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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

237
ebay_2year.csv
View File

@@ -1,118 +1,119 @@
545,Boundary of Binary Tree,38.9%,Medium,0.23484882359918047, https://leetcode.com/problems/boundary-of-binary-tree
146,LRU Cache,33.2%,Medium,0.19793208872567258, https://leetcode.com/problems/lru-cache
498,Diagonal Traverse,48.2%,Medium,0.1610153538521647, https://leetcode.com/problems/diagonal-traverse
702,Search in a Sorted Array of Unknown Size,66.9%,Medium,0.13783247452391326, https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size
968,Binary Tree Cameras,37.5%,Hard,0.12586422089000404, https://leetcode.com/problems/binary-tree-cameras
358,Rearrange String k Distance Apart,34.9%,Hard,0.08894748601649616, https://leetcode.com/problems/rearrange-string-k-distance-apart
703,Kth Largest Element in a Stream,49.7%,Easy,0.08385735299772534, https://leetcode.com/problems/kth-largest-element-in-a-stream
962,Maximum Width Ramp,45.4%,Medium,0.08184524810424337, https://leetcode.com/problems/maximum-width-ramp
250,Count Univalue Subtrees,52.0%,Medium,0.07975881838845024, https://leetcode.com/problems/count-univalue-subtrees
244,Shortest Word Distance II,52.3%,Medium,0.07622736538788424, https://leetcode.com/problems/shortest-word-distance-ii
253,Meeting Rooms II,45.7%,Medium,0.07046545668000562, https://leetcode.com/problems/meeting-rooms-ii
199,Binary Tree Right Side View,54.1%,Medium,0.06748154336946242, https://leetcode.com/problems/binary-tree-right-side-view
846,Hand of Straights,54.2%,Medium,0.06472423940349638, https://leetcode.com/problems/hand-of-straights
33,Search in Rotated Sorted Array,34.5%,Medium,0.06345616594863132, https://leetcode.com/problems/search-in-rotated-sorted-array
428,Serialize and Deserialize N-ary Tree,59.4%,Hard,0.06136894637629212, https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
796,Rotate String,49.6%,Easy,0.059778751425839334, https://leetcode.com/problems/rotate-string
366,Find Leaves of Binary Tree,70.6%,Medium,0.05526267867504946, https://leetcode.com/problems/find-leaves-of-binary-tree
735,Asteroid Collision,41.0%,Medium,0.05479154882968245, https://leetcode.com/problems/asteroid-collision
449,Serialize and Deserialize BST,52.0%,Medium,0.049844204077291364, https://leetcode.com/problems/serialize-and-deserialize-bst
227,Basic Calculator II,36.9%,Medium,0.04870104158125306, https://leetcode.com/problems/basic-calculator-ii
143,Reorder List,37.1%,Medium,0.04554002588608351, https://leetcode.com/problems/reorder-list
341,Flatten Nested List Iterator,52.9%,Medium,0.04440788848944038, https://leetcode.com/problems/flatten-nested-list-iterator
54,Spiral Matrix,34.1%,Medium,0.040517614757835795, https://leetcode.com/problems/spiral-matrix
138,Copy List with Random Pointer,36.4%,Medium,0.03807953223592622, https://leetcode.com/problems/copy-list-with-random-pointer
560,Subarray Sum Equals K,43.9%,Medium,0.037871360699521406, https://leetcode.com/problems/subarray-sum-equals-k
51,N-Queens,46.6%,Hard,0.03651521297509749, https://leetcode.com/problems/n-queens
23,Merge k Sorted Lists,40.2%,Hard,0.035885441255624394, https://leetcode.com/problems/merge-k-sorted-lists
283,Move Zeroes,57.8%,Easy,0.03478488123548069, https://leetcode.com/problems/move-zeroes
1146,Snapshot Array,37.0%,Medium,0.0317991816929387, https://leetcode.com/problems/snapshot-array
284,Peeking Iterator,45.7%,Medium,0.03110670713225487, https://leetcode.com/problems/peeking-iterator
297,Serialize and Deserialize Binary Tree,47.5%,Hard,0.028013036227673965, https://leetcode.com/problems/serialize-and-deserialize-binary-tree
5,Longest Palindromic Substring,29.5%,Medium,0.02757010450426751, https://leetcode.com/problems/longest-palindromic-substring
1438,Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit,42.1%,Medium,0.026955809988528263, https://leetcode.com/problems/longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit
130,Surrounded Regions,28.1%,Medium,0.02672368055211276, https://leetcode.com/problems/surrounded-regions
46,Permutations,63.5%,Medium,0.026064861710547768, https://leetcode.com/problems/permutations
200,Number of Islands,46.8%,Medium,0.025712029212602353, https://leetcode.com/problems/number-of-islands
951,Flip Equivalent Binary Trees,65.8%,Medium,0.025269822188076344, https://leetcode.com/problems/flip-equivalent-binary-trees
238,Product of Array Except Self,60.1%,Medium,0.024315533698358247, https://leetcode.com/problems/product-of-array-except-self
215,Kth Largest Element in an Array,55.4%,Medium,0.02414409892936099, https://leetcode.com/problems/kth-largest-element-in-an-array
31,Next Permutation,32.6%,Medium,0.023747034562878154, https://leetcode.com/problems/next-permutation
40,Combination Sum II,48.2%,Medium,0.021424290044083395, https://leetcode.com/problems/combination-sum-ii
698,Partition to K Equal Sum Subsets,45.0%,Medium,0.02109782896463587, https://leetcode.com/problems/partition-to-k-equal-sum-subsets
206,Reverse Linked List,62.5%,Easy,0.02086427467076072, https://leetcode.com/problems/reverse-linked-list
1122,Relative Sort Array,67.7%,Easy,0.019685675071030327, https://leetcode.com/problems/relative-sort-array
173,Binary Search Tree Iterator,56.6%,Medium,0.01899993824490396, https://leetcode.com/problems/binary-search-tree-iterator
3,Longest Substring Without Repeating Characters,30.4%,Medium,0.018891763947827014, https://leetcode.com/problems/longest-substring-without-repeating-characters
787,Cheapest Flights Within K Stops,39.3%,Medium,0.018824085245635554, https://leetcode.com/problems/cheapest-flights-within-k-stops
394,Decode String,50.0%,Medium,0.0182820448374491, https://leetcode.com/problems/decode-string
17,Letter Combinations of a Phone Number,46.8%,Medium,0.017492519932499718, https://leetcode.com/problems/letter-combinations-of-a-phone-number
240,Search a 2D Matrix II,43.2%,Medium,0.0169815401480941, https://leetcode.com/problems/search-a-2d-matrix-ii
658,Find K Closest Elements,40.9%,Medium,0.016611677666896175, https://leetcode.com/problems/find-k-closest-elements
10,Regular Expression Matching,26.8%,Hard,0.01609764684284749, https://leetcode.com/problems/regular-expression-matching
125,Valid Palindrome,36.7%,Easy,0.01582781088607703, https://leetcode.com/problems/valid-palindrome
977,Squares of a Sorted Array,72.1%,Easy,0.015474196582597383, https://leetcode.com/problems/squares-of-a-sorted-array
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.015272005981326173, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
