger-rate-limiter
243 94 224 Binary Tree Inorder Traversal Basic Calculator 63.3% 36.8% Medium Hard 0.020787312070811408 0.020965128465044926 https://leetcode.com/problems/binary-tree-inorder-traversal https://leetcode.com/problems/basic-calculator
244 122 94 Best Time to Buy and Sell Stock II Binary Tree Inorder Traversal 57.0% 63.3% Easy Medium 0.020783855622427426 0.020787312070811408 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii https://leetcode.com/problems/binary-tree-inorder-traversal
245 103 122 Binary Tree Zigzag Level Order Traversal Best Time to Buy and Sell Stock II 48.3% 57.0% Medium Easy 0.020730076462920684 0.020783855622427426 https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
246 96 103 Unique Binary Search Trees Binary Tree Zigzag Level Order Traversal 52.9% 48.3% Medium Medium 0.02067613283842731 0.020730076462920684 https://leetcode.com/problems/unique-binary-search-trees https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
247 424 96 Longest Repeating Character Replacement Unique Binary Search Trees 47.0% 52.9% Medium Medium 0.020461071871340063 0.02067613283842731 https://leetcode.com/problems/longest-repeating-character-replacement https://leetcode.com/problems/unique-binary-search-trees
248 268 424 Missing Number Longest Repeating Character Replacement 51.7% 47.0% Easy Medium 0.019380451549662482 0.020461071871340063 https://leetcode.com/problems/missing-number https://leetcode.com/problems/longest-repeating-character-replacement
249 540 268 Single Element in a Sorted Array Missing Number 57.9% 51.7% Medium Easy 0.0192128868599912 0.019380451549662482 https://leetcode.com/problems/single-element-in-a-sorted-array https://leetcode.com/problems/missing-number
250 450 540 Delete Node in a BST Single Element in a Sorted Array 43.1% 57.9% Medium Medium 0.018536211907915243 0.0192128868599912 https://leetcode.com/problems/delete-node-in-a-bst https://leetcode.com/problems/single-element-in-a-sorted-array
251 35 450 Search Insert Position Delete Node in a BST 42.6% 43.1% Easy Medium 0.018459222797986813 0.018536211907915243 https://leetcode.com/problems/search-insert-position https://leetcode.com/problems/delete-node-in-a-bst
252 235 35 Lowest Common Ancestor of a Binary Search Tree Search Insert Position 49.9% 42.6% Easy Easy 0.018394142155974434 0.018459222797986813 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree https://leetcode.com/problems/search-insert-position
253 62 235 Unique Paths Lowest Common Ancestor of a Binary Search Tree 54.1% 49.9% Medium Easy 0.01835756003995383 0.018394142155974434 https://leetcode.com/problems/unique-paths https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
254 438 62 Find All Anagrams in a String Unique Paths 43.3% 54.1% Medium Medium 0.01819334596120571 0.01835756003995383 https://leetcode.com/problems/find-all-anagrams-in-a-string https://leetcode.com/problems/unique-paths
255 126 438 Word Ladder II Find All Anagrams in a String 22.1% 43.3% Hard Medium 0.017994187717865196 0.01819334596120571 https://leetcode.com/problems/word-ladder-ii https://leetcode.com/problems/find-all-anagrams-in-a-string
256 406 126 Queue Reconstruction by Height Word Ladder II 66.9% 22.1% Medium Hard 0.01774669468133533 0.017994187717865196 https://leetcode.com/problems/queue-reconstruction-by-height https://leetcode.com/problems/word-ladder-ii
257 38 406 Count and Say Queue Reconstruction by Height 44.6% 66.9% Easy Medium 0.01753063983505879 0.01774669468133533 https://leetcode.com/problems/count-and-say https://leetcode.com/problems/queue-reconstruction-by-height
258 17 38 Letter Combinations of a Phone Number Count and Say 46.8% 44.6% Medium Easy 0.017492519932499718 0.01753063983505879 https://leetcode.com/problems/letter-combinations-of-a-phone-number https://leetcode.com/problems/count-and-say
259 289 17 Game of Life Letter Combinations of a Phone Number 54.5% 46.8% Medium Medium 0.0173239499317743 0.017492519932499718 https://leetcode.com/problems/game-of-life https://leetcode.com/problems/letter-combinations-of-a-phone-number
