ID,Title,Acceptance,Difficulty,Frequency,Leetcode Question Link
138,Copy List with Random Pointer,36.4%,Medium,2.9916072330367776, https://leetcode.com/problems/copy-list-with-random-pointer
146,LRU Cache,33.2%,Medium,2.88011930741835, https://leetcode.com/problems/lru-cache
1396,Design Underground System,64.7%,Medium,2.7686313817999224, https://leetcode.com/problems/design-underground-system
430,Flatten a Multilevel Doubly Linked List,55.1%,Medium,2.699294019942542, https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
200,Number of Islands,46.8%,Medium,2.5893928602940184, https://leetcode.com/problems/number-of-islands
445,Add Two Numbers II,54.5%,Medium,2.5005209232280814, https://leetcode.com/problems/add-two-numbers-ii
723,Candy Crush,69.2%,Medium,2.4433718804091535, https://leetcode.com/problems/candy-crush
394,Decode String,50.0%,Medium,2.4354178381724667, https://leetcode.com/problems/decode-string
582,Kill Process,60.8%,Medium,2.329004207705794, https://leetcode.com/problems/kill-process
1,Two Sum,45.6%,Easy,2.2663379529079926, https://leetcode.com/problems/two-sum
451,Sort Characters By Frequency,63.0%,Medium,2.214754567267123, https://leetcode.com/problems/sort-characters-by-frequency
2,Add Two Numbers,33.9%,Medium,2.2105161651535843, https://leetcode.com/problems/add-two-numbers
1169,Invalid Transactions,31.2%,Medium,2.1276788037634873, https://leetcode.com/problems/invalid-transactions
117,Populating Next Right Pointers in Each Node II,39.1%,Medium,2.118212486885331, https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
42,Trapping Rain Water,48.9%,Hard,2.0660776889450734, https://leetcode.com/problems/trapping-rain-water
20,Valid Parentheses,39.0%,Easy,2.0208637675689056, https://leetcode.com/problems/valid-parentheses
380,Insert Delete GetRandom O(1),47.5%,Medium,1.9093758419504783, https://leetcode.com/problems/insert-delete-getrandom-o1
155,Min Stack,44.5%,Easy,1.8753356079546997, https://leetcode.com/problems/min-stack
98,Validate Binary Search Tree,27.8%,Medium,1.8280334735241495, https://leetcode.com/problems/validate-binary-search-tree
253,Meeting Rooms II,45.7%,Medium,1.7748254445172882, https://leetcode.com/problems/meeting-rooms-ii
121,Best Time to Buy and Sell Stock,50.5%,Easy,1.7316498584399342, https://leetcode.com/problems/best-time-to-buy-and-sell-stock
387,First Unique Character in a String,53.4%,Easy,1.6717206372907538, https://leetcode.com/problems/first-unique-character-in-a-string
56,Merge Intervals,39.3%,Medium,1.6344853036753995, https://leetcode.com/problems/merge-intervals
214,Shortest Palindrome,29.8%,Hard,1.628304607593452, https://leetcode.com/problems/shortest-palindrome
1274,Number of Ships in a Rectangle,66.3%,Hard,1.6253239794553143, https://leetcode.com/problems/number-of-ships-in-a-rectangle
1029,Two City Scheduling,56.1%,Easy,1.6062408497394156, https://leetcode.com/problems/two-city-scheduling
283,Move Zeroes,57.8%,Easy,1.5700380214242422, https://leetcode.com/problems/move-zeroes
116,Populating Next Right Pointers in Each Node,45.2%,Medium,1.5282163044390433, https://leetcode.com/problems/populating-next-right-pointers-in-each-node
390,Elimination Game,44.5%,Medium,1.435519307483543, https://leetcode.com/problems/elimination-game
3,Longest Substring Without Repeating Characters,30.4%,Medium,1.3959826812294072, https://leetcode.com/problems/longest-substring-without-repeating-characters
23,Merge k Sorted Lists,40.2%,Hard,1.390362038117481, https://leetcode.com/problems/merge-k-sorted-lists