153,Find Minimum in Rotated Sorted Array,45.1%,Medium,0.014939586916186732, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
102,Binary Tree Level Order Traversal,54.6%,Medium,0.014477270588287548, https://leetcode.com/problems/binary-tree-level-order-traversal
20,Valid Parentheses,39.0%,Easy,0.014292491180025941, https://leetcode.com/problems/valid-parentheses
443,String Compression,41.3%,Easy,0.01390843004613198, https://leetcode.com/problems/string-compression
141,Linked List Cycle,41.1%,Easy,0.01390238743679306, https://leetcode.com/problems/linked-list-cycle
56,Merge Intervals,39.3%,Medium,0.013819532422258866, https://leetcode.com/problems/merge-intervals
767,Reorganize String,48.7%,Medium,0.01329806830463147, https://leetcode.com/problems/reorganize-string
665,Non-decreasing Array,19.5%,Easy,0.013016779950191773, https://leetcode.com/problems/non-decreasing-array
129,Sum Root to Leaf Numbers,49.1%,Medium,0.012739025777429757, https://leetcode.com/problems/sum-root-to-leaf-numbers
213,House Robber II,36.5%,Medium,0.012654392210497564, https://leetcode.com/problems/house-robber-ii
287,Find the Duplicate Number,55.5%,Medium,0.012335682739188652, https://leetcode.com/problems/find-the-duplicate-number
445,Add Two Numbers II,54.5%,Medium,0.01233061245747872, https://leetcode.com/problems/add-two-numbers-ii
547,Friend Circles,58.6%,Medium,0.012228828639434596, https://leetcode.com/problems/friend-circles
300,Longest Increasing Subsequence,42.6%,Medium,0.011806512586989004, https://leetcode.com/problems/longest-increasing-subsequence
785,Is Graph Bipartite?,47.5%,Medium,0.011236073266925854, https://leetcode.com/problems/is-graph-bipartite
207,Course Schedule,43.1%,Medium,0.01113459480911671, https://leetcode.com/problems/course-schedule
160,Intersection of Two Linked Lists,40.6%,Easy,0.010994491398666248, https://leetcode.com/problems/intersection-of-two-linked-lists
662,Maximum Width of Binary Tree,41.0%,Medium,0.010790501245113902, https://leetcode.com/problems/maximum-width-of-binary-tree
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,0.010575891759058162, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
211,Add and Search Word - Data structure design,38.1%,Medium,0.010438508143923443, https://leetcode.com/problems/add-and-search-word-data-structure-design
25,Reverse Nodes in k-Group,42.1%,Hard,0.01021198560502829, https://leetcode.com/problems/reverse-nodes-in-k-group
1,Two Sum,45.6%,Easy,0.010006414028595919, https://leetcode.com/problems/two-sum
279,Perfect Squares,47.4%,Medium,0.009216655104924008, https://leetcode.com/problems/perfect-squares
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
189,Rotate Array,34.7%,Easy,0.00904437880665999, https://leetcode.com/problems/rotate-array
295,Find Median from Data Stream,44.3%,Hard,0.00899893586856953, https://leetcode.com/problems/find-median-from-data-stream
28,Implement strStr(),34.5%,Easy,0.008850485542574548, https://leetcode.com/problems/implement-strstr
4,Median of Two Sorted Arrays,29.6%,Hard,0.008754068159914991, https://leetcode.com/problems/median-of-two-sorted-arrays
139,Word Break,40.1%,Medium,0.008741314401573542, https://leetcode.com/problems/word-break
53,Maximum Subarray,46.5%,Easy,0.008640295679602939, https://leetcode.com/problems/maximum-subarray
49,Group Anagrams,56.9%,Medium,0.008538951314232168, https://leetcode.com/problems/group-anagrams
8,String to Integer (atoi),15.4%,Medium,0.008513104762248265, https://leetcode.com/problems/string-to-integer-atoi
328,Odd Even Linked List,55.7%,Medium,0.00764383618585562, https://leetcode.com/problems/odd-even-linked-list
994,Rotting Oranges,49.2%,Medium,0.007630712341163886, https://leetcode.com/problems/rotting-oranges
176,Second Highest Salary,31.6%,Easy,0.007393749024938284, https://leetcode.com/problems/second-highest-salary
344,Reverse String,68.5%,Easy,0.00734157796234515, https://leetcode.com/problems/reverse-string
66,Plus One,43.0%,Easy,0.007324847595025828, https://leetcode.com/problems/plus-one
204,Count Primes,31.5%,Easy,0.007072165261362441, https://leetcode.com/problems/count-primes
142,Linked List Cycle II,37.3%,Medium,0.006564934131150057, https://leetcode.com/problems/linked-list-cycle-ii
41,First Missing Positive,32.0%,Hard,0.0064113058208121855, https://leetcode.com/problems/first-missing-positive
83,Remove Duplicates from Sorted List,45.4%,Easy,0.006353261522609498, https://leetcode.com/problems/remove-duplicates-from-sorted-list
202,Happy Number,50.4%,Easy,0.006266666286010046, https://leetcode.com/problems/happy-number
76,Minimum Window Substring,34.6%,Hard,0.006231520398723243, https://leetcode.com/problems/minimum-window-substring
24,Swap Nodes in Pairs,50.4%,Medium,0.0062218275061505365, https://leetcode.com/problems/swap-nodes-in-pairs
347,Top K Frequent Elements,61.2%,Medium,0.005929457040438874, https://leetcode.com/problems/top-k-frequent-elements
973,K Closest Points to Origin,63.8%,Medium,0.005773688094426333, https://leetcode.com/problems/k-closest-points-to-origin
39,Combination Sum,56.1%,Medium,0.005715934396440999, https://leetcode.com/problems/combination-sum
21,Merge Two Sorted Lists,53.5%,Easy,0.005067007800877041, https://leetcode.com/problems/merge-two-sorted-lists
75,Sort Colors,47.3%,Medium,0.004992521603120986, https://leetcode.com/problems/sort-colors
15,3Sum,26.8%,Medium,0.004940992758742591, https://leetcode.com/problems/3sum
155,Min Stack,44.5%,Easy,0.00474891074128171, https://leetcode.com/problems/min-stack
42,Trapping Rain Water,48.9%,Hard,0.004350670338744988, https://leetcode.com/problems/trapping-rain-water
322,Coin Change,35.5%,Medium,0.004029826126500844, https://leetcode.com/problems/coin-change
198,House Robber,42.0%,Easy,0.0037576371128333645, https://leetcode.com/problems/house-robber
78,Subsets,62.0%,Medium,0.00368765975195334, https://leetcode.com/problems/subsets
14,Longest Common Prefix,35.4%,Easy,0.003320331762984143, https://leetcode.com/problems/longest-common-prefix
50,Pow(x;n),30.3%,Medium,0.0031510424503886844, https://leetcode.com/problems/powx-n
88,Merge Sorted Array,39.4%,Easy,0.0030102370714243072, https://leetcode.com/problems/merge-sorted-array
98,Validate Binary Search Tree,27.8%,Medium,0.002943776044013381, https://leetcode.com/problems/validate-binary-search-tree
140,Word Break II,32.6%,Hard,0.0027070942357783584, https://leetcode.com/problems/word-break-ii
26,Remove Duplicates from Sorted Array,45.1%,Easy,0.0019513153174351963, https://leetcode.com/problems/remove-duplicates-from-sorted-array
2,Add Two Numbers,33.9%,Medium,0.0016886191111440908, https://leetcode.com/problems/add-two-numbers
ID,Title,Acceptance,Difficulty,Frequency,Leetcode Question Link