260 240 289 Search a 2D Matrix II Game of Life 43.2% 54.5% Medium Medium 0.0169815401480941 0.0173239499317743 https://leetcode.com/problems/search-a-2d-matrix-ii https://leetcode.com/problems/game-of-life
261 863 240 All Nodes Distance K in Binary Tree Search a 2D Matrix II 55.4% 43.2% Medium Medium 0.01695674371877865 0.0169815401480941 https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree https://leetcode.com/problems/search-a-2d-matrix-ii
262 34 863 Find First and Last Position of Element in Sorted Array All Nodes Distance K in Binary Tree 36.2% 55.4% Medium Medium 0.01688338088311469 0.01695674371877865 https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
263 188 34 Best Time to Buy and Sell Stock IV Find First and Last Position of Element in Sorted Array 28.0% 36.2% Hard Medium 0.01651565203072114 0.01688338088311469 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
264 36 188 Valid Sudoku Best Time to Buy and Sell Stock IV 48.7% 28.0% Medium Hard 0.01625758350956095 0.01651565203072114 https://leetcode.com/problems/valid-sudoku https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
265 340 36 Longest Substring with At Most K Distinct Characters Valid Sudoku 44.1% 48.7% Hard Medium 0.016122880486563188 0.01625758350956095 https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters https://leetcode.com/problems/valid-sudoku
266 334 340 Increasing Triplet Subsequence Longest Substring with At Most K Distinct Characters 40.0% 44.1% Medium Hard 0.016058153168974937 0.016122880486563188 https://leetcode.com/problems/increasing-triplet-subsequence https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
267 110 334 Balanced Binary Tree Increasing Triplet Subsequence 43.5% 40.0% Easy Medium 0.015742847432510365 0.016058153168974937 https://leetcode.com/problems/balanced-binary-tree https://leetcode.com/problems/increasing-triplet-subsequence
268 28 110 Implement strStr() Balanced Binary Tree 34.5% 43.5% Easy Easy 0.01568044672076543 0.015742847432510365 https://leetcode.com/problems/implement-strstr https://leetcode.com/problems/balanced-binary-tree
269 595 28 Big Countries Implement strStr() 77.3% 34.5% Easy Easy 0.015594857957906386 0.01568044672076543 https://leetcode.com/problems/big-countries https://leetcode.com/problems/implement-strstr
270 1002 595 Find Common Characters Big Countries 67.6% 77.3% Easy Easy 0.015273301861833809 0.015594857957906386 https://leetcode.com/problems/find-common-characters https://leetcode.com/problems/big-countries
271 1025 1002 Divisor Game Find Common Characters 66.3% 67.6% Easy Easy 0.015015297119995507 0.015273301861833809 https://leetcode.com/problems/divisor-game https://leetcode.com/problems/find-common-characters
272 621 1025 Task Scheduler Divisor Game 50.1% 66.3% Medium Easy 0.014546980601820143 0.015015297119995507 https://leetcode.com/problems/task-scheduler https://leetcode.com/problems/divisor-game
273 912 621 Sort an Array Task Scheduler 63.9% 50.1% Medium Medium 0.01443026482902881 0.014546980601820143 https://leetcode.com/problems/sort-an-array https://leetcode.com/problems/task-scheduler
274 404 912 Sum of Left Leaves Sort an Array 50.9% 63.9% Easy Medium 0.013981353230340547 0.01443026482902881 https://leetcode.com/problems/sum-of-left-leaves https://leetcode.com/problems/sort-an-array
275 131 404 Palindrome Partitioning Sum of Left Leaves 47.5% 50.9% Medium Easy 0.013903595538577326 0.013981353230340547 https://leetcode.com/problems/palindrome-partitioning https://leetcode.com/problems/sum-of-left-leaves
276 703 131 Kth Largest Element in a Stream Palindrome Partitioning 49.7% 47.5% Easy Medium 0.013898764390814973 0.013903595538577326 https://leetcode.com/problems/kth-largest-element-in-a-stream https://leetcode.com/problems/palindrome-partitioning
277 724 703 Find Pivot Index Kth Largest Element in a Stream 44.0% 49.7% Easy Easy 0.013850636933899008 0.013898764390814973 https://leetcode.com/problems/find-pivot-index https://leetcode.com/problems/kth-largest-element-in-a-stream
278 581 724 Shortest Unsorted Continuous Subarray Find Pivot Index 31.1% 44.0% Easy Easy 0.013342426083839913 0.013850636933899008 https://leetcode.com/problems/shortest-unsorted-continuous-subarray https://leetcode.com/problems/find-pivot-index