1209,Remove All Adjacent Duplicates in String II,56.9%,Medium,1.2788741124990537, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
463,Island Perimeter,65.7%,Easy,1.245274068255333, https://leetcode.com/problems/island-perimeter
242,Valid Anagram,56.9%,Easy,1.1337861426369056, https://leetcode.com/problems/valid-anagram
269,Alien Dictionary,33.3%,Hard,1.099252698552309, https://leetcode.com/problems/alien-dictionary
114,Flatten Binary Tree to Linked List,49.3%,Medium,1.0986122886681096, https://leetcode.com/problems/flatten-binary-tree-to-linked-list
139,Word Break,40.1%,Medium,1.0903842081598691, https://leetcode.com/problems/word-break
4,Median of Two Sorted Arrays,29.6%,Hard,1.0617282987657621, https://leetcode.com/problems/median-of-two-sorted-arrays
271,Encode and Decode Strings,31.5%,Medium,1.0528027526368156, https://leetcode.com/problems/encode-and-decode-strings
33,Search in Rotated Sorted Array,34.5%,Medium,1.0520357838367607, https://leetcode.com/problems/search-in-rotated-sorted-array
12,Integer to Roman,55.1%,Medium,1.0302007147147747, https://leetcode.com/problems/integer-to-roman
206,Reverse Linked List,62.5%,Easy,1.0194232916385328, https://leetcode.com/problems/reverse-linked-list
301,Remove Invalid Parentheses,43.3%,Hard,1.0163915378390016, https://leetcode.com/problems/remove-invalid-parentheses
21,Merge Two Sorted Lists,53.5%,Easy,0.9730025194287449, https://leetcode.com/problems/merge-two-sorted-lists
7,Reverse Integer,25.8%,Easy,0.9636538129651142, https://leetcode.com/problems/reverse-integer
69,Sqrt(x),33.9%,Easy,0.9425416082510271, https://leetcode.com/problems/sqrtx
628,Maximum Product of Three Numbers,47.1%,Easy,0.9179560111932162, https://leetcode.com/problems/maximum-product-of-three-numbers
15,3Sum,26.8%,Medium,0.9115464188984339, https://leetcode.com/problems/3sum
346,Moving Average from Data Stream,70.9%,Easy,0.893574774039618, https://leetcode.com/problems/moving-average-from-data-stream
105,Construct Binary Tree from Preorder and Inorder Traversal,48.8%,Medium,0.856966942738701, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
554,Brick Wall,50.0%,Medium,0.8487112881843506, https://leetcode.com/problems/brick-wall
460,LFU Cache,34.2%,Hard,0.8452742509276767, https://leetcode.com/problems/lfu-cache
53,Maximum Subarray,46.5%,Easy,0.8338660450189812, https://leetcode.com/problems/maximum-subarray
692,Top K Frequent Words,51.8%,Medium,0.8219759071619612, https://leetcode.com/problems/top-k-frequent-words
5,Longest Palindromic Substring,29.5%,Medium,0.8154521489335768, https://leetcode.com/problems/longest-palindromic-substring
239,Sliding Window Maximum,43.0%,Hard,0.8060721931479718, https://leetcode.com/problems/sliding-window-maximum
295,Find Median from Data Stream,44.3%,Hard,0.7864008043695105, https://leetcode.com/problems/find-median-from-data-stream
62,Unique Paths,54.1%,Medium,0.7819517612115802, https://leetcode.com/problems/unique-paths
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,0.7585897524597297, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
54,Spiral Matrix,34.1%,Medium,0.7505169147393441, https://leetcode.com/problems/spiral-matrix
273,Integer to English Words,27.1%,Hard,0.7404748586772619, https://leetcode.com/problems/integer-to-english-words
611,Valid Triangle Number,48.4%,Medium,0.7357067949787413, https://leetcode.com/problems/valid-triangle-number
160,Intersection of Two Linked Lists,40.6%,Easy,0.7095335003665627, https://leetcode.com/problems/intersection-of-two-linked-lists
332,Reconstruct Itinerary,36.7%,Medium,0.6934933810134637, https://leetcode.com/problems/reconstruct-itinerary