545,Boundary of Binary Tree,38.9%,Medium,0.23484882359918047, https://leetcode.com/problems/boundary-of-binary-tree
146,LRU Cache,33.2%,Medium,0.19793208872567258, https://leetcode.com/problems/lru-cache
498,Diagonal Traverse,48.2%,Medium,0.1610153538521647, https://leetcode.com/problems/diagonal-traverse
702,Search in a Sorted Array of Unknown Size,66.9%,Medium,0.13783247452391326, https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size
968,Binary Tree Cameras,37.5%,Hard,0.12586422089000404, https://leetcode.com/problems/binary-tree-cameras
358,Rearrange String k Distance Apart,34.9%,Hard,0.08894748601649616, https://leetcode.com/problems/rearrange-string-k-distance-apart
703,Kth Largest Element in a Stream,49.7%,Easy,0.08385735299772534, https://leetcode.com/problems/kth-largest-element-in-a-stream
962,Maximum Width Ramp,45.4%,Medium,0.08184524810424337, https://leetcode.com/problems/maximum-width-ramp
250,Count Univalue Subtrees,52.0%,Medium,0.07975881838845024, https://leetcode.com/problems/count-univalue-subtrees
244,Shortest Word Distance II,52.3%,Medium,0.07622736538788424, https://leetcode.com/problems/shortest-word-distance-ii
253,Meeting Rooms II,45.7%,Medium,0.07046545668000562, https://leetcode.com/problems/meeting-rooms-ii
199,Binary Tree Right Side View,54.1%,Medium,0.06748154336946242, https://leetcode.com/problems/binary-tree-right-side-view
846,Hand of Straights,54.2%,Medium,0.06472423940349638, https://leetcode.com/problems/hand-of-straights
33,Search in Rotated Sorted Array,34.5%,Medium,0.06345616594863132, https://leetcode.com/problems/search-in-rotated-sorted-array
428,Serialize and Deserialize N-ary Tree,59.4%,Hard,0.06136894637629212, https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
796,Rotate String,49.6%,Easy,0.059778751425839334, https://leetcode.com/problems/rotate-string
366,Find Leaves of Binary Tree,70.6%,Medium,0.05526267867504946, https://leetcode.com/problems/find-leaves-of-binary-tree
735,Asteroid Collision,41.0%,Medium,0.05479154882968245, https://leetcode.com/problems/asteroid-collision
449,Serialize and Deserialize BST,52.0%,Medium,0.049844204077291364, https://leetcode.com/problems/serialize-and-deserialize-bst
227,Basic Calculator II,36.9%,Medium,0.04870104158125306, https://leetcode.com/problems/basic-calculator-ii
143,Reorder List,37.1%,Medium,0.04554002588608351, https://leetcode.com/problems/reorder-list
341,Flatten Nested List Iterator,52.9%,Medium,0.04440788848944038, https://leetcode.com/problems/flatten-nested-list-iterator
54,Spiral Matrix,34.1%,Medium,0.040517614757835795, https://leetcode.com/problems/spiral-matrix
138,Copy List with Random Pointer,36.4%,Medium,0.03807953223592622, https://leetcode.com/problems/copy-list-with-random-pointer
560,Subarray Sum Equals K,43.9%,Medium,0.037871360699521406, https://leetcode.com/problems/subarray-sum-equals-k
51,N-Queens,46.6%,Hard,0.03651521297509749, https://leetcode.com/problems/n-queens
23,Merge k Sorted Lists,40.2%,Hard,0.035885441255624394, https://leetcode.com/problems/merge-k-sorted-lists
283,Move Zeroes,57.8%,Easy,0.03478488123548069, https://leetcode.com/problems/move-zeroes
1146,Snapshot Array,37.0%,Medium,0.0317991816929387, https://leetcode.com/problems/snapshot-array
284,Peeking Iterator,45.7%,Medium,0.03110670713225487, https://leetcode.com/problems/peeking-iterator
297,Serialize and Deserialize Binary Tree,47.5%,Hard,0.028013036227673965, https://leetcode.com/problems/serialize-and-deserialize-binary-tree
5,Longest Palindromic Substring,29.5%,Medium,0.02757010450426751, https://leetcode.com/problems/longest-palindromic-substring
1438,Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit,42.1%,Medium,0.026955809988528263, https://leetcode.com/problems/longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit
130,Surrounded Regions,28.1%,Medium,0.02672368055211276, https://leetcode.com/problems/surrounded-regions
46,Permutations,63.5%,Medium,0.026064861710547768, https://leetcode.com/problems/permutations
200,Number of Islands,46.8%,Medium,0.025712029212602353, https://leetcode.com/problems/number-of-islands
951,Flip Equivalent Binary Trees,65.8%,Medium,0.025269822188076344, https://leetcode.com/problems/flip-equivalent-binary-trees
238,Product of Array Except Self,60.1%,Medium,0.024315533698358247, https://leetcode.com/problems/product-of-array-except-self
215,Kth Largest Element in an Array,55.4%,Medium,0.02414409892936099, https://leetcode.com/problems/kth-largest-element-in-an-array
31,Next Permutation,32.6%,Medium,0.023747034562878154, https://leetcode.com/problems/next-permutation
40,Combination Sum II,48.2%,Medium,0.021424290044083395, https://leetcode.com/problems/combination-sum-ii
698,Partition to K Equal Sum Subsets,45.0%,Medium,0.02109782896463587, https://leetcode.com/problems/partition-to-k-equal-sum-subsets
206,Reverse Linked List,62.5%,Easy,0.02086427467076072, https://leetcode.com/problems/reverse-linked-list
1122,Relative Sort Array,67.7%,Easy,0.019685675071030327, https://leetcode.com/problems/relative-sort-array
173,Binary Search Tree Iterator,56.6%,Medium,0.01899993824490396, https://leetcode.com/problems/binary-search-tree-iterator
3,Longest Substring Without Repeating Characters,30.4%,Medium,0.018891763947827014, https://leetcode.com/problems/longest-substring-without-repeating-characters
787,Cheapest Flights Within K Stops,39.3%,Medium,0.018824085245635554, https://leetcode.com/problems/cheapest-flights-within-k-stops
394,Decode String,50.0%,Medium,0.0182820448374491, https://leetcode.com/problems/decode-string
17,Letter Combinations of a Phone Number,46.8%,Medium,0.017492519932499718, https://leetcode.com/problems/letter-combinations-of-a-phone-number
240,Search a 2D Matrix II,43.2%,Medium,0.0169815401480941, https://leetcode.com/problems/search-a-2d-matrix-ii
658,Find K Closest Elements,40.9%,Medium,0.016611677666896175, https://leetcode.com/problems/find-k-closest-elements
10,Regular Expression Matching,26.8%,Hard,0.01609764684284749, https://leetcode.com/problems/regular-expression-matching
125,Valid Palindrome,36.7%,Easy,0.01582781088607703, https://leetcode.com/problems/valid-palindrome
977,Squares of a Sorted Array,72.1%,Easy,0.015474196582597383, https://leetcode.com/problems/squares-of-a-sorted-array
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.015272005981326173, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
153,Find Minimum in Rotated Sorted Array,45.1%,Medium,0.014939586916186732, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
102,Binary Tree Level Order Traversal,54.6%,Medium,0.014477270588287548, https://leetcode.com/problems/binary-tree-level-order-traversal