279 14 581 Longest Common Prefix Shortest Unsorted Continuous Subarray 35.4% 31.1% Easy Easy 0.013215687512885701 0.013342426083839913 https://leetcode.com/problems/longest-common-prefix https://leetcode.com/problems/shortest-unsorted-continuous-subarray
280 39 14 Combination Sum Longest Common Prefix 56.1% 35.4% Medium Easy 0.012815211692867591 0.013215687512885701 https://leetcode.com/problems/combination-sum https://leetcode.com/problems/longest-common-prefix
281 219 39 Contains Duplicate II Combination Sum 37.7% 56.1% Easy Medium 0.01276748910345265 0.012815211692867591 https://leetcode.com/problems/contains-duplicate-ii https://leetcode.com/problems/combination-sum
282 129 219 Sum Root to Leaf Numbers Contains Duplicate II 49.1% 37.7% Medium Easy 0.012739025777429757 0.01276748910345265 https://leetcode.com/problems/sum-root-to-leaf-numbers https://leetcode.com/problems/contains-duplicate-ii
283 50 129 Pow(x;n) Sum Root to Leaf Numbers 30.3% 49.1% Medium Medium 0.01254502984008178 0.012739025777429757 https://leetcode.com/problems/powx-n https://leetcode.com/problems/sum-root-to-leaf-numbers
284 152 50 Maximum Product Subarray Pow(x;n) 31.7% 30.3% Medium Medium 0.012534983069696118 0.01254502984008178 https://leetcode.com/problems/maximum-product-subarray https://leetcode.com/problems/powx-n
285 124 152 Binary Tree Maximum Path Sum Maximum Product Subarray 34.3% 31.7% Hard Medium 0.012403687139326226 0.012534983069696118 https://leetcode.com/problems/binary-tree-maximum-path-sum https://leetcode.com/problems/maximum-product-subarray
286 986 124 Interval List Intersections Binary Tree Maximum Path Sum 67.3% 34.3% Medium Hard 0.011969023795320735 0.012403687139326226 https://leetcode.com/problems/interval-list-intersections https://leetcode.com/problems/binary-tree-maximum-path-sum
287 81 986 Search in Rotated Sorted Array II Interval List Intersections 33.0% 67.3% Medium Medium 0.011689203815677656 0.011969023795320735 https://leetcode.com/problems/search-in-rotated-sorted-array-ii https://leetcode.com/problems/interval-list-intersections
288 350 81 Intersection of Two Arrays II Search in Rotated Sorted Array II 51.4% 33.0% Easy Medium 0.01168540951877908 0.011689203815677656 https://leetcode.com/problems/intersection-of-two-arrays-ii https://leetcode.com/problems/search-in-rotated-sorted-array-ii
289 442 350 Find All Duplicates in an Array Intersection of Two Arrays II 67.8% 51.4% Medium Easy 0.011675555865241341 0.01168540951877908 https://leetcode.com/problems/find-all-duplicates-in-an-array https://leetcode.com/problems/intersection-of-two-arrays-ii
290 378 442 Kth Smallest Element in a Sorted Matrix Find All Duplicates in an Array 54.3% 67.8% Medium Medium 0.011634802567699611 0.011675555865241341 https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix https://leetcode.com/problems/find-all-duplicates-in-an-array
291 48 378 Rotate Image Kth Smallest Element in a Sorted Matrix 56.7% 54.3% Medium Medium 0.011428695823622754 0.011634802567699611 https://leetcode.com/problems/rotate-image https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
292 55 48 Jump Game Rotate Image 34.6% 56.7% Medium Medium 0.011265609194218986 0.011428695823622754 https://leetcode.com/problems/jump-game https://leetcode.com/problems/rotate-image
293 232 55 Implement Queue using Stacks Jump Game 49.6% 34.6% Easy Medium 0.011242389348933884 0.011265609194218986 https://leetcode.com/problems/implement-queue-using-stacks https://leetcode.com/problems/jump-game
294 171 232 Excel Sheet Column Number Implement Queue using Stacks 55.9% 49.6% Easy Easy 0.011195191092491645 0.011242389348933884 https://leetcode.com/problems/excel-sheet-column-number https://leetcode.com/problems/implement-queue-using-stacks
295 207 171 Course Schedule Excel Sheet Column Number 43.1% 55.9% Medium Easy 0.01113459480911671 0.011195191092491645 https://leetcode.com/problems/course-schedule https://leetcode.com/problems/excel-sheet-column-number
296 957 207 Prison Cells After N Days Course Schedule 40.7% 43.1% Medium Medium 0.010986103354595014 0.01113459480911671 https://leetcode.com/problems/prison-cells-after-n-days https://leetcode.com/problems/course-schedule
