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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
Download Patch File Download Diff File Expand all files Collapse all files

259
linkedin_2year.csv
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@@ -1,129 +1,130 @@
364,Nested List Weight Sum II,62.8%,Medium,3.4314026516185074, https://leetcode.com/problems/nested-list-weight-sum-ii
244,Shortest Word Distance II,52.3%,Medium,3.3074402860776226, https://leetcode.com/problems/shortest-word-distance-ii
272,Closest Binary Search Tree Value II,50.5%,Hard,3.009985507576158, https://leetcode.com/problems/closest-binary-search-tree-value-ii
716,Max Stack,42.6%,Easy,2.8905651319656047, https://leetcode.com/problems/max-stack
366,Find Leaves of Binary Tree,70.6%,Medium,2.719366575451067, https://leetcode.com/problems/find-leaves-of-binary-tree
170,Two Sum III - Data structure design,33.5%,Easy,2.4219117969496025, https://leetcode.com/problems/two-sum-iii-data-structure-design
432,All O`one Data Structure,32.4%,Hard,2.34464696026554, https://leetcode.com/problems/all-oone-data-structure
605,Can Place Flowers,31.6%,Easy,2.300593060462805, https://leetcode.com/problems/can-place-flowers
339,Nested List Weight Sum,74.0%,Easy,2.217225244042889, https://leetcode.com/problems/nested-list-weight-sum
254,Factor Combinations,46.7%,Medium,2.157039260360306, https://leetcode.com/problems/factor-combinations
156,Binary Tree Upside Down,55.0%,Medium,1.9388429818322208, https://leetcode.com/problems/binary-tree-upside-down
243,Shortest Word Distance,61.0%,Easy,1.6413882033307563, https://leetcode.com/problems/shortest-word-distance
150,Evaluate Reverse Polish Notation,36.3%,Medium,1.631958216745279, https://leetcode.com/problems/evaluate-reverse-polish-notation
256,Paint House,52.1%,Easy,1.447627449136699, https://leetcode.com/problems/paint-house
68,Text Justification,27.7%,Hard,1.2612363282688142, https://leetcode.com/problems/text-justification
149,Max Points on a Line,16.9%,Hard,1.0358890301947536, https://leetcode.com/problems/max-points-on-a-line
698,Partition to K Equal Sum Subsets,45.0%,Medium,1.0032310331325633, https://leetcode.com/problems/partition-to-k-equal-sum-subsets
730,Count Different Palindromic Subsequences,41.8%,Hard,1.0003738490846965, https://leetcode.com/problems/count-different-palindromic-subsequences
65,Valid Number,15.3%,Hard,0.98227329658396, https://leetcode.com/problems/valid-number
671,Second Minimum Node In a Binary Tree,42.7%,Easy,0.904813710696626, https://leetcode.com/problems/second-minimum-node-in-a-binary-tree
380,Insert Delete GetRandom O(1),47.5%,Medium,0.8842506895781851, https://leetcode.com/problems/insert-delete-getrandom-o1
265,Paint House II,44.6%,Hard,0.8788156207076087, https://leetcode.com/problems/paint-house-ii
297,Serialize and Deserialize Binary Tree,47.5%,Hard,0.7885864842588262, https://leetcode.com/problems/serialize-and-deserialize-binary-tree
373,Find K Pairs with Smallest Sums,36.7%,Medium,0.7534978029618075, https://leetcode.com/problems/find-k-pairs-with-smallest-sums
235,Lowest Common Ancestor of a Binary Search Tree,49.9%,Easy,0.6923217574837778, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
261,Graph Valid Tree,42.2%,Medium,0.661701044953794, https://leetcode.com/problems/graph-valid-tree
76,Minimum Window Substring,34.6%,Hard,0.641927908156958, https://leetcode.com/problems/minimum-window-substring
611,Valid Triangle Number,48.4%,Medium,0.6315030174487386, https://leetcode.com/problems/valid-triangle-number
205,Isomorphic Strings,39.8%,Easy,0.6091659093074805, https://leetcode.com/problems/isomorphic-strings
152,Maximum Product Subarray,31.7%,Medium,0.5918273884045084, https://leetcode.com/problems/maximum-product-subarray
341,Flatten Nested List Iterator,52.9%,Medium,0.5461187395622055, https://leetcode.com/problems/flatten-nested-list-iterator
53,Maximum Subarray,46.5%,Easy,0.5323304442417232, https://leetcode.com/problems/maximum-subarray
57,Insert Interval,33.5%,Hard,0.4990029568338001, https://leetcode.com/problems/insert-interval
636,Exclusive Time of Functions,51.9%,Medium,0.49627524402791723, https://leetcode.com/problems/exclusive-time-of-functions
277,Find the Celebrity,41.8%,Medium,0.47648222098694015, https://leetcode.com/problems/find-the-celebrity
127,Word Ladder,29.6%,Medium,0.46981620538612967, https://leetcode.com/problems/word-ladder
72,Edit Distance,44.8%,Hard,0.4487306287546189, https://leetcode.com/problems/edit-distance
1117,Building H2O,52.6%,Medium,0.43571951646596674, https://leetcode.com/problems/building-h2o
706,Design HashMap,61.3%,Easy,0.3660911265048934, https://leetcode.com/problems/design-hashmap
715,Range Module,38.5%,Hard,0.33647223662121295, https://leetcode.com/problems/range-module
20,Valid Parentheses,39.0%,Easy,0.32875969157833257, https://leetcode.com/problems/valid-parentheses
56,Merge Intervals,39.3%,Medium,0.324649020144345, https://leetcode.com/problems/merge-intervals
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,0.32407608535777543, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
200,Number of Islands,46.8%,Medium,0.3240548843543058, https://leetcode.com/problems/number-of-islands
381,Insert Delete GetRandom O(1) - Duplicates allowed,34.1%,Hard,0.32306557634109756, https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed
273,Integer to English Words,27.1%,Hard,0.3131081243495928, https://leetcode.com/problems/integer-to-english-words
879,Profitable Schemes,39.8%,Hard,0.2856138193877219, https://leetcode.com/problems/profitable-schemes
102,Binary Tree Level Order Traversal,54.6%,Medium,0.28444131830888175, https://leetcode.com/problems/binary-tree-level-order-traversal
47,Permutations II,46.4%,Medium,0.2577738774664557, https://leetcode.com/problems/permutations-ii
470,Implement Rand10() Using Rand7(),46.3%,Medium,0.2553466918088445, https://leetcode.com/problems/implement-rand10-using-rand7
460,LFU Cache,34.2%,Hard,0.24921579162398486, https://leetcode.com/problems/lfu-cache
215,Kth Largest Element in an Array,55.4%,Medium,0.24881320355240788, https://leetcode.com/problems/kth-largest-element-in-an-array
655,Print Binary Tree,55.0%,Medium,0.23545681154756673, https://leetcode.com/problems/print-binary-tree
1188,Design Bounded Blocking Queue,70.5%,Medium,0.23300728083654992, https://leetcode.com/problems/design-bounded-blocking-queue
464,Can I Win,28.8%,Medium,0.2228314901476892, https://leetcode.com/problems/can-i-win
516,Longest Palindromic Subsequence,53.2%,Medium,0.2156692799855616, https://leetcode.com/problems/longest-palindromic-subsequence
33,Search in Rotated Sorted Array,34.5%,Medium,0.21005273947217698, https://leetcode.com/problems/search-in-rotated-sorted-array
46,Permutations,63.5%,Medium,0.18816690901782251, https://leetcode.com/problems/permutations
449,Serialize and Deserialize BST,52.0%,Medium,0.1860058460684763, https://leetcode.com/problems/serialize-and-deserialize-bst
547,Friend Circles,58.6%,Medium,0.17970355268064825, https://leetcode.com/problems/friend-circles
739,Daily Temperatures,63.3%,Medium,0.14956674442158685, https://leetcode.com/problems/daily-temperatures
34,Find First and Last Position of Element in Sorted Array,36.2%,Medium,0.14257571553993023, https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
