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