297 559 957 Maximum Depth of N-ary Tree Prison Cells After N Days 68.7% 40.7% Easy Medium 0.010974047031976715 0.010986103354595014 https://leetcode.com/problems/maximum-depth-of-n-ary-tree https://leetcode.com/problems/prison-cells-after-n-days
298 414 559 Third Maximum Number Maximum Depth of N-ary Tree 30.5% 68.7% Easy Easy 0.010357420400453607 0.010974047031976715 https://leetcode.com/problems/third-maximum-number https://leetcode.com/problems/maximum-depth-of-n-ary-tree
299 61 414 Rotate List Third Maximum Number 30.0% 30.5% Medium Easy 0.009925639799969955 0.010357420400453607 https://leetcode.com/problems/rotate-list https://leetcode.com/problems/third-maximum-number
300 18 61 4Sum Rotate List 33.7% 30.0% Medium Medium 0.00984259914419414 0.009925639799969955 https://leetcode.com/problems/4sum https://leetcode.com/problems/rotate-list
301 746 18 Min Cost Climbing Stairs 4Sum 50.3% 33.7% Easy Medium 0.009818439209289494 0.00984259914419414 https://leetcode.com/problems/min-cost-climbing-stairs https://leetcode.com/problems/4sum
302 40 746 Combination Sum II Min Cost Climbing Stairs 48.2% 50.3% Medium Easy 0.009578617297069781 0.009818439209289494 https://leetcode.com/problems/combination-sum-ii https://leetcode.com/problems/min-cost-climbing-stairs
303 70 40 Climbing Stairs Combination Sum II 47.8% 48.2% Easy Medium 0.009390798483527519 0.009578617297069781 https://leetcode.com/problems/climbing-stairs https://leetcode.com/problems/combination-sum-ii
304 74 70 Search a 2D Matrix Climbing Stairs 36.5% 47.8% Medium Easy 0.00934149716911291 0.009390798483527519 https://leetcode.com/problems/search-a-2d-matrix https://leetcode.com/problems/climbing-stairs
305 32 74 Longest Valid Parentheses Search a 2D Matrix 28.4% 36.5% Hard Medium 0.009111680351255843 0.00934149716911291 https://leetcode.com/problems/longest-valid-parentheses https://leetcode.com/problems/search-a-2d-matrix
306 208 32 Implement Trie (Prefix Tree) Longest Valid Parentheses 49.4% 28.4% Medium Hard 0.009105457856626612 0.009111680351255843 https://leetcode.com/problems/implement-trie-prefix-tree https://leetcode.com/problems/longest-valid-parentheses
307 392 208 Is Subsequence Implement Trie (Prefix Tree) 49.2% 49.4% Easy Medium 0.009088906012344746 0.009105457856626612 https://leetcode.com/problems/is-subsequence https://leetcode.com/problems/implement-trie-prefix-tree
308 189 392 Rotate Array Is Subsequence 34.7% 49.2% Easy Easy 0.00904437880665999 0.009088906012344746 https://leetcode.com/problems/rotate-array https://leetcode.com/problems/is-subsequence
309 238 189 Product of Array Except Self Rotate Array 60.1% 34.7% Medium Easy 0.008821856860216758 0.00904437880665999 https://leetcode.com/problems/product-of-array-except-self https://leetcode.com/problems/rotate-array
310 198 238 House Robber Product of Array Except Self 42.0% 60.1% Easy Medium 0.008434914115059812 0.008821856860216758 https://leetcode.com/problems/house-robber https://leetcode.com/problems/product-of-array-except-self
311 617 198 Merge Two Binary Trees House Robber 74.1% 42.0% Easy Easy 0.008262802639833214 0.008434914115059812 https://leetcode.com/problems/merge-two-binary-trees https://leetcode.com/problems/house-robber
312 176 617 Second Highest Salary Merge Two Binary Trees 31.6% 74.1% Easy Easy 0.007393749024938284 0.008262802639833214 https://leetcode.com/problems/second-highest-salary https://leetcode.com/problems/merge-two-binary-trees
313 349 176 Intersection of Two Arrays Second Highest Salary 62.5% 31.6% Easy Easy 0.00725034896230682 0.007393749024938284 https://leetcode.com/problems/intersection-of-two-arrays https://leetcode.com/problems/second-highest-salary
314 412 349 Fizz Buzz Intersection of Two Arrays 62.3% 62.5% Easy Easy 0.007165921026143679 0.00725034896230682 https://leetcode.com/problems/fizz-buzz https://leetcode.com/problems/intersection-of-two-arrays
315 204 412 Count Primes Fizz Buzz 31.5% 62.3% Easy Easy 0.007072165261362441 0.007165921026143679 https://leetcode.com/problems/count-primes https://leetcode.com/problems/fizz-buzz