428,Serialize and Deserialize N-ary Tree,59.4%,Hard,0.13313574474596881, https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
367,Valid Perfect Square,41.7%,Easy,0.1274707680128316, https://leetcode.com/problems/valid-perfect-square
50,Pow(x;n),30.3%,Medium,0.11919639741435266, https://leetcode.com/problems/powx-n
101,Symmetric Tree,46.8%,Easy,0.11583847861592966, https://leetcode.com/problems/symmetric-tree
61,Rotate List,30.0%,Medium,0.11528615545779625, https://leetcode.com/problems/rotate-list
721,Accounts Merge,48.8%,Medium,0.11257939199174459, https://leetcode.com/problems/accounts-merge
296,Best Meeting Point,57.5%,Hard,0.11216225709564905, https://leetcode.com/problems/best-meeting-point
349,Intersection of Two Arrays,62.5%,Easy,0.11013353452843663, https://leetcode.com/problems/intersection-of-two-arrays
126,Word Ladder II,22.1%,Hard,0.10749169745614619, https://leetcode.com/problems/word-ladder-ii
1028,Recover a Tree From Preorder Traversal,69.9%,Hard,0.10734155493596446, https://leetcode.com/problems/recover-a-tree-from-preorder-traversal
744,Find Smallest Letter Greater Than Target,45.4%,Easy,0.10446541455492596, https://leetcode.com/problems/find-smallest-letter-greater-than-target
796,Rotate String,49.6%,Easy,0.10392210998497661, https://leetcode.com/problems/rotate-string
12,Integer to Roman,55.1%,Medium,0.09981819303484349, https://leetcode.com/problems/integer-to-roman
69,Sqrt(x),33.9%,Easy,0.09855995053811686, https://leetcode.com/problems/sqrtx
104,Maximum Depth of Binary Tree,66.0%,Easy,0.09576690509200843, https://leetcode.com/problems/maximum-depth-of-binary-tree
1,Two Sum,45.6%,Easy,0.08664530282302181, https://leetcode.com/problems/two-sum
322,Coin Change,35.5%,Medium,0.07859731751631634, https://leetcode.com/problems/coin-change
160,Intersection of Two Linked Lists,40.6%,Easy,0.07567727378601781, https://leetcode.com/problems/intersection-of-two-linked-lists
88,Merge Sorted Array,39.4%,Easy,0.0726641464118391, https://leetcode.com/problems/merge-sorted-array
1042,Flower Planting With No Adjacent,48.5%,Easy,0.07249550203815351, https://leetcode.com/problems/flower-planting-with-no-adjacent
450,Delete Node in a BST,43.1%,Medium,0.07216836682371046, https://leetcode.com/problems/delete-node-in-a-bst
1148,Article Views I,75.8%,Easy,0.0715869066639981, https://leetcode.com/problems/article-views-i
187,Repeated DNA Sequences,38.9%,Medium,0.06947237281476738, https://leetcode.com/problems/repeated-dna-sequences
323,Number of Connected Components in an Undirected Graph,56.0%,Medium,0.06931179989022884, https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph
528,Random Pick with Weight,43.9%,Medium,0.05805039128849884, https://leetcode.com/problems/random-pick-with-weight
13,Roman to Integer,55.7%,Easy,0.05349762932680746, https://leetcode.com/problems/roman-to-integer
451,Sort Characters By Frequency,63.0%,Medium,0.05160771036247213, https://leetcode.com/problems/sort-characters-by-frequency
39,Combination Sum,56.1%,Medium,0.05030398316850793, https://leetcode.com/problems/combination-sum
412,Fizz Buzz,62.3%,Easy,0.04396698989626337, https://leetcode.com/problems/fizz-buzz
146,LRU Cache,33.2%,Medium,0.040660598211268925, https://leetcode.com/problems/lru-cache
833,Find And Replace in String,50.4%,Medium,0.03984590854719967, https://leetcode.com/problems/find-and-replace-in-string
40,Combination Sum II,48.2%,Medium,0.037775974158907266, https://leetcode.com/problems/combination-sum-ii
23,Merge k Sorted Lists,40.2%,Hard,0.035885441255624394, https://leetcode.com/problems/merge-k-sorted-lists
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.03403976010989293, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
8,String to Integer (atoi),15.4%,Medium,0.03362603162985522, https://leetcode.com/problems/string-to-integer-atoi
173,Binary Search Tree Iterator,56.6%,Medium,0.03353206029057467, https://leetcode.com/problems/binary-search-tree-iterator
75,Sort Colors,47.3%,Medium,0.030801991570373215, https://leetcode.com/problems/sort-colors
362,Design Hit Counter,63.7%,Medium,0.025382073271417165, https://leetcode.com/problems/design-hit-counter
785,Is Graph Bipartite?,47.5%,Medium,0.02510592113107633, https://leetcode.com/problems/is-graph-bipartite
981,Time Based Key-Value Store,53.1%,Medium,0.02226024024151985, https://leetcode.com/problems/time-based-key-value-store
359,Logger Rate Limiter,70.8%,Easy,0.021053409197832343, https://leetcode.com/problems/logger-rate-limiter
350,Intersection of Two Arrays II,51.4%,Easy,0.020680587107206983, https://leetcode.com/problems/intersection-of-two-arrays-ii
270,Closest Binary Search Tree Value,48.5%,Easy,0.017123706078591462, https://leetcode.com/problems/closest-binary-search-tree-value
384,Shuffle an Array,52.8%,Medium,0.015250009609723824, https://leetcode.com/problems/shuffle-an-array
54,Spiral Matrix,34.1%,Medium,0.014776167707688753, https://leetcode.com/problems/spiral-matrix
973,K Closest Points to Origin,63.8%,Medium,0.012944233661064114, https://leetcode.com/problems/k-closest-points-to-origin
987,Vertical Order Traversal of a Binary Tree,36.6%,Medium,0.011601058182762062, https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
207,Course Schedule,43.1%,Medium,0.01113459480911671, https://leetcode.com/problems/course-schedule
113,Path Sum II,46.7%,Medium,0.009784813879998279, https://leetcode.com/problems/path-sum-ii
279,Perfect Squares,47.4%,Medium,0.009216655104924008, https://leetcode.com/problems/perfect-squares
198,House Robber,42.0%,Easy,0.008434914115059812, https://leetcode.com/problems/house-robber
133,Clone Graph,34.8%,Medium,0.008136741393061732, https://leetcode.com/problems/clone-graph
141,Linked List Cycle,41.1%,Easy,0.007843861028908454, https://leetcode.com/problems/linked-list-cycle
240,Search a 2D Matrix II,43.2%,Medium,0.0075829747244553335, https://leetcode.com/problems/search-a-2d-matrix-ii
692,Top K Frequent Words,51.8%,Medium,0.007516006820935329, https://leetcode.com/problems/top-k-frequent-words
142,Linked List Cycle II,37.3%,Medium,0.006564934131150057, https://leetcode.com/problems/linked-list-cycle-ii
21,Merge Two Sorted Lists,53.5%,Easy,0.005067007800877041, https://leetcode.com/problems/merge-two-sorted-lists
155,Min Stack,44.5%,Easy,0.00474891074128171, https://leetcode.com/problems/min-stack
560,Subarray Sum Equals K,43.9%,Medium,0.004279454482267064, https://leetcode.com/problems/subarray-sum-equals-k
387,First Unique Character in a String,53.4%,Easy,0.00418541994270691, https://leetcode.com/problems/first-unique-character-in-a-string
125,Valid Palindrome,36.7%,Easy,0.0039805008274065926, https://leetcode.com/problems/valid-palindrome
100,Same Tree,53.4%,Easy,0.003165227373565798, https://leetcode.com/problems/same-tree
98,Validate Binary Search Tree,27.8%,Medium,0.002943776044013381, https://leetcode.com/problems/validate-binary-search-tree
121,Best Time to Buy and Sell Stock,50.5%,Easy,0.0021239321954525975, https://leetcode.com/problems/best-time-to-buy-and-sell-stock
79,Word Search,35.6%,Medium,0.0016647248725526849, https://leetcode.com/problems/word-search
70,Climbing Stairs,47.8%,Easy,0.0015084665529624085, https://leetcode.com/problems/climbing-stairs