987,Vertical Order Traversal of a Binary Tree,36.6%,Medium,0.6653429641530142, https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
173,Binary Search Tree Iterator,56.6%,Medium,0.6626352388032212, https://leetcode.com/problems/binary-search-tree-iterator
10,Regular Expression Matching,26.8%,Hard,0.6273817982285409, https://leetcode.com/problems/regular-expression-matching
122,Best Time to Buy and Sell Stock II,57.0%,Easy,0.620692101344523, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
49,Group Anagrams,56.9%,Medium,0.6192590691619644, https://leetcode.com/problems/group-anagrams
797,All Paths From Source to Target,77.9%,Medium,0.6133054173259477, https://leetcode.com/problems/all-paths-from-source-to-target
102,Binary Tree Level Order Traversal,54.6%,Medium,0.598984719563006, https://leetcode.com/problems/binary-tree-level-order-traversal
127,Word Ladder,29.6%,Medium,0.5839478885949534, https://leetcode.com/problems/word-ladder
443,String Compression,41.3%,Easy,0.5809942743419542, https://leetcode.com/problems/string-compression
88,Merge Sorted Array,39.4%,Easy,0.571985667665598, https://leetcode.com/problems/merge-sorted-array
314,Binary Tree Vertical Order Traversal,45.3%,Medium,0.5697543914580919, https://leetcode.com/problems/binary-tree-vertical-order-traversal
384,Shuffle an Array,52.8%,Medium,0.5613156759328372, https://leetcode.com/problems/shuffle-an-array
235,Lowest Common Ancestor of a Binary Search Tree,49.9%,Easy,0.5565464902832835, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
322,Coin Change,35.5%,Medium,0.5515361644679891, https://leetcode.com/problems/coin-change
78,Subsets,62.0%,Medium,0.5447142447216986, https://leetcode.com/problems/subsets
1472,Design Browser History,64.6%,Medium,0.5365781198684054, https://leetcode.com/problems/design-browser-history
399,Evaluate Division,51.6%,Medium,0.5332723866487983, https://leetcode.com/problems/evaluate-division
140,Word Break II,32.6%,Hard,0.5270660323324061, https://leetcode.com/problems/word-break-ii
72,Edit Distance,44.8%,Hard,0.4973447790261514, https://leetcode.com/problems/edit-distance
199,Binary Tree Right Side View,54.1%,Medium,0.48753322716717645, https://leetcode.com/problems/binary-tree-right-side-view
662,Maximum Width of Binary Tree,41.0%,Medium,0.4763908360365309, https://leetcode.com/problems/maximum-width-of-binary-tree
759,Employee Free Time,66.3%,Hard,0.4763656648250958, https://leetcode.com/problems/employee-free-time
84,Largest Rectangle in Histogram,35.2%,Hard,0.47303377627978027, https://leetcode.com/problems/largest-rectangle-in-histogram
8,String to Integer (atoi),15.4%,Medium,0.4660655155190756, https://leetcode.com/problems/string-to-integer-atoi
128,Longest Consecutive Sequence,45.1%,Hard,0.4586585434961303, https://leetcode.com/problems/longest-consecutive-sequence
41,First Missing Positive,32.0%,Hard,0.4577280774627401, https://leetcode.com/problems/first-missing-positive
162,Find Peak Element,43.3%,Medium,0.4542122961558814, https://leetcode.com/problems/find-peak-element
739,Daily Temperatures,63.3%,Medium,0.4492773337550074, https://leetcode.com/problems/daily-temperatures
328,Odd Even Linked List,55.7%,Medium,0.44107885769261934, https://leetcode.com/problems/odd-even-linked-list
126,Word Ladder II,22.1%,Hard,0.43777160210436394, https://leetcode.com/problems/word-ladder-ii
50,Pow(x;n),30.3%,Medium,0.4274653596092084, https://leetcode.com/problems/powx-n
535,Encode and Decode TinyURL,79.9%,Medium,0.4221173972425086, https://leetcode.com/problems/encode-and-decode-tinyurl