20,Valid Parentheses,39.0%,Easy,0.014292491180025941, https://leetcode.com/problems/valid-parentheses
443,String Compression,41.3%,Easy,0.01390843004613198, https://leetcode.com/problems/string-compression
141,Linked List Cycle,41.1%,Easy,0.01390238743679306, https://leetcode.com/problems/linked-list-cycle
56,Merge Intervals,39.3%,Medium,0.013819532422258866, https://leetcode.com/problems/merge-intervals
767,Reorganize String,48.7%,Medium,0.01329806830463147, https://leetcode.com/problems/reorganize-string
665,Non-decreasing Array,19.5%,Easy,0.013016779950191773, https://leetcode.com/problems/non-decreasing-array
129,Sum Root to Leaf Numbers,49.1%,Medium,0.012739025777429757, https://leetcode.com/problems/sum-root-to-leaf-numbers
213,House Robber II,36.5%,Medium,0.012654392210497564, https://leetcode.com/problems/house-robber-ii
287,Find the Duplicate Number,55.5%,Medium,0.012335682739188652, https://leetcode.com/problems/find-the-duplicate-number
445,Add Two Numbers II,54.5%,Medium,0.01233061245747872, https://leetcode.com/problems/add-two-numbers-ii
547,Friend Circles,58.6%,Medium,0.012228828639434596, https://leetcode.com/problems/friend-circles
300,Longest Increasing Subsequence,42.6%,Medium,0.011806512586989004, https://leetcode.com/problems/longest-increasing-subsequence
785,Is Graph Bipartite?,47.5%,Medium,0.011236073266925854, https://leetcode.com/problems/is-graph-bipartite
207,Course Schedule,43.1%,Medium,0.01113459480911671, https://leetcode.com/problems/course-schedule
160,Intersection of Two Linked Lists,40.6%,Easy,0.010994491398666248, https://leetcode.com/problems/intersection-of-two-linked-lists
662,Maximum Width of Binary Tree,41.0%,Medium,0.010790501245113902, https://leetcode.com/problems/maximum-width-of-binary-tree
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,0.010575891759058162, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
211,Add and Search Word - Data structure design,38.1%,Medium,0.010438508143923443, https://leetcode.com/problems/add-and-search-word-data-structure-design
25,Reverse Nodes in k-Group,42.1%,Hard,0.01021198560502829, https://leetcode.com/problems/reverse-nodes-in-k-group
1,Two Sum,45.6%,Easy,0.010006414028595919, https://leetcode.com/problems/two-sum
279,Perfect Squares,47.4%,Medium,0.009216655104924008, https://leetcode.com/problems/perfect-squares
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
189,Rotate Array,34.7%,Easy,0.00904437880665999, https://leetcode.com/problems/rotate-array
295,Find Median from Data Stream,44.3%,Hard,0.00899893586856953, https://leetcode.com/problems/find-median-from-data-stream
28,Implement strStr(),34.5%,Easy,0.008850485542574548, https://leetcode.com/problems/implement-strstr
4,Median of Two Sorted Arrays,29.6%,Hard,0.008754068159914991, https://leetcode.com/problems/median-of-two-sorted-arrays
139,Word Break,40.1%,Medium,0.008741314401573542, https://leetcode.com/problems/word-break
53,Maximum Subarray,46.5%,Easy,0.008640295679602939, https://leetcode.com/problems/maximum-subarray
49,Group Anagrams,56.9%,Medium,0.008538951314232168, https://leetcode.com/problems/group-anagrams
8,String to Integer (atoi),15.4%,Medium,0.008513104762248265, https://leetcode.com/problems/string-to-integer-atoi
328,Odd Even Linked List,55.7%,Medium,0.00764383618585562, https://leetcode.com/problems/odd-even-linked-list
994,Rotting Oranges,49.2%,Medium,0.007630712341163886, https://leetcode.com/problems/rotting-oranges
176,Second Highest Salary,31.6%,Easy,0.007393749024938284, https://leetcode.com/problems/second-highest-salary
344,Reverse String,68.5%,Easy,0.00734157796234515, https://leetcode.com/problems/reverse-string
66,Plus One,43.0%,Easy,0.007324847595025828, https://leetcode.com/problems/plus-one
204,Count Primes,31.5%,Easy,0.007072165261362441, https://leetcode.com/problems/count-primes
142,Linked List Cycle II,37.3%,Medium,0.006564934131150057, https://leetcode.com/problems/linked-list-cycle-ii
41,First Missing Positive,32.0%,Hard,0.0064113058208121855, https://leetcode.com/problems/first-missing-positive
83,Remove Duplicates from Sorted List,45.4%,Easy,0.006353261522609498, https://leetcode.com/problems/remove-duplicates-from-sorted-list
202,Happy Number,50.4%,Easy,0.006266666286010046, https://leetcode.com/problems/happy-number
76,Minimum Window Substring,34.6%,Hard,0.006231520398723243, https://leetcode.com/problems/minimum-window-substring
24,Swap Nodes in Pairs,50.4%,Medium,0.0062218275061505365, https://leetcode.com/problems/swap-nodes-in-pairs
347,Top K Frequent Elements,61.2%,Medium,0.005929457040438874, https://leetcode.com/problems/top-k-frequent-elements
973,K Closest Points to Origin,63.8%,Medium,0.005773688094426333, https://leetcode.com/problems/k-closest-points-to-origin
39,Combination Sum,56.1%,Medium,0.005715934396440999, https://leetcode.com/problems/combination-sum
21,Merge Two Sorted Lists,53.5%,Easy,0.005067007800877041, https://leetcode.com/problems/merge-two-sorted-lists
75,Sort Colors,47.3%,Medium,0.004992521603120986, https://leetcode.com/problems/sort-colors
15,3Sum,26.8%,Medium,0.004940992758742591, https://leetcode.com/problems/3sum
155,Min Stack,44.5%,Easy,0.00474891074128171, https://leetcode.com/problems/min-stack
42,Trapping Rain Water,48.9%,Hard,0.004350670338744988, https://leetcode.com/problems/trapping-rain-water
322,Coin Change,35.5%,Medium,0.004029826126500844, https://leetcode.com/problems/coin-change
198,House Robber,42.0%,Easy,0.0037576371128333645, https://leetcode.com/problems/house-robber
78,Subsets,62.0%,Medium,0.00368765975195334, https://leetcode.com/problems/subsets
14,Longest Common Prefix,35.4%,Easy,0.003320331762984143, https://leetcode.com/problems/longest-common-prefix
50,Pow(x;n),30.3%,Medium,0.0031510424503886844, https://leetcode.com/problems/powx-n
88,Merge Sorted Array,39.4%,Easy,0.0030102370714243072, https://leetcode.com/problems/merge-sorted-array
98,Validate Binary Search Tree,27.8%,Medium,0.002943776044013381, https://leetcode.com/problems/validate-binary-search-tree
140,Word Break II,32.6%,Hard,0.0027070942357783584, https://leetcode.com/problems/word-break-ii
26,Remove Duplicates from Sorted Array,45.1%,Easy,0.0019513153174351963, https://leetcode.com/problems/remove-duplicates-from-sorted-array
2,Add Two Numbers,33.9%,Medium,0.0016886191111440908, https://leetcode.com/problems/add-two-numbers
1 545 ID Boundary of Binary Tree Title 38.9% Acceptance Medium Difficulty 0.23484882359918047 Frequency https://leetcode.com/problems/boundary-of-binary-tree Leetcode Question Link