347,Top K Frequent Elements,61.2%,Medium,0.0014856636219477439, https://leetcode.com/problems/top-k-frequent-elements
ID,Title,Acceptance,Difficulty,Frequency,Leetcode Question Link
364,Nested List Weight Sum II,62.8%,Medium,3.4314026516185074, https://leetcode.com/problems/nested-list-weight-sum-ii
244,Shortest Word Distance II,52.3%,Medium,3.3074402860776226, https://leetcode.com/problems/shortest-word-distance-ii
272,Closest Binary Search Tree Value II,50.5%,Hard,3.009985507576158, https://leetcode.com/problems/closest-binary-search-tree-value-ii
716,Max Stack,42.6%,Easy,2.8905651319656047, https://leetcode.com/problems/max-stack
366,Find Leaves of Binary Tree,70.6%,Medium,2.719366575451067, https://leetcode.com/problems/find-leaves-of-binary-tree
170,Two Sum III - Data structure design,33.5%,Easy,2.4219117969496025, https://leetcode.com/problems/two-sum-iii-data-structure-design
432,All O`one Data Structure,32.4%,Hard,2.34464696026554, https://leetcode.com/problems/all-oone-data-structure
605,Can Place Flowers,31.6%,Easy,2.300593060462805, https://leetcode.com/problems/can-place-flowers
339,Nested List Weight Sum,74.0%,Easy,2.217225244042889, https://leetcode.com/problems/nested-list-weight-sum
254,Factor Combinations,46.7%,Medium,2.157039260360306, https://leetcode.com/problems/factor-combinations
156,Binary Tree Upside Down,55.0%,Medium,1.9388429818322208, https://leetcode.com/problems/binary-tree-upside-down
243,Shortest Word Distance,61.0%,Easy,1.6413882033307563, https://leetcode.com/problems/shortest-word-distance
150,Evaluate Reverse Polish Notation,36.3%,Medium,1.631958216745279, https://leetcode.com/problems/evaluate-reverse-polish-notation
256,Paint House,52.1%,Easy,1.447627449136699, https://leetcode.com/problems/paint-house
68,Text Justification,27.7%,Hard,1.2612363282688142, https://leetcode.com/problems/text-justification
149,Max Points on a Line,16.9%,Hard,1.0358890301947536, https://leetcode.com/problems/max-points-on-a-line
698,Partition to K Equal Sum Subsets,45.0%,Medium,1.0032310331325633, https://leetcode.com/problems/partition-to-k-equal-sum-subsets
730,Count Different Palindromic Subsequences,41.8%,Hard,1.0003738490846965, https://leetcode.com/problems/count-different-palindromic-subsequences
65,Valid Number,15.3%,Hard,0.98227329658396, https://leetcode.com/problems/valid-number
671,Second Minimum Node In a Binary Tree,42.7%,Easy,0.904813710696626, https://leetcode.com/problems/second-minimum-node-in-a-binary-tree
380,Insert Delete GetRandom O(1),47.5%,Medium,0.8842506895781851, https://leetcode.com/problems/insert-delete-getrandom-o1
265,Paint House II,44.6%,Hard,0.8788156207076087, https://leetcode.com/problems/paint-house-ii
297,Serialize and Deserialize Binary Tree,47.5%,Hard,0.7885864842588262, https://leetcode.com/problems/serialize-and-deserialize-binary-tree
373,Find K Pairs with Smallest Sums,36.7%,Medium,0.7534978029618075, https://leetcode.com/problems/find-k-pairs-with-smallest-sums
235,Lowest Common Ancestor of a Binary Search Tree,49.9%,Easy,0.6923217574837778, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
261,Graph Valid Tree,42.2%,Medium,0.661701044953794, https://leetcode.com/problems/graph-valid-tree
76,Minimum Window Substring,34.6%,Hard,0.641927908156958, https://leetcode.com/problems/minimum-window-substring
611,Valid Triangle Number,48.4%,Medium,0.6315030174487386, https://leetcode.com/problems/valid-triangle-number
205,Isomorphic Strings,39.8%,Easy,0.6091659093074805, https://leetcode.com/problems/isomorphic-strings
152,Maximum Product Subarray,31.7%,Medium,0.5918273884045084, https://leetcode.com/problems/maximum-product-subarray
341,Flatten Nested List Iterator,52.9%,Medium,0.5461187395622055, https://leetcode.com/problems/flatten-nested-list-iterator
53,Maximum Subarray,46.5%,Easy,0.5323304442417232, https://leetcode.com/problems/maximum-subarray
57,Insert Interval,33.5%,Hard,0.4990029568338001, https://leetcode.com/problems/insert-interval
636,Exclusive Time of Functions,51.9%,Medium,0.49627524402791723, https://leetcode.com/problems/exclusive-time-of-functions
277,Find the Celebrity,41.8%,Medium,0.47648222098694015, https://leetcode.com/problems/find-the-celebrity
127,Word Ladder,29.6%,Medium,0.46981620538612967, https://leetcode.com/problems/word-ladder
72,Edit Distance,44.8%,Hard,0.4487306287546189, https://leetcode.com/problems/edit-distance
1117,Building H2O,52.6%,Medium,0.43571951646596674, https://leetcode.com/problems/building-h2o
706,Design HashMap,61.3%,Easy,0.3660911265048934, https://leetcode.com/problems/design-hashmap
715,Range Module,38.5%,Hard,0.33647223662121295, https://leetcode.com/problems/range-module
20,Valid Parentheses,39.0%,Easy,0.32875969157833257, https://leetcode.com/problems/valid-parentheses
56,Merge Intervals,39.3%,Medium,0.324649020144345, https://leetcode.com/problems/merge-intervals
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,0.32407608535777543, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
200,Number of Islands,46.8%,Medium,0.3240548843543058, https://leetcode.com/problems/number-of-islands
381,Insert Delete GetRandom O(1) - Duplicates allowed,34.1%,Hard,0.32306557634109756, https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed
273,Integer to English Words,27.1%,Hard,0.3131081243495928, https://leetcode.com/problems/integer-to-english-words
879,Profitable Schemes,39.8%,Hard,0.2856138193877219, https://leetcode.com/problems/profitable-schemes
102,Binary Tree Level Order Traversal,54.6%,Medium,0.28444131830888175, https://leetcode.com/problems/binary-tree-level-order-traversal
47,Permutations II,46.4%,Medium,0.2577738774664557, https://leetcode.com/problems/permutations-ii
470,Implement Rand10() Using Rand7(),46.3%,Medium,0.2553466918088445, https://leetcode.com/problems/implement-rand10-using-rand7
460,LFU Cache,34.2%,Hard,0.24921579162398486, https://leetcode.com/problems/lfu-cache
215,Kth Largest Element in an Array,55.4%,Medium,0.24881320355240788, https://leetcode.com/problems/kth-largest-element-in-an-array
655,Print Binary Tree,55.0%,Medium,0.23545681154756673, https://leetcode.com/problems/print-binary-tree
1188,Design Bounded Blocking Queue,70.5%,Medium,0.23300728083654992, https://leetcode.com/problems/design-bounded-blocking-queue
464,Can I Win,28.8%,Medium,0.2228314901476892, https://leetcode.com/problems/can-i-win
516,Longest Palindromic Subsequence,53.2%,Medium,0.2156692799855616, https://leetcode.com/problems/longest-palindromic-subsequence
33,Search in Rotated Sorted Array,34.5%,Medium,0.21005273947217698, https://leetcode.com/problems/search-in-rotated-sorted-array
46,Permutations,63.5%,Medium,0.18816690901782251, https://leetcode.com/problems/permutations
449,Serialize and Deserialize BST,52.0%,Medium,0.1860058460684763, https://leetcode.com/problems/serialize-and-deserialize-bst
547,Friend Circles,58.6%,Medium,0.17970355268064825, https://leetcode.com/problems/friend-circles
739,Daily Temperatures,63.3%,Medium,0.14956674442158685, https://leetcode.com/problems/daily-temperatures
34,Find First and Last Position of Element in Sorted Array,36.2%,Medium,0.14257571553993023, https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