316 448 204 Find All Numbers Disappeared in an Array Count Primes 55.9% 31.5% Easy Easy 0.006863444924982415 0.007072165261362441 https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array https://leetcode.com/problems/count-primes
317 104 448 Maximum Depth of Binary Tree Find All Numbers Disappeared in an Array 66.0% 55.9% Easy Easy 0.006261761223976207 0.006863444924982415 https://leetcode.com/problems/maximum-depth-of-binary-tree https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array
318 151 104 Reverse Words in a String Maximum Depth of Binary Tree 21.9% 66.0% Medium Easy 0.0061359296669270605 0.006261761223976207 https://leetcode.com/problems/reverse-words-in-a-string https://leetcode.com/problems/maximum-depth-of-binary-tree
319 144 151 Binary Tree Preorder Traversal Reverse Words in a String 55.7% 21.9% Medium Medium 0.0060975798681185 0.0061359296669270605 https://leetcode.com/problems/binary-tree-preorder-traversal https://leetcode.com/problems/reverse-words-in-a-string
320 167 144 Two Sum II - Input array is sorted Binary Tree Preorder Traversal 54.1% 55.7% Easy Medium 0.005507380022589096 0.0060975798681185 https://leetcode.com/problems/two-sum-ii-input-array-is-sorted https://leetcode.com/problems/binary-tree-preorder-traversal
321 278 167 First Bad Version Two Sum II - Input array is sorted 35.7% 54.1% Easy Easy 0.005391575265790431 0.005507380022589096 https://leetcode.com/problems/first-bad-version https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
322 106 278 Construct Binary Tree from Inorder and Postorder Traversal First Bad Version 47.2% 35.7% Medium Easy 0.005258250021550252 0.005391575265790431 https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal https://leetcode.com/problems/first-bad-version
323 237 106 Delete Node in a Linked List Construct Binary Tree from Inorder and Postorder Traversal 63.8% 47.2% Easy Medium 0.005144705881237697 0.005258250021550252 https://leetcode.com/problems/delete-node-in-a-linked-list https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
324 75 237 Sort Colors Delete Node in a Linked List 47.3% 63.8% Medium Easy 0.004992521603120986 0.005144705881237697 https://leetcode.com/problems/sort-colors https://leetcode.com/problems/delete-node-in-a-linked-list
325 258 75 Add Digits Sort Colors 57.6% 47.3% Easy Medium 0.004648528591812259 0.004992521603120986 https://leetcode.com/problems/add-digits https://leetcode.com/problems/sort-colors
326 26 258 Remove Duplicates from Sorted Array Add Digits 45.1% 57.6% Easy Easy 0.004385117141850828 0.004648528591812259 https://leetcode.com/problems/remove-duplicates-from-sorted-array https://leetcode.com/problems/add-digits
327 210 26 Course Schedule II Remove Duplicates from Sorted Array 40.7% 45.1% Medium Easy 0.0042893974831731225 0.004385117141850828 https://leetcode.com/problems/course-schedule-ii https://leetcode.com/problems/remove-duplicates-from-sorted-array
328 977 210 Squares of a Sorted Array Course Schedule II 72.1% 40.7% Easy Medium 0.003891055492966611 0.0042893974831731225 https://leetcode.com/problems/squares-of-a-sorted-array https://leetcode.com/problems/course-schedule-ii
329 217 977 Contains Duplicate Squares of a Sorted Array 56.0% 72.1% Easy Easy 0.0037979536727587773 0.003891055492966611 https://leetcode.com/problems/contains-duplicate https://leetcode.com/problems/squares-of-a-sorted-array
330 27 217 Remove Element Contains Duplicate 48.2% 56.0% Easy Easy 0.0035524016043678225 0.0037979536727587773 https://leetcode.com/problems/remove-element https://leetcode.com/problems/contains-duplicate
331 66 27 Plus One Remove Element 43.0% 48.2% Easy Easy 0.00326211347832938 0.0035524016043678225 https://leetcode.com/problems/plus-one https://leetcode.com/problems/remove-element
332 100 66 Same Tree Plus One 53.4% 43.0% Easy Easy 0.003165227373565798 0.00326211347832938 https://leetcode.com/problems/same-tree https://leetcode.com/problems/plus-one
333 1480 100 Running Sum of 1d Array Same Tree 90.5% 53.4% Easy Easy 0.0026196884456014947 0.003165227373565798 https://leetcode.com/problems/running-sum-of-1d-array https://leetcode.com/problems/same-tree
334 1480 Running Sum of 1d Array 90.5% Easy 0.0026196884456014947 https://leetcode.com/problems/running-sum-of-1d-array