2 146 545 LRU Cache Boundary of Binary Tree 33.2% 38.9% Medium Medium 0.19793208872567258 0.23484882359918047 https://leetcode.com/problems/lru-cache https://leetcode.com/problems/boundary-of-binary-tree
3 498 146 Diagonal Traverse LRU Cache 48.2% 33.2% Medium Medium 0.1610153538521647 0.19793208872567258 https://leetcode.com/problems/diagonal-traverse https://leetcode.com/problems/lru-cache
4 702 498 Search in a Sorted Array of Unknown Size Diagonal Traverse 66.9% 48.2% Medium Medium 0.13783247452391326 0.1610153538521647 https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size https://leetcode.com/problems/diagonal-traverse
5 968 702 Binary Tree Cameras Search in a Sorted Array of Unknown Size 37.5% 66.9% Hard Medium 0.12586422089000404 0.13783247452391326 https://leetcode.com/problems/binary-tree-cameras https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size
6 358 968 Rearrange String k Distance Apart Binary Tree Cameras 34.9% 37.5% Hard Hard 0.08894748601649616 0.12586422089000404 https://leetcode.com/problems/rearrange-string-k-distance-apart https://leetcode.com/problems/binary-tree-cameras
7 703 358 Kth Largest Element in a Stream Rearrange String k Distance Apart 49.7% 34.9% Easy Hard 0.08385735299772534 0.08894748601649616 https://leetcode.com/problems/kth-largest-element-in-a-stream https://leetcode.com/problems/rearrange-string-k-distance-apart
8 962 703 Maximum Width Ramp Kth Largest Element in a Stream 45.4% 49.7% Medium Easy 0.08184524810424337 0.08385735299772534 https://leetcode.com/problems/maximum-width-ramp https://leetcode.com/problems/kth-largest-element-in-a-stream
9 250 962 Count Univalue Subtrees Maximum Width Ramp 52.0% 45.4% Medium Medium 0.07975881838845024 0.08184524810424337 https://leetcode.com/problems/count-univalue-subtrees https://leetcode.com/problems/maximum-width-ramp
10 244 250 Shortest Word Distance II Count Univalue Subtrees 52.3% 52.0% Medium Medium 0.07622736538788424 0.07975881838845024 https://leetcode.com/problems/shortest-word-distance-ii https://leetcode.com/problems/count-univalue-subtrees
11 253 244 Meeting Rooms II Shortest Word Distance II 45.7% 52.3% Medium Medium 0.07046545668000562 0.07622736538788424 https://leetcode.com/problems/meeting-rooms-ii https://leetcode.com/problems/shortest-word-distance-ii
12 199 253 Binary Tree Right Side View Meeting Rooms II 54.1% 45.7% Medium Medium 0.06748154336946242 0.07046545668000562 https://leetcode.com/problems/binary-tree-right-side-view https://leetcode.com/problems/meeting-rooms-ii
13 846 199 Hand of Straights Binary Tree Right Side View 54.2% 54.1% Medium Medium 0.06472423940349638 0.06748154336946242 https://leetcode.com/problems/hand-of-straights https://leetcode.com/problems/binary-tree-right-side-view
14 33 846 Search in Rotated Sorted Array Hand of Straights 34.5% 54.2% Medium Medium 0.06345616594863132 0.06472423940349638 https://leetcode.com/problems/search-in-rotated-sorted-array https://leetcode.com/problems/hand-of-straights
15 428 33 Serialize and Deserialize N-ary Tree Search in Rotated Sorted Array 59.4% 34.5% Hard Medium 0.06136894637629212 0.06345616594863132 https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree https://leetcode.com/problems/search-in-rotated-sorted-array
16 796 428 Rotate String Serialize and Deserialize N-ary Tree 49.6% 59.4% Easy Hard 0.059778751425839334 0.06136894637629212 https://leetcode.com/problems/rotate-string https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
17 366 796 Find Leaves of Binary Tree Rotate String 70.6% 49.6% Medium Easy 0.05526267867504946 0.059778751425839334 https://leetcode.com/problems/find-leaves-of-binary-tree https://leetcode.com/problems/rotate-string
18 735 366 Asteroid Collision Find Leaves of Binary Tree 41.0% 70.6% Medium Medium 0.05479154882968245 0.05526267867504946 https://leetcode.com/problems/asteroid-collision https://leetcode.com/problems/find-leaves-of-binary-tree
19 449 735 Serialize and Deserialize BST Asteroid Collision 52.0% 41.0% Medium Medium 0.049844204077291364 0.05479154882968245 https://leetcode.com/problems/serialize-and-deserialize-bst https://leetcode.com/problems/asteroid-collision
20 227 449 Basic Calculator II Serialize and Deserialize BST 36.9% 52.0% Medium Medium 0.04870104158125306 0.049844204077291364 https://leetcode.com/problems/basic-calculator-ii https://leetcode.com/problems/serialize-and-deserialize-bst
21 143 227 Reorder List Basic Calculator II 37.1% 36.9% Medium Medium 0.04554002588608351 0.04870104158125306 https://leetcode.com/problems/reorder-list https://leetcode.com/problems/basic-calculator-ii
22 341 143 Flatten Nested List Iterator Reorder List 52.9% 37.1% Medium Medium 0.04440788848944038 0.04554002588608351 https://leetcode.com/problems/flatten-nested-list-iterator https://leetcode.com/problems/reorder-list
23 54 341 Spiral Matrix Flatten Nested List Iterator 34.1% 52.9% Medium Medium 0.040517614757835795 0.04440788848944038 https://leetcode.com/problems/spiral-matrix https://leetcode.com/problems/flatten-nested-list-iterator
24 138 54 Copy List with Random Pointer Spiral Matrix 36.4% 34.1% Medium Medium 0.03807953223592622 0.040517614757835795 https://leetcode.com/problems/copy-list-with-random-pointer https://leetcode.com/problems/spiral-matrix
25 560 138 Subarray Sum Equals K Copy List with Random Pointer 43.9% 36.4% Medium Medium 0.037871360699521406 0.03807953223592622 https://leetcode.com/problems/subarray-sum-equals-k https://leetcode.com/problems/copy-list-with-random-pointer
26 51 560 N-Queens Subarray Sum Equals K 46.6% 43.9% Hard Medium 0.03651521297509749 0.037871360699521406 https://leetcode.com/problems/n-queens https://leetcode.com/problems/subarray-sum-equals-k
27 23 51 Merge k Sorted Lists N-Queens 40.2% 46.6% Hard Hard 0.035885441255624394 0.03651521297509749 https://leetcode.com/problems/merge-k-sorted-lists https://leetcode.com/problems/n-queens
28 283 23 Move Zeroes Merge k Sorted Lists 57.8% 40.2% Easy Hard 0.03478488123548069 0.035885441255624394 https://leetcode.com/problems/move-zeroes https://leetcode.com/problems/merge-k-sorted-lists
29 1146 283 Snapshot Array Move Zeroes 37.0% 57.8% Medium Easy 0.0317991816929387 0.03478488123548069 https://leetcode.com/problems/snapshot-array https://leetcode.com/problems/move-zeroes
30 284 1146 Peeking Iterator Snapshot Array 45.7% 37.0% Medium Medium 0.03110670713225487 0.0317991816929387 https://leetcode.com/problems/peeking-iterator https://leetcode.com/problems/snapshot-array
31 297 284 Serialize and Deserialize Binary Tree Peeking Iterator 47.5% 45.7% Hard Medium 0.028013036227673965 0.03110670713225487 https://leetcode.com/problems/serialize-and-deserialize-binary-tree https://leetcode.com/problems/peeking-iterator