428,Serialize and Deserialize N-ary Tree,59.4%,Hard,0.13313574474596881, https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
367,Valid Perfect Square,41.7%,Easy,0.1274707680128316, https://leetcode.com/problems/valid-perfect-square
50,Pow(x;n),30.3%,Medium,0.11919639741435266, https://leetcode.com/problems/powx-n
101,Symmetric Tree,46.8%,Easy,0.11583847861592966, https://leetcode.com/problems/symmetric-tree
61,Rotate List,30.0%,Medium,0.11528615545779625, https://leetcode.com/problems/rotate-list
721,Accounts Merge,48.8%,Medium,0.11257939199174459, https://leetcode.com/problems/accounts-merge
296,Best Meeting Point,57.5%,Hard,0.11216225709564905, https://leetcode.com/problems/best-meeting-point
349,Intersection of Two Arrays,62.5%,Easy,0.11013353452843663, https://leetcode.com/problems/intersection-of-two-arrays
126,Word Ladder II,22.1%,Hard,0.10749169745614619, https://leetcode.com/problems/word-ladder-ii
1028,Recover a Tree From Preorder Traversal,69.9%,Hard,0.10734155493596446, https://leetcode.com/problems/recover-a-tree-from-preorder-traversal
744,Find Smallest Letter Greater Than Target,45.4%,Easy,0.10446541455492596, https://leetcode.com/problems/find-smallest-letter-greater-than-target
796,Rotate String,49.6%,Easy,0.10392210998497661, https://leetcode.com/problems/rotate-string
12,Integer to Roman,55.1%,Medium,0.09981819303484349, https://leetcode.com/problems/integer-to-roman
69,Sqrt(x),33.9%,Easy,0.09855995053811686, https://leetcode.com/problems/sqrtx
104,Maximum Depth of Binary Tree,66.0%,Easy,0.09576690509200843, https://leetcode.com/problems/maximum-depth-of-binary-tree
1,Two Sum,45.6%,Easy,0.08664530282302181, https://leetcode.com/problems/two-sum
322,Coin Change,35.5%,Medium,0.07859731751631634, https://leetcode.com/problems/coin-change
160,Intersection of Two Linked Lists,40.6%,Easy,0.07567727378601781, https://leetcode.com/problems/intersection-of-two-linked-lists
88,Merge Sorted Array,39.4%,Easy,0.0726641464118391, https://leetcode.com/problems/merge-sorted-array
1042,Flower Planting With No Adjacent,48.5%,Easy,0.07249550203815351, https://leetcode.com/problems/flower-planting-with-no-adjacent
450,Delete Node in a BST,43.1%,Medium,0.07216836682371046, https://leetcode.com/problems/delete-node-in-a-bst
1148,Article Views I,75.8%,Easy,0.0715869066639981, https://leetcode.com/problems/article-views-i
187,Repeated DNA Sequences,38.9%,Medium,0.06947237281476738, https://leetcode.com/problems/repeated-dna-sequences
323,Number of Connected Components in an Undirected Graph,56.0%,Medium,0.06931179989022884, https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph
528,Random Pick with Weight,43.9%,Medium,0.05805039128849884, https://leetcode.com/problems/random-pick-with-weight
13,Roman to Integer,55.7%,Easy,0.05349762932680746, https://leetcode.com/problems/roman-to-integer
451,Sort Characters By Frequency,63.0%,Medium,0.05160771036247213, https://leetcode.com/problems/sort-characters-by-frequency
39,Combination Sum,56.1%,Medium,0.05030398316850793, https://leetcode.com/problems/combination-sum
412,Fizz Buzz,62.3%,Easy,0.04396698989626337, https://leetcode.com/problems/fizz-buzz
146,LRU Cache,33.2%,Medium,0.040660598211268925, https://leetcode.com/problems/lru-cache
833,Find And Replace in String,50.4%,Medium,0.03984590854719967, https://leetcode.com/problems/find-and-replace-in-string
40,Combination Sum II,48.2%,Medium,0.037775974158907266, https://leetcode.com/problems/combination-sum-ii
23,Merge k Sorted Lists,40.2%,Hard,0.035885441255624394, https://leetcode.com/problems/merge-k-sorted-lists
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.03403976010989293, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
8,String to Integer (atoi),15.4%,Medium,0.03362603162985522, https://leetcode.com/problems/string-to-integer-atoi
173,Binary Search Tree Iterator,56.6%,Medium,0.03353206029057467, https://leetcode.com/problems/binary-search-tree-iterator
75,Sort Colors,47.3%,Medium,0.030801991570373215, https://leetcode.com/problems/sort-colors
362,Design Hit Counter,63.7%,Medium,0.025382073271417165, https://leetcode.com/problems/design-hit-counter
785,Is Graph Bipartite?,47.5%,Medium,0.02510592113107633, https://leetcode.com/problems/is-graph-bipartite
981,Time Based Key-Value Store,53.1%,Medium,0.02226024024151985, https://leetcode.com/problems/time-based-key-value-store
359,Logger Rate Limiter,70.8%,Easy,0.021053409197832343, https://leetcode.com/problems/logger-rate-limiter
350,Intersection of Two Arrays II,51.4%,Easy,0.020680587107206983, https://leetcode.com/problems/intersection-of-two-arrays-ii
270,Closest Binary Search Tree Value,48.5%,Easy,0.017123706078591462, https://leetcode.com/problems/closest-binary-search-tree-value
384,Shuffle an Array,52.8%,Medium,0.015250009609723824, https://leetcode.com/problems/shuffle-an-array
54,Spiral Matrix,34.1%,Medium,0.014776167707688753, https://leetcode.com/problems/spiral-matrix
973,K Closest Points to Origin,63.8%,Medium,0.012944233661064114, https://leetcode.com/problems/k-closest-points-to-origin
987,Vertical Order Traversal of a Binary Tree,36.6%,Medium,0.011601058182762062, https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
207,Course Schedule,43.1%,Medium,0.01113459480911671, https://leetcode.com/problems/course-schedule
113,Path Sum II,46.7%,Medium,0.009784813879998279, https://leetcode.com/problems/path-sum-ii
279,Perfect Squares,47.4%,Medium,0.009216655104924008, https://leetcode.com/problems/perfect-squares
198,House Robber,42.0%,Easy,0.008434914115059812, https://leetcode.com/problems/house-robber
133,Clone Graph,34.8%,Medium,0.008136741393061732, https://leetcode.com/problems/clone-graph
141,Linked List Cycle,41.1%,Easy,0.007843861028908454, https://leetcode.com/problems/linked-list-cycle
240,Search a 2D Matrix II,43.2%,Medium,0.0075829747244553335, https://leetcode.com/problems/search-a-2d-matrix-ii
692,Top K Frequent Words,51.8%,Medium,0.007516006820935329, https://leetcode.com/problems/top-k-frequent-words
142,Linked List Cycle II,37.3%,Medium,0.006564934131150057, https://leetcode.com/problems/linked-list-cycle-ii
21,Merge Two Sorted Lists,53.5%,Easy,0.005067007800877041, https://leetcode.com/problems/merge-two-sorted-lists
155,Min Stack,44.5%,Easy,0.00474891074128171, https://leetcode.com/problems/min-stack
560,Subarray Sum Equals K,43.9%,Medium,0.004279454482267064, https://leetcode.com/problems/subarray-sum-equals-k
387,First Unique Character in a String,53.4%,Easy,0.00418541994270691, https://leetcode.com/problems/first-unique-character-in-a-string
125,Valid Palindrome,36.7%,Easy,0.0039805008274065926, https://leetcode.com/problems/valid-palindrome
100,Same Tree,53.4%,Easy,0.003165227373565798, https://leetcode.com/problems/same-tree
98,Validate Binary Search Tree,27.8%,Medium,0.002943776044013381, https://leetcode.com/problems/validate-binary-search-tree
121,Best Time to Buy and Sell Stock,50.5%,Easy,0.0021239321954525975, https://leetcode.com/problems/best-time-to-buy-and-sell-stock
79,Word Search,35.6%,Medium,0.0016647248725526849, https://leetcode.com/problems/word-search
70,Climbing Stairs,47.8%,Easy,0.0015084665529624085, https://leetcode.com/problems/climbing-stairs
347,Top K Frequent Elements,61.2%,Medium,0.0014856636219477439, https://leetcode.com/problems/top-k-frequent-elements
1 364 ID Nested List Weight Sum II Title 62.8% Acceptance Medium Difficulty 3.4314026516185074 Frequency https://leetcode.com/problems/nested-list-weight-sum-ii Leetcode Question Link
2 244 364 Shortest Word Distance II Nested List Weight Sum II 52.3% 62.8% Medium Medium 3.3074402860776226 3.4314026516185074 https://leetcode.com/problems/shortest-word-distance-ii https://leetcode.com/problems/nested-list-weight-sum-ii
3 272 244 Closest Binary Search Tree Value II Shortest Word Distance II 50.5% 52.3% Hard Medium 3.009985507576158 3.3074402860776226 https://leetcode.com/problems/closest-binary-search-tree-value-ii https://leetcode.com/problems/shortest-word-distance-ii
4 716 272 Max Stack Closest Binary Search Tree Value II 42.6% 50.5% Easy Hard 2.8905651319656047 3.009985507576158 https://leetcode.com/problems/max-stack https://leetcode.com/problems/closest-binary-search-tree-value-ii
5 366 716 Find Leaves of Binary Tree Max Stack 70.6% 42.6% Medium Easy 2.719366575451067 2.8905651319656047 https://leetcode.com/problems/find-leaves-of-binary-tree https://leetcode.com/problems/max-stack
6 170 366 Two Sum III - Data structure design Find Leaves of Binary Tree 33.5% 70.6% Easy Medium 2.4219117969496025 2.719366575451067 https://leetcode.com/problems/two-sum-iii-data-structure-design https://leetcode.com/problems/find-leaves-of-binary-tree
7 432 170 All O`one Data Structure Two Sum III - Data structure design 32.4% 33.5% Hard Easy 2.34464696026554 2.4219117969496025 https://leetcode.com/problems/all-oone-data-structure https://leetcode.com/problems/two-sum-iii-data-structure-design
8 605 432 Can Place Flowers All O`one Data Structure 31.6% 32.4% Easy Hard 2.300593060462805 2.34464696026554 https://leetcode.com/problems/can-place-flowers https://leetcode.com/problems/all-oone-data-structure
9 339 605 Nested List Weight Sum Can Place Flowers 74.0% 31.6% Easy Easy 2.217225244042889 2.300593060462805 https://leetcode.com/problems/nested-list-weight-sum https://leetcode.com/problems/can-place-flowers
10 254 339 Factor Combinations Nested List Weight Sum 46.7% 74.0% Medium Easy 2.157039260360306 2.217225244042889 https://leetcode.com/problems/factor-combinations https://leetcode.com/problems/nested-list-weight-sum
11 156 254 Binary Tree Upside Down Factor Combinations 55.0% 46.7% Medium Medium 1.9388429818322208 2.157039260360306 https://leetcode.com/problems/binary-tree-upside-down https://leetcode.com/problems/factor-combinations
12 243 156 Shortest Word Distance Binary Tree Upside Down 61.0% 55.0% Easy Medium 1.6413882033307563 1.9388429818322208 https://leetcode.com/problems/shortest-word-distance https://leetcode.com/problems/binary-tree-upside-down
13 150 243 Evaluate Reverse Polish Notation Shortest Word Distance 36.3% 61.0% Medium Easy 1.631958216745279 1.6413882033307563 https://leetcode.com/problems/evaluate-reverse-polish-notation https://leetcode.com/problems/shortest-word-distance
14 256 150 Paint House Evaluate Reverse Polish Notation 52.1% 36.3% Easy Medium 1.447627449136699 1.631958216745279 https://leetcode.com/problems/paint-house https://leetcode.com/problems/evaluate-reverse-polish-notation
15 68 256 Text Justification Paint House 27.7% 52.1% Hard Easy 1.2612363282688142 1.447627449136699 https://leetcode.com/problems/text-justification https://leetcode.com/problems/paint-house
16 149 68 Max Points on a Line Text Justification 16.9% 27.7% Hard Hard 1.0358890301947536 1.2612363282688142 https://leetcode.com/problems/max-points-on-a-line https://leetcode.com/problems/text-justification
17 698 149 Partition to K Equal Sum Subsets Max Points on a Line 45.0% 16.9% Medium Hard 1.0032310331325633 1.0358890301947536 https://leetcode.com/problems/partition-to-k-equal-sum-subsets https://leetcode.com/problems/max-points-on-a-line
18 730 698 Count Different Palindromic Subsequences Partition to K Equal Sum Subsets 41.8% 45.0% Hard Medium 1.0003738490846965 1.0032310331325633 https://leetcode.com/problems/count-different-palindromic-subsequences https://leetcode.com/problems/partition-to-k-equal-sum-subsets
19 65 730 Valid Number Count Different Palindromic Subsequences 15.3% 41.8% Hard Hard 0.98227329658396 1.0003738490846965 https://leetcode.com/problems/valid-number https://leetcode.com/problems/count-different-palindromic-subsequences
20 671 65 Second Minimum Node In a Binary Tree Valid Number 42.7% 15.3% Easy Hard 0.904813710696626 0.98227329658396 https://leetcode.com/problems/second-minimum-node-in-a-binary-tree https://leetcode.com/problems/valid-number
21 380 671 Insert Delete GetRandom O(1) Second Minimum Node In a Binary Tree 47.5% 42.7% Medium Easy 0.8842506895781851 0.904813710696626 https://leetcode.com/problems/insert-delete-getrandom-o1 https://leetcode.com/problems/second-minimum-node-in-a-binary-tree
22 265 380 Paint House II Insert Delete GetRandom O(1) 44.6% 47.5% Hard Medium 0.8788156207076087 0.8842506895781851 https://leetcode.com/problems/paint-house-ii https://leetcode.com/problems/insert-delete-getrandom-o1
23 297 265 Serialize and Deserialize Binary Tree Paint House II 47.5% 44.6% Hard Hard 0.7885864842588262 0.8788156207076087 https://leetcode.com/problems/serialize-and-deserialize-binary-tree https://leetcode.com/problems/paint-house-ii
24 373 297 Find K Pairs with Smallest Sums Serialize and Deserialize Binary Tree 36.7% 47.5% Medium Hard 0.7534978029618075 0.7885864842588262 https://leetcode.com/problems/find-k-pairs-with-smallest-sums https://leetcode.com/problems/serialize-and-deserialize-binary-tree
25 235 373 Lowest Common Ancestor of a Binary Search Tree Find K Pairs with Smallest Sums 49.9% 36.7% Easy Medium 0.6923217574837778 0.7534978029618075 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree https://leetcode.com/problems/find-k-pairs-with-smallest-sums
26 261 235 Graph Valid Tree Lowest Common Ancestor of a Binary Search Tree 42.2% 49.9% Medium Easy 0.661701044953794 0.6923217574837778 https://leetcode.com/problems/graph-valid-tree https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
27 76 261 Minimum Window Substring Graph Valid Tree 34.6% 42.2% Hard Medium 0.641927908156958 0.661701044953794 https://leetcode.com/problems/minimum-window-substring https://leetcode.com/problems/graph-valid-tree
28 611 76 Valid Triangle Number Minimum Window Substring 48.4% 34.6% Medium Hard 0.6315030174487386 0.641927908156958 https://leetcode.com/problems/valid-triangle-number https://leetcode.com/problems/minimum-window-substring
29 205 611 Isomorphic Strings Valid Triangle Number 39.8% 48.4% Easy Medium 0.6091659093074805 0.6315030174487386 https://leetcode.com/problems/isomorphic-strings https://leetcode.com/problems/valid-triangle-number
30 152 205 Maximum Product Subarray Isomorphic Strings 31.7% 39.8% Medium Easy 0.5918273884045084 0.6091659093074805 https://leetcode.com/problems/maximum-product-subarray https://leetcode.com/problems/isomorphic-strings
31 341 152 Flatten Nested List Iterator Maximum Product Subarray 52.9% 31.7% Medium Medium 0.5461187395622055 0.5918273884045084 https://leetcode.com/problems/flatten-nested-list-iterator https://leetcode.com/problems/maximum-product-subarray