32 5 297 Longest Palindromic Substring Serialize and Deserialize Binary Tree 29.5% 47.5% Medium Hard 0.02757010450426751 0.028013036227673965 https://leetcode.com/problems/longest-palindromic-substring https://leetcode.com/problems/serialize-and-deserialize-binary-tree
33 1438 5 Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit Longest Palindromic Substring 42.1% 29.5% Medium Medium 0.026955809988528263 0.02757010450426751 https://leetcode.com/problems/longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit https://leetcode.com/problems/longest-palindromic-substring
34 130 1438 Surrounded Regions Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit 28.1% 42.1% Medium Medium 0.02672368055211276 0.026955809988528263 https://leetcode.com/problems/surrounded-regions https://leetcode.com/problems/longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit
35 46 130 Permutations Surrounded Regions 63.5% 28.1% Medium Medium 0.026064861710547768 0.02672368055211276 https://leetcode.com/problems/permutations https://leetcode.com/problems/surrounded-regions
36 200 46 Number of Islands Permutations 46.8% 63.5% Medium Medium 0.025712029212602353 0.026064861710547768 https://leetcode.com/problems/number-of-islands https://leetcode.com/problems/permutations
37 951 200 Flip Equivalent Binary Trees Number of Islands 65.8% 46.8% Medium Medium 0.025269822188076344 0.025712029212602353 https://leetcode.com/problems/flip-equivalent-binary-trees https://leetcode.com/problems/number-of-islands
38 238 951 Product of Array Except Self Flip Equivalent Binary Trees 60.1% 65.8% Medium Medium 0.024315533698358247 0.025269822188076344 https://leetcode.com/problems/product-of-array-except-self https://leetcode.com/problems/flip-equivalent-binary-trees
39 215 238 Kth Largest Element in an Array Product of Array Except Self 55.4% 60.1% Medium Medium 0.02414409892936099 0.024315533698358247 https://leetcode.com/problems/kth-largest-element-in-an-array https://leetcode.com/problems/product-of-array-except-self
40 31 215 Next Permutation Kth Largest Element in an Array 32.6% 55.4% Medium Medium 0.023747034562878154 0.02414409892936099 https://leetcode.com/problems/next-permutation https://leetcode.com/problems/kth-largest-element-in-an-array
41 40 31 Combination Sum II Next Permutation 48.2% 32.6% Medium Medium 0.021424290044083395 0.023747034562878154 https://leetcode.com/problems/combination-sum-ii https://leetcode.com/problems/next-permutation
42 698 40 Partition to K Equal Sum Subsets Combination Sum II 45.0% 48.2% Medium Medium 0.02109782896463587 0.021424290044083395 https://leetcode.com/problems/partition-to-k-equal-sum-subsets https://leetcode.com/problems/combination-sum-ii
43 206 698 Reverse Linked List Partition to K Equal Sum Subsets 62.5% 45.0% Easy Medium 0.02086427467076072 0.02109782896463587 https://leetcode.com/problems/reverse-linked-list https://leetcode.com/problems/partition-to-k-equal-sum-subsets
44 1122 206 Relative Sort Array Reverse Linked List 67.7% 62.5% Easy Easy 0.019685675071030327 0.02086427467076072 https://leetcode.com/problems/relative-sort-array https://leetcode.com/problems/reverse-linked-list
45 173 1122 Binary Search Tree Iterator Relative Sort Array 56.6% 67.7% Medium Easy 0.01899993824490396 0.019685675071030327 https://leetcode.com/problems/binary-search-tree-iterator https://leetcode.com/problems/relative-sort-array
46 3 173 Longest Substring Without Repeating Characters Binary Search Tree Iterator 30.4% 56.6% Medium Medium 0.018891763947827014 0.01899993824490396 https://leetcode.com/problems/longest-substring-without-repeating-characters https://leetcode.com/problems/binary-search-tree-iterator
47 787 3 Cheapest Flights Within K Stops Longest Substring Without Repeating Characters 39.3% 30.4% Medium Medium 0.018824085245635554 0.018891763947827014 https://leetcode.com/problems/cheapest-flights-within-k-stops https://leetcode.com/problems/longest-substring-without-repeating-characters
48 394 787 Decode String Cheapest Flights Within K Stops 50.0% 39.3% Medium Medium 0.0182820448374491 0.018824085245635554 https://leetcode.com/problems/decode-string https://leetcode.com/problems/cheapest-flights-within-k-stops
49 17 394 Letter Combinations of a Phone Number Decode String 46.8% 50.0% Medium Medium 0.017492519932499718 0.0182820448374491 https://leetcode.com/problems/letter-combinations-of-a-phone-number https://leetcode.com/problems/decode-string
50 240 17 Search a 2D Matrix II Letter Combinations of a Phone Number 43.2% 46.8% Medium Medium 0.0169815401480941 0.017492519932499718 https://leetcode.com/problems/search-a-2d-matrix-ii https://leetcode.com/problems/letter-combinations-of-a-phone-number
51 658 240 Find K Closest Elements Search a 2D Matrix II 40.9% 43.2% Medium Medium 0.016611677666896175 0.0169815401480941 https://leetcode.com/problems/find-k-closest-elements https://leetcode.com/problems/search-a-2d-matrix-ii
52 10 658 Regular Expression Matching Find K Closest Elements 26.8% 40.9% Hard Medium 0.01609764684284749 0.016611677666896175 https://leetcode.com/problems/regular-expression-matching https://leetcode.com/problems/find-k-closest-elements
53 125 10 Valid Palindrome Regular Expression Matching 36.7% 26.8% Easy Hard 0.01582781088607703 0.01609764684284749 https://leetcode.com/problems/valid-palindrome https://leetcode.com/problems/regular-expression-matching
54 977 125 Squares of a Sorted Array Valid Palindrome 72.1% 36.7% Easy Easy 0.015474196582597383 0.01582781088607703 https://leetcode.com/problems/squares-of-a-sorted-array https://leetcode.com/problems/valid-palindrome
55 103 977 Binary Tree Zigzag Level Order Traversal Squares of a Sorted Array 48.3% 72.1% Medium Easy 0.015272005981326173 0.015474196582597383 https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal https://leetcode.com/problems/squares-of-a-sorted-array
56 153 103 Find Minimum in Rotated Sorted Array Binary Tree Zigzag Level Order Traversal 45.1% 48.3% Medium Medium 0.014939586916186732 0.015272005981326173 https://leetcode.com/problems/find-minimum-in-rotated-sorted-array https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
57 102 153 Binary Tree Level Order Traversal Find Minimum in Rotated Sorted Array 54.6% 45.1% Medium Medium 0.014477270588287548 0.014939586916186732 https://leetcode.com/problems/binary-tree-level-order-traversal https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