32 53 341 Maximum Subarray Flatten Nested List Iterator 46.5% 52.9% Easy Medium 0.5323304442417232 0.5461187395622055 https://leetcode.com/problems/maximum-subarray https://leetcode.com/problems/flatten-nested-list-iterator
33 57 53 Insert Interval Maximum Subarray 33.5% 46.5% Hard Easy 0.4990029568338001 0.5323304442417232 https://leetcode.com/problems/insert-interval https://leetcode.com/problems/maximum-subarray
34 636 57 Exclusive Time of Functions Insert Interval 51.9% 33.5% Medium Hard 0.49627524402791723 0.4990029568338001 https://leetcode.com/problems/exclusive-time-of-functions https://leetcode.com/problems/insert-interval
35 277 636 Find the Celebrity Exclusive Time of Functions 41.8% 51.9% Medium Medium 0.47648222098694015 0.49627524402791723 https://leetcode.com/problems/find-the-celebrity https://leetcode.com/problems/exclusive-time-of-functions
36 127 277 Word Ladder Find the Celebrity 29.6% 41.8% Medium Medium 0.46981620538612967 0.47648222098694015 https://leetcode.com/problems/word-ladder https://leetcode.com/problems/find-the-celebrity
37 72 127 Edit Distance Word Ladder 44.8% 29.6% Hard Medium 0.4487306287546189 0.46981620538612967 https://leetcode.com/problems/edit-distance https://leetcode.com/problems/word-ladder
38 1117 72 Building H2O Edit Distance 52.6% 44.8% Medium Hard 0.43571951646596674 0.4487306287546189 https://leetcode.com/problems/building-h2o https://leetcode.com/problems/edit-distance
39 706 1117 Design HashMap Building H2O 61.3% 52.6% Easy Medium 0.3660911265048934 0.43571951646596674 https://leetcode.com/problems/design-hashmap https://leetcode.com/problems/building-h2o
40 715 706 Range Module Design HashMap 38.5% 61.3% Hard Easy 0.33647223662121295 0.3660911265048934 https://leetcode.com/problems/range-module https://leetcode.com/problems/design-hashmap
41 20 715 Valid Parentheses Range Module 39.0% 38.5% Easy Hard 0.32875969157833257 0.33647223662121295 https://leetcode.com/problems/valid-parentheses https://leetcode.com/problems/range-module
42 56 20 Merge Intervals Valid Parentheses 39.3% 39.0% Medium Easy 0.324649020144345 0.32875969157833257 https://leetcode.com/problems/merge-intervals https://leetcode.com/problems/valid-parentheses
43 236 56 Lowest Common Ancestor of a Binary Tree Merge Intervals 45.7% 39.3% Medium Medium 0.32407608535777543 0.324649020144345 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree https://leetcode.com/problems/merge-intervals
44 200 236 Number of Islands Lowest Common Ancestor of a Binary Tree 46.8% 45.7% Medium Medium 0.3240548843543058 0.32407608535777543 https://leetcode.com/problems/number-of-islands https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
45 381 200 Insert Delete GetRandom O(1) - Duplicates allowed Number of Islands 34.1% 46.8% Hard Medium 0.32306557634109756 0.3240548843543058 https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed https://leetcode.com/problems/number-of-islands
46 273 381 Integer to English Words Insert Delete GetRandom O(1) - Duplicates allowed 27.1% 34.1% Hard Hard 0.3131081243495928 0.32306557634109756 https://leetcode.com/problems/integer-to-english-words https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed
47 879 273 Profitable Schemes Integer to English Words 39.8% 27.1% Hard Hard 0.2856138193877219 0.3131081243495928 https://leetcode.com/problems/profitable-schemes https://leetcode.com/problems/integer-to-english-words
48 102 879 Binary Tree Level Order Traversal Profitable Schemes 54.6% 39.8% Medium Hard 0.28444131830888175 0.2856138193877219 https://leetcode.com/problems/binary-tree-level-order-traversal https://leetcode.com/problems/profitable-schemes
49 47 102 Permutations II Binary Tree Level Order Traversal 46.4% 54.6% Medium Medium 0.2577738774664557 0.28444131830888175 https://leetcode.com/problems/permutations-ii https://leetcode.com/problems/binary-tree-level-order-traversal
50 470 47 Implement Rand10() Using Rand7() Permutations II 46.3% 46.4% Medium Medium 0.2553466918088445 0.2577738774664557 https://leetcode.com/problems/implement-rand10-using-rand7 https://leetcode.com/problems/permutations-ii
51 460 470 LFU Cache Implement Rand10() Using Rand7() 34.2% 46.3% Hard Medium 0.24921579162398486 0.2553466918088445 https://leetcode.com/problems/lfu-cache https://leetcode.com/problems/implement-rand10-using-rand7
52 215 460 Kth Largest Element in an Array LFU Cache 55.4% 34.2% Medium Hard 0.24881320355240788 0.24921579162398486 https://leetcode.com/problems/kth-largest-element-in-an-array https://leetcode.com/problems/lfu-cache
53 655 215 Print Binary Tree Kth Largest Element in an Array 55.0% 55.4% Medium Medium 0.23545681154756673 0.24881320355240788 https://leetcode.com/problems/print-binary-tree https://leetcode.com/problems/kth-largest-element-in-an-array
54 1188 655 Design Bounded Blocking Queue Print Binary Tree 70.5% 55.0% Medium Medium 0.23300728083654992 0.23545681154756673 https://leetcode.com/problems/design-bounded-blocking-queue https://leetcode.com/problems/print-binary-tree
55 464 1188 Can I Win Design Bounded Blocking Queue 28.8% 70.5% Medium Medium 0.2228314901476892 0.23300728083654992 https://leetcode.com/problems/can-i-win https://leetcode.com/problems/design-bounded-blocking-queue
56 516 464 Longest Palindromic Subsequence Can I Win 53.2% 28.8% Medium Medium 0.2156692799855616 0.2228314901476892 https://leetcode.com/problems/longest-palindromic-subsequence https://leetcode.com/problems/can-i-win
57 33 516 Search in Rotated Sorted Array Longest Palindromic Subsequence 34.5% 53.2% Medium Medium 0.21005273947217698 0.2156692799855616 https://leetcode.com/problems/search-in-rotated-sorted-array https://leetcode.com/problems/longest-palindromic-subsequence
58 46 33 Permutations Search in Rotated Sorted Array 63.5% 34.5% Medium Medium 0.18816690901782251 0.21005273947217698 https://leetcode.com/problems/permutations https://leetcode.com/problems/search-in-rotated-sorted-array
59 449 46 Serialize and Deserialize BST Permutations 52.0% 63.5% Medium Medium 0.1860058460684763 0.18816690901782251 https://leetcode.com/problems/serialize-and-deserialize-bst https://leetcode.com/problems/permutations
60 547 449 Friend Circles Serialize and Deserialize BST 58.6% 52.0% Medium Medium 0.17970355268064825 0.1860058460684763 https://leetcode.com/problems/friend-circles https://leetcode.com/problems/serialize-and-deserialize-bst
61 739 547 Daily Temperatures Friend Circles 63.3% 58.6% Medium Medium 0.14956674442158685 0.17970355268064825 https://leetcode.com/problems/daily-temperatures https://leetcode.com/problems/friend-circles
62 34 739 Find First and Last Position of Element in Sorted Array Daily Temperatures 36.2% 63.3% Medium Medium 0.14257571553993023 0.14956674442158685 https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array https://leetcode.com/problems/daily-temperatures
63 428 34 Serialize and Deserialize N-ary Tree Find First and Last Position of Element in Sorted Array 59.4% 36.2% Hard Medium 0.13313574474596881 0.14257571553993023 https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
64 367 428 Valid Perfect Square Serialize and Deserialize N-ary Tree 41.7% 59.4% Easy Hard 0.1274707680128316 0.13313574474596881 https://leetcode.com/problems/valid-perfect-square https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