58 20 102 Valid Parentheses Binary Tree Level Order Traversal 39.0% 54.6% Easy Medium 0.014292491180025941 0.014477270588287548 https://leetcode.com/problems/valid-parentheses https://leetcode.com/problems/binary-tree-level-order-traversal
59 443 20 String Compression Valid Parentheses 41.3% 39.0% Easy Easy 0.01390843004613198 0.014292491180025941 https://leetcode.com/problems/string-compression https://leetcode.com/problems/valid-parentheses
60 141 443 Linked List Cycle String Compression 41.1% 41.3% Easy Easy 0.01390238743679306 0.01390843004613198 https://leetcode.com/problems/linked-list-cycle https://leetcode.com/problems/string-compression
61 56 141 Merge Intervals Linked List Cycle 39.3% 41.1% Medium Easy 0.013819532422258866 0.01390238743679306 https://leetcode.com/problems/merge-intervals https://leetcode.com/problems/linked-list-cycle
62 767 56 Reorganize String Merge Intervals 48.7% 39.3% Medium Medium 0.01329806830463147 0.013819532422258866 https://leetcode.com/problems/reorganize-string https://leetcode.com/problems/merge-intervals
63 665 767 Non-decreasing Array Reorganize String 19.5% 48.7% Easy Medium 0.013016779950191773 0.01329806830463147 https://leetcode.com/problems/non-decreasing-array https://leetcode.com/problems/reorganize-string
64 129 665 Sum Root to Leaf Numbers Non-decreasing Array 49.1% 19.5% Medium Easy 0.012739025777429757 0.013016779950191773 https://leetcode.com/problems/sum-root-to-leaf-numbers https://leetcode.com/problems/non-decreasing-array
65 213 129 House Robber II Sum Root to Leaf Numbers 36.5% 49.1% Medium Medium 0.012654392210497564 0.012739025777429757 https://leetcode.com/problems/house-robber-ii https://leetcode.com/problems/sum-root-to-leaf-numbers
66 287 213 Find the Duplicate Number House Robber II 55.5% 36.5% Medium Medium 0.012335682739188652 0.012654392210497564 https://leetcode.com/problems/find-the-duplicate-number https://leetcode.com/problems/house-robber-ii
67 445 287 Add Two Numbers II Find the Duplicate Number 54.5% 55.5% Medium Medium 0.01233061245747872 0.012335682739188652 https://leetcode.com/problems/add-two-numbers-ii https://leetcode.com/problems/find-the-duplicate-number
68 547 445 Friend Circles Add Two Numbers II 58.6% 54.5% Medium Medium 0.012228828639434596 0.01233061245747872 https://leetcode.com/problems/friend-circles https://leetcode.com/problems/add-two-numbers-ii
69 300 547 Longest Increasing Subsequence Friend Circles 42.6% 58.6% Medium Medium 0.011806512586989004 0.012228828639434596 https://leetcode.com/problems/longest-increasing-subsequence https://leetcode.com/problems/friend-circles
70 785 300 Is Graph Bipartite? Longest Increasing Subsequence 47.5% 42.6% Medium Medium 0.011236073266925854 0.011806512586989004 https://leetcode.com/problems/is-graph-bipartite https://leetcode.com/problems/longest-increasing-subsequence
71 207 785 Course Schedule Is Graph Bipartite? 43.1% 47.5% Medium Medium 0.01113459480911671 0.011236073266925854 https://leetcode.com/problems/course-schedule https://leetcode.com/problems/is-graph-bipartite
72 160 207 Intersection of Two Linked Lists Course Schedule 40.6% 43.1% Easy Medium 0.010994491398666248 0.01113459480911671 https://leetcode.com/problems/intersection-of-two-linked-lists https://leetcode.com/problems/course-schedule
73 662 160 Maximum Width of Binary Tree Intersection of Two Linked Lists 41.0% 40.6% Medium Easy 0.010790501245113902 0.010994491398666248 https://leetcode.com/problems/maximum-width-of-binary-tree https://leetcode.com/problems/intersection-of-two-linked-lists
74 236 662 Lowest Common Ancestor of a Binary Tree Maximum Width of Binary Tree 45.7% 41.0% Medium Medium 0.010575891759058162 0.010790501245113902 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree https://leetcode.com/problems/maximum-width-of-binary-tree
75 211 236 Add and Search Word - Data structure design Lowest Common Ancestor of a Binary Tree 38.1% 45.7% Medium Medium 0.010438508143923443 0.010575891759058162 https://leetcode.com/problems/add-and-search-word-data-structure-design https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
76 25 211 Reverse Nodes in k-Group Add and Search Word - Data structure design 42.1% 38.1% Hard Medium 0.01021198560502829 0.010438508143923443 https://leetcode.com/problems/reverse-nodes-in-k-group https://leetcode.com/problems/add-and-search-word-data-structure-design
77 1 25 Two Sum Reverse Nodes in k-Group 45.6% 42.1% Easy Hard 0.010006414028595919 0.01021198560502829 https://leetcode.com/problems/two-sum https://leetcode.com/problems/reverse-nodes-in-k-group
78 279 1 Perfect Squares Two Sum 47.4% 45.6% Medium Easy 0.009216655104924008 0.010006414028595919 https://leetcode.com/problems/perfect-squares https://leetcode.com/problems/two-sum
79 32 279 Longest Valid Parentheses Perfect Squares 28.4% 47.4% Hard Medium 0.009111680351255843 0.009216655104924008 https://leetcode.com/problems/longest-valid-parentheses https://leetcode.com/problems/perfect-squares
80 208 32 Implement Trie (Prefix Tree) Longest Valid Parentheses 49.4% 28.4% Medium Hard 0.009105457856626612 0.009111680351255843 https://leetcode.com/problems/implement-trie-prefix-tree https://leetcode.com/problems/longest-valid-parentheses
81 189 208 Rotate Array Implement Trie (Prefix Tree) 34.7% 49.4% Easy Medium 0.00904437880665999 0.009105457856626612 https://leetcode.com/problems/rotate-array https://leetcode.com/problems/implement-trie-prefix-tree
82 295 189 Find Median from Data Stream Rotate Array 44.3% 34.7% Hard Easy 0.00899893586856953 0.00904437880665999 https://leetcode.com/problems/find-median-from-data-stream https://leetcode.com/problems/rotate-array
83 28 295 Implement strStr() Find Median from Data Stream 34.5% 44.3% Easy Hard 0.008850485542574548 0.00899893586856953 https://leetcode.com/problems/implement-strstr https://leetcode.com/problems/find-median-from-data-stream
84 4 28 Median of Two Sorted Arrays Implement strStr() 29.6% 34.5% Hard Easy 0.008754068159914991 0.008850485542574548 https://leetcode.com/problems/median-of-two-sorted-arrays https://leetcode.com/problems/implement-strstr
85 139 4 Word Break Median of Two Sorted Arrays 40.1% 29.6% Medium Hard 0.008741314401573542 0.008754068159914991 https://leetcode.com/problems/word-break https://leetcode.com/problems/median-of-two-sorted-arrays
86 53 139 Maximum Subarray Word Break 46.5% 40.1% Easy Medium 0.008640295679602939 0.008741314401573542 https://leetcode.com/problems/maximum-subarray https://leetcode.com/problems/word-break
87 49 53 Group Anagrams Maximum Subarray 56.9% 46.5% Medium Easy 0.008538951314232168 0.008640295679602939 https://leetcode.com/problems/group-anagrams https://leetcode.com/problems/maximum-subarray