65 50 367 Pow(x;n) Valid Perfect Square 30.3% 41.7% Medium Easy 0.11919639741435266 0.1274707680128316 https://leetcode.com/problems/powx-n https://leetcode.com/problems/valid-perfect-square
66 101 50 Symmetric Tree Pow(x;n) 46.8% 30.3% Easy Medium 0.11583847861592966 0.11919639741435266 https://leetcode.com/problems/symmetric-tree https://leetcode.com/problems/powx-n
67 61 101 Rotate List Symmetric Tree 30.0% 46.8% Medium Easy 0.11528615545779625 0.11583847861592966 https://leetcode.com/problems/rotate-list https://leetcode.com/problems/symmetric-tree
68 721 61 Accounts Merge Rotate List 48.8% 30.0% Medium Medium 0.11257939199174459 0.11528615545779625 https://leetcode.com/problems/accounts-merge https://leetcode.com/problems/rotate-list
69 296 721 Best Meeting Point Accounts Merge 57.5% 48.8% Hard Medium 0.11216225709564905 0.11257939199174459 https://leetcode.com/problems/best-meeting-point https://leetcode.com/problems/accounts-merge
70 349 296 Intersection of Two Arrays Best Meeting Point 62.5% 57.5% Easy Hard 0.11013353452843663 0.11216225709564905 https://leetcode.com/problems/intersection-of-two-arrays https://leetcode.com/problems/best-meeting-point
71 126 349 Word Ladder II Intersection of Two Arrays 22.1% 62.5% Hard Easy 0.10749169745614619 0.11013353452843663 https://leetcode.com/problems/word-ladder-ii https://leetcode.com/problems/intersection-of-two-arrays
72 1028 126 Recover a Tree From Preorder Traversal Word Ladder II 69.9% 22.1% Hard Hard 0.10734155493596446 0.10749169745614619 https://leetcode.com/problems/recover-a-tree-from-preorder-traversal https://leetcode.com/problems/word-ladder-ii
73 744 1028 Find Smallest Letter Greater Than Target Recover a Tree From Preorder Traversal 45.4% 69.9% Easy Hard 0.10446541455492596 0.10734155493596446 https://leetcode.com/problems/find-smallest-letter-greater-than-target https://leetcode.com/problems/recover-a-tree-from-preorder-traversal
74 796 744 Rotate String Find Smallest Letter Greater Than Target 49.6% 45.4% Easy Easy 0.10392210998497661 0.10446541455492596 https://leetcode.com/problems/rotate-string https://leetcode.com/problems/find-smallest-letter-greater-than-target
75 12 796 Integer to Roman Rotate String 55.1% 49.6% Medium Easy 0.09981819303484349 0.10392210998497661 https://leetcode.com/problems/integer-to-roman https://leetcode.com/problems/rotate-string
76 69 12 Sqrt(x) Integer to Roman 33.9% 55.1% Easy Medium 0.09855995053811686 0.09981819303484349 https://leetcode.com/problems/sqrtx https://leetcode.com/problems/integer-to-roman
77 104 69 Maximum Depth of Binary Tree Sqrt(x) 66.0% 33.9% Easy Easy 0.09576690509200843 0.09855995053811686 https://leetcode.com/problems/maximum-depth-of-binary-tree https://leetcode.com/problems/sqrtx
78 1 104 Two Sum Maximum Depth of Binary Tree 45.6% 66.0% Easy Easy 0.08664530282302181 0.09576690509200843 https://leetcode.com/problems/two-sum https://leetcode.com/problems/maximum-depth-of-binary-tree
79 322 1 Coin Change Two Sum 35.5% 45.6% Medium Easy 0.07859731751631634 0.08664530282302181 https://leetcode.com/problems/coin-change https://leetcode.com/problems/two-sum
80 160 322 Intersection of Two Linked Lists Coin Change 40.6% 35.5% Easy Medium 0.07567727378601781 0.07859731751631634 https://leetcode.com/problems/intersection-of-two-linked-lists https://leetcode.com/problems/coin-change
81 88 160 Merge Sorted Array Intersection of Two Linked Lists 39.4% 40.6% Easy Easy 0.0726641464118391 0.07567727378601781 https://leetcode.com/problems/merge-sorted-array https://leetcode.com/problems/intersection-of-two-linked-lists
82 1042 88 Flower Planting With No Adjacent Merge Sorted Array 48.5% 39.4% Easy Easy 0.07249550203815351 0.0726641464118391 https://leetcode.com/problems/flower-planting-with-no-adjacent https://leetcode.com/problems/merge-sorted-array
83 450 1042 Delete Node in a BST Flower Planting With No Adjacent 43.1% 48.5% Medium Easy 0.07216836682371046 0.07249550203815351 https://leetcode.com/problems/delete-node-in-a-bst https://leetcode.com/problems/flower-planting-with-no-adjacent
84 1148 450 Article Views I Delete Node in a BST 75.8% 43.1% Easy Medium 0.0715869066639981 0.07216836682371046 https://leetcode.com/problems/article-views-i https://leetcode.com/problems/delete-node-in-a-bst
85 187 1148 Repeated DNA Sequences Article Views I 38.9% 75.8% Medium Easy 0.06947237281476738 0.0715869066639981 https://leetcode.com/problems/repeated-dna-sequences https://leetcode.com/problems/article-views-i
86 323 187 Number of Connected Components in an Undirected Graph Repeated DNA Sequences 56.0% 38.9% Medium Medium 0.06931179989022884 0.06947237281476738 https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph https://leetcode.com/problems/repeated-dna-sequences
87 528 323 Random Pick with Weight Number of Connected Components in an Undirected Graph 43.9% 56.0% Medium Medium 0.05805039128849884 0.06931179989022884 https://leetcode.com/problems/random-pick-with-weight https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph
88 13 528 Roman to Integer Random Pick with Weight 55.7% 43.9% Easy Medium 0.05349762932680746 0.05805039128849884 https://leetcode.com/problems/roman-to-integer https://leetcode.com/problems/random-pick-with-weight
89 451 13 Sort Characters By Frequency Roman to Integer 63.0% 55.7% Medium Easy 0.05160771036247213 0.05349762932680746 https://leetcode.com/problems/sort-characters-by-frequency https://leetcode.com/problems/roman-to-integer
90 39 451 Combination Sum Sort Characters By Frequency 56.1% 63.0% Medium Medium 0.05030398316850793 0.05160771036247213 https://leetcode.com/problems/combination-sum https://leetcode.com/problems/sort-characters-by-frequency
91 412 39 Fizz Buzz Combination Sum 62.3% 56.1% Easy Medium 0.04396698989626337 0.05030398316850793 https://leetcode.com/problems/fizz-buzz https://leetcode.com/problems/combination-sum
92 146 412 LRU Cache Fizz Buzz 33.2% 62.3% Medium Easy 0.040660598211268925 0.04396698989626337 https://leetcode.com/problems/lru-cache https://leetcode.com/problems/fizz-buzz
93 833 146 Find And Replace in String LRU Cache 50.4% 33.2% Medium Medium 0.03984590854719967 0.040660598211268925 https://leetcode.com/problems/find-and-replace-in-string https://leetcode.com/problems/lru-cache
94 40 833 Combination Sum II Find And Replace in String 48.2% 50.4% Medium Medium 0.037775974158907266 0.03984590854719967 https://leetcode.com/problems/combination-sum-ii https://leetcode.com/problems/find-and-replace-in-string
95 23 40 Merge k Sorted Lists Combination Sum II 40.2% 48.2% Hard Medium 0.035885441255624394 0.037775974158907266 https://leetcode.com/problems/merge-k-sorted-lists https://leetcode.com/problems/combination-sum-ii
96 103 23 Binary Tree Zigzag Level Order Traversal Merge k Sorted Lists 48.3% 40.2% Medium Hard 0.03403976010989293 0.035885441255624394 https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal https://leetcode.com/problems/merge-k-sorted-lists
97 8 103 String to Integer (atoi) Binary Tree Zigzag Level Order Traversal 15.4% 48.3% Medium Medium 0.03362603162985522 0.03403976010989293 https://leetcode.com/problems/string-to-integer-atoi https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