88 8 49 String to Integer (atoi) Group Anagrams 15.4% 56.9% Medium Medium 0.008513104762248265 0.008538951314232168 https://leetcode.com/problems/string-to-integer-atoi https://leetcode.com/problems/group-anagrams
89 328 8 Odd Even Linked List String to Integer (atoi) 55.7% 15.4% Medium Medium 0.00764383618585562 0.008513104762248265 https://leetcode.com/problems/odd-even-linked-list https://leetcode.com/problems/string-to-integer-atoi
90 994 328 Rotting Oranges Odd Even Linked List 49.2% 55.7% Medium Medium 0.007630712341163886 0.00764383618585562 https://leetcode.com/problems/rotting-oranges https://leetcode.com/problems/odd-even-linked-list
91 176 994 Second Highest Salary Rotting Oranges 31.6% 49.2% Easy Medium 0.007393749024938284 0.007630712341163886 https://leetcode.com/problems/second-highest-salary https://leetcode.com/problems/rotting-oranges
92 344 176 Reverse String Second Highest Salary 68.5% 31.6% Easy Easy 0.00734157796234515 0.007393749024938284 https://leetcode.com/problems/reverse-string https://leetcode.com/problems/second-highest-salary
93 66 344 Plus One Reverse String 43.0% 68.5% Easy Easy 0.007324847595025828 0.00734157796234515 https://leetcode.com/problems/plus-one https://leetcode.com/problems/reverse-string
94 204 66 Count Primes Plus One 31.5% 43.0% Easy Easy 0.007072165261362441 0.007324847595025828 https://leetcode.com/problems/count-primes https://leetcode.com/problems/plus-one
95 142 204 Linked List Cycle II Count Primes 37.3% 31.5% Medium Easy 0.006564934131150057 0.007072165261362441 https://leetcode.com/problems/linked-list-cycle-ii https://leetcode.com/problems/count-primes
96 41 142 First Missing Positive Linked List Cycle II 32.0% 37.3% Hard Medium 0.0064113058208121855 0.006564934131150057 https://leetcode.com/problems/first-missing-positive https://leetcode.com/problems/linked-list-cycle-ii
97 83 41 Remove Duplicates from Sorted List First Missing Positive 45.4% 32.0% Easy Hard 0.006353261522609498 0.0064113058208121855 https://leetcode.com/problems/remove-duplicates-from-sorted-list https://leetcode.com/problems/first-missing-positive
98 202 83 Happy Number Remove Duplicates from Sorted List 50.4% 45.4% Easy Easy 0.006266666286010046 0.006353261522609498 https://leetcode.com/problems/happy-number https://leetcode.com/problems/remove-duplicates-from-sorted-list
99 76 202 Minimum Window Substring Happy Number 34.6% 50.4% Hard Easy 0.006231520398723243 0.006266666286010046 https://leetcode.com/problems/minimum-window-substring https://leetcode.com/problems/happy-number
100 24 76 Swap Nodes in Pairs Minimum Window Substring 50.4% 34.6% Medium Hard 0.0062218275061505365 0.006231520398723243 https://leetcode.com/problems/swap-nodes-in-pairs https://leetcode.com/problems/minimum-window-substring
101 347 24 Top K Frequent Elements Swap Nodes in Pairs 61.2% 50.4% Medium Medium 0.005929457040438874 0.0062218275061505365 https://leetcode.com/problems/top-k-frequent-elements https://leetcode.com/problems/swap-nodes-in-pairs
102 973 347 K Closest Points to Origin Top K Frequent Elements 63.8% 61.2% Medium Medium 0.005773688094426333 0.005929457040438874 https://leetcode.com/problems/k-closest-points-to-origin https://leetcode.com/problems/top-k-frequent-elements
103 39 973 Combination Sum K Closest Points to Origin 56.1% 63.8% Medium Medium 0.005715934396440999 0.005773688094426333 https://leetcode.com/problems/combination-sum https://leetcode.com/problems/k-closest-points-to-origin
104 21 39 Merge Two Sorted Lists Combination Sum 53.5% 56.1% Easy Medium 0.005067007800877041 0.005715934396440999 https://leetcode.com/problems/merge-two-sorted-lists https://leetcode.com/problems/combination-sum
105 75 21 Sort Colors Merge Two Sorted Lists 47.3% 53.5% Medium Easy 0.004992521603120986 0.005067007800877041 https://leetcode.com/problems/sort-colors https://leetcode.com/problems/merge-two-sorted-lists
106 15 75 3Sum Sort Colors 26.8% 47.3% Medium Medium 0.004940992758742591 0.004992521603120986 https://leetcode.com/problems/3sum https://leetcode.com/problems/sort-colors
107 155 15 Min Stack 3Sum 44.5% 26.8% Easy Medium 0.00474891074128171 0.004940992758742591 https://leetcode.com/problems/min-stack https://leetcode.com/problems/3sum
108 42 155 Trapping Rain Water Min Stack 48.9% 44.5% Hard Easy 0.004350670338744988 0.00474891074128171 https://leetcode.com/problems/trapping-rain-water https://leetcode.com/problems/min-stack
109 322 42 Coin Change Trapping Rain Water 35.5% 48.9% Medium Hard 0.004029826126500844 0.004350670338744988 https://leetcode.com/problems/coin-change https://leetcode.com/problems/trapping-rain-water
110 198 322 House Robber Coin Change 42.0% 35.5% Easy Medium 0.0037576371128333645 0.004029826126500844 https://leetcode.com/problems/house-robber https://leetcode.com/problems/coin-change
111 78 198 Subsets House Robber 62.0% 42.0% Medium Easy 0.00368765975195334 0.0037576371128333645 https://leetcode.com/problems/subsets https://leetcode.com/problems/house-robber
112 14 78 Longest Common Prefix Subsets 35.4% 62.0% Easy Medium 0.003320331762984143 0.00368765975195334 https://leetcode.com/problems/longest-common-prefix https://leetcode.com/problems/subsets
113 50 14 Pow(x;n) Longest Common Prefix 30.3% 35.4% Medium Easy 0.0031510424503886844 0.003320331762984143 https://leetcode.com/problems/powx-n https://leetcode.com/problems/longest-common-prefix
114 88 50 Merge Sorted Array Pow(x;n) 39.4% 30.3% Easy Medium 0.0030102370714243072 0.0031510424503886844 https://leetcode.com/problems/merge-sorted-array https://leetcode.com/problems/powx-n
115 98 88 Validate Binary Search Tree Merge Sorted Array 27.8% 39.4% Medium Easy 0.002943776044013381 0.0030102370714243072 https://leetcode.com/problems/validate-binary-search-tree https://leetcode.com/problems/merge-sorted-array
116 140 98 Word Break II Validate Binary Search Tree 32.6% 27.8% Hard Medium 0.0027070942357783584 0.002943776044013381 https://leetcode.com/problems/word-break-ii https://leetcode.com/problems/validate-binary-search-tree
117 26 140 Remove Duplicates from Sorted Array Word Break II 45.1% 32.6% Easy Hard 0.0019513153174351963 0.0027070942357783584 https://leetcode.com/problems/remove-duplicates-from-sorted-array https://leetcode.com/problems/word-break-ii
118 2 26 Add Two Numbers Remove Duplicates from Sorted Array 33.9% 45.1% Medium Easy 0.0016886191111440908 0.0019513153174351963 https://leetcode.com/problems/add-two-numbers https://leetcode.com/problems/remove-duplicates-from-sorted-array
119 2 Add Two Numbers 33.9% Medium 0.0016886191111440908 https://leetcode.com/problems/add-two-numbers