98 173 8 Binary Search Tree Iterator String to Integer (atoi) 56.6% 15.4% Medium Medium 0.03353206029057467 0.03362603162985522 https://leetcode.com/problems/binary-search-tree-iterator https://leetcode.com/problems/string-to-integer-atoi
99 75 173 Sort Colors Binary Search Tree Iterator 47.3% 56.6% Medium Medium 0.030801991570373215 0.03353206029057467 https://leetcode.com/problems/sort-colors https://leetcode.com/problems/binary-search-tree-iterator
100 362 75 Design Hit Counter Sort Colors 63.7% 47.3% Medium Medium 0.025382073271417165 0.030801991570373215 https://leetcode.com/problems/design-hit-counter https://leetcode.com/problems/sort-colors
101 785 362 Is Graph Bipartite? Design Hit Counter 47.5% 63.7% Medium Medium 0.02510592113107633 0.025382073271417165 https://leetcode.com/problems/is-graph-bipartite https://leetcode.com/problems/design-hit-counter
102 981 785 Time Based Key-Value Store Is Graph Bipartite? 53.1% 47.5% Medium Medium 0.02226024024151985 0.02510592113107633 https://leetcode.com/problems/time-based-key-value-store https://leetcode.com/problems/is-graph-bipartite
103 359 981 Logger Rate Limiter Time Based Key-Value Store 70.8% 53.1% Easy Medium 0.021053409197832343 0.02226024024151985 https://leetcode.com/problems/logger-rate-limiter https://leetcode.com/problems/time-based-key-value-store
104 350 359 Intersection of Two Arrays II Logger Rate Limiter 51.4% 70.8% Easy Easy 0.020680587107206983 0.021053409197832343 https://leetcode.com/problems/intersection-of-two-arrays-ii https://leetcode.com/problems/logger-rate-limiter
105 270 350 Closest Binary Search Tree Value Intersection of Two Arrays II 48.5% 51.4% Easy Easy 0.017123706078591462 0.020680587107206983 https://leetcode.com/problems/closest-binary-search-tree-value https://leetcode.com/problems/intersection-of-two-arrays-ii
106 384 270 Shuffle an Array Closest Binary Search Tree Value 52.8% 48.5% Medium Easy 0.015250009609723824 0.017123706078591462 https://leetcode.com/problems/shuffle-an-array https://leetcode.com/problems/closest-binary-search-tree-value
107 54 384 Spiral Matrix Shuffle an Array 34.1% 52.8% Medium Medium 0.014776167707688753 0.015250009609723824 https://leetcode.com/problems/spiral-matrix https://leetcode.com/problems/shuffle-an-array
108 973 54 K Closest Points to Origin Spiral Matrix 63.8% 34.1% Medium Medium 0.012944233661064114 0.014776167707688753 https://leetcode.com/problems/k-closest-points-to-origin https://leetcode.com/problems/spiral-matrix
109 987 973 Vertical Order Traversal of a Binary Tree K Closest Points to Origin 36.6% 63.8% Medium Medium 0.011601058182762062 0.012944233661064114 https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree https://leetcode.com/problems/k-closest-points-to-origin
110 207 987 Course Schedule Vertical Order Traversal of a Binary Tree 43.1% 36.6% Medium Medium 0.01113459480911671 0.011601058182762062 https://leetcode.com/problems/course-schedule https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
111 113 207 Path Sum II Course Schedule 46.7% 43.1% Medium Medium 0.009784813879998279 0.01113459480911671 https://leetcode.com/problems/path-sum-ii https://leetcode.com/problems/course-schedule
112 279 113 Perfect Squares Path Sum II 47.4% 46.7% Medium Medium 0.009216655104924008 0.009784813879998279 https://leetcode.com/problems/perfect-squares https://leetcode.com/problems/path-sum-ii
113 198 279 House Robber Perfect Squares 42.0% 47.4% Easy Medium 0.008434914115059812 0.009216655104924008 https://leetcode.com/problems/house-robber https://leetcode.com/problems/perfect-squares
114 133 198 Clone Graph House Robber 34.8% 42.0% Medium Easy 0.008136741393061732 0.008434914115059812 https://leetcode.com/problems/clone-graph https://leetcode.com/problems/house-robber
115 141 133 Linked List Cycle Clone Graph 41.1% 34.8% Easy Medium 0.007843861028908454 0.008136741393061732 https://leetcode.com/problems/linked-list-cycle https://leetcode.com/problems/clone-graph
116 240 141 Search a 2D Matrix II Linked List Cycle 43.2% 41.1% Medium Easy 0.0075829747244553335 0.007843861028908454 https://leetcode.com/problems/search-a-2d-matrix-ii https://leetcode.com/problems/linked-list-cycle
117 692 240 Top K Frequent Words Search a 2D Matrix II 51.8% 43.2% Medium Medium 0.007516006820935329 0.0075829747244553335 https://leetcode.com/problems/top-k-frequent-words https://leetcode.com/problems/search-a-2d-matrix-ii
118 142 692 Linked List Cycle II Top K Frequent Words 37.3% 51.8% Medium Medium 0.006564934131150057 0.007516006820935329 https://leetcode.com/problems/linked-list-cycle-ii https://leetcode.com/problems/top-k-frequent-words
119 21 142 Merge Two Sorted Lists Linked List Cycle II 53.5% 37.3% Easy Medium 0.005067007800877041 0.006564934131150057 https://leetcode.com/problems/merge-two-sorted-lists https://leetcode.com/problems/linked-list-cycle-ii
120 155 21 Min Stack Merge Two Sorted Lists 44.5% 53.5% Easy Easy 0.00474891074128171 0.005067007800877041 https://leetcode.com/problems/min-stack https://leetcode.com/problems/merge-two-sorted-lists
121 560 155 Subarray Sum Equals K Min Stack 43.9% 44.5% Medium Easy 0.004279454482267064 0.00474891074128171 https://leetcode.com/problems/subarray-sum-equals-k https://leetcode.com/problems/min-stack
122 387 560 First Unique Character in a String Subarray Sum Equals K 53.4% 43.9% Easy Medium 0.00418541994270691 0.004279454482267064 https://leetcode.com/problems/first-unique-character-in-a-string https://leetcode.com/problems/subarray-sum-equals-k
123 125 387 Valid Palindrome First Unique Character in a String 36.7% 53.4% Easy Easy 0.0039805008274065926 0.00418541994270691 https://leetcode.com/problems/valid-palindrome https://leetcode.com/problems/first-unique-character-in-a-string
124 100 125 Same Tree Valid Palindrome 53.4% 36.7% Easy Easy 0.003165227373565798 0.0039805008274065926 https://leetcode.com/problems/same-tree https://leetcode.com/problems/valid-palindrome
125 98 100 Validate Binary Search Tree Same Tree 27.8% 53.4% Medium Easy 0.002943776044013381 0.003165227373565798 https://leetcode.com/problems/validate-binary-search-tree https://leetcode.com/problems/same-tree
126 121 98 Best Time to Buy and Sell Stock Validate Binary Search Tree 50.5% 27.8% Easy Medium 0.0021239321954525975 0.002943776044013381 https://leetcode.com/problems/best-time-to-buy-and-sell-stock https://leetcode.com/problems/validate-binary-search-tree
127 79 121 Word Search Best Time to Buy and Sell Stock 35.6% 50.5% Medium Easy 0.0016647248725526849 0.0021239321954525975 https://leetcode.com/problems/word-search https://leetcode.com/problems/best-time-to-buy-and-sell-stock
128 70 79 Climbing Stairs Word Search 47.8% 35.6% Easy Medium 0.0015084665529624085 0.0016647248725526849 https://leetcode.com/problems/climbing-stairs https://leetcode.com/problems/word-search
129 347 70 Top K Frequent Elements Climbing Stairs 61.2% 47.8% Medium Easy 0.0014856636219477439 0.0015084665529624085 https://leetcode.com/problems/top-k-frequent-elements https://leetcode.com/problems/climbing-stairs
130 347 Top K Frequent Elements 61.2% Medium 0.0014856636219477439 https://leetcode.com/problems/top-k-frequent-elements