347,Top K Frequent Elements,61.2%,Medium,0.4113452979974663, https://leetcode.com/problems/top-k-frequent-elements
234,Palindrome Linked List,39.3%,Easy,0.40610862095331074, https://leetcode.com/problems/palindrome-linked-list
488,Zuma Game,39.9%,Hard,0.3999856423435388, https://leetcode.com/problems/zuma-game
118,Pascal's Triangle,52.5%,Easy,0.3983282893707838, https://leetcode.com/problems/pascals-triangle
31,Next Permutation,32.6%,Medium,0.3965135773768611, https://leetcode.com/problems/next-permutation
11,Container With Most Water,50.8%,Medium,0.3920877580285051, https://leetcode.com/problems/container-with-most-water
496,Next Greater Element I,63.8%,Easy,0.39096401741736453, https://leetcode.com/problems/next-greater-element-i
171,Excel Sheet Column Number,55.9%,Easy,0.3891015365515057, https://leetcode.com/problems/excel-sheet-column-number
9,Palindrome Number,48.4%,Easy,0.3889248192216875, https://leetcode.com/problems/palindrome-number
1047,Remove All Adjacent Duplicates In String,68.6%,Easy,0.38744859425846845, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
34,Find First and Last Position of Element in Sorted Array,36.2%,Medium,0.3847852205330874, https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
349,Intersection of Two Arrays,62.5%,Easy,0.3823387899165356, https://leetcode.com/problems/intersection-of-two-arrays
311,Sparse Matrix Multiplication,61.9%,Medium,0.37117603462953225, https://leetcode.com/problems/sparse-matrix-multiplication
79,Word Search,35.6%,Medium,0.355241060704579, https://leetcode.com/problems/word-search
44,Wildcard Matching,24.7%,Hard,0.34881383996175425, https://leetcode.com/problems/wildcard-matching
362,Design Hit Counter,63.7%,Medium,0.34451909789108437, https://leetcode.com/problems/design-hit-counter
230,Kth Smallest Element in a BST,60.2%,Medium,0.3413184800841155, https://leetcode.com/problems/kth-smallest-element-in-a-bst
124,Binary Tree Maximum Path Sum,34.3%,Hard,0.33702679091242466, https://leetcode.com/problems/binary-tree-maximum-path-sum
268,Missing Number,51.7%,Easy,0.3338128467131867, https://leetcode.com/problems/missing-number
64,Minimum Path Sum,54.5%,Medium,0.3317195432884912, https://leetcode.com/problems/minimum-path-sum
215,Kth Largest Element in an Array,55.4%,Medium,0.3300278321382259, https://leetcode.com/problems/kth-largest-element-in-an-array
353,Design Snake Game,34.2%,Medium,0.32931497055013925, https://leetcode.com/problems/design-snake-game
46,Permutations,63.5%,Medium,0.32304289477761106, https://leetcode.com/problems/permutations
221,Maximal Square,37.7%,Medium,0.3057737602882765, https://leetcode.com/problems/maximal-square
17,Letter Combinations of a Phone Number,46.8%,Medium,0.30552675752628056, https://leetcode.com/problems/letter-combinations-of-a-phone-number
205,Isomorphic Strings,39.8%,Easy,0.30101800626340847, https://leetcode.com/problems/isomorphic-strings
75,Sort Colors,47.3%,Medium,0.2778743740687611, https://leetcode.com/problems/sort-colors
695,Max Area of Island,62.7%,Medium,0.2770125235595406, https://leetcode.com/problems/max-area-of-island
136,Single Number,65.5%,Easy,0.27522969174444734, https://leetcode.com/problems/single-number
22,Generate Parentheses,62.7%,Medium,0.274428104404814, https://leetcode.com/problems/generate-parentheses
229,Majority Element II,35.6%,Medium,0.2683771567744578, https://leetcode.com/problems/majority-element-ii
503,Next Greater Element II,56.5%,Medium,0.26590939545778536, https://leetcode.com/problems/next-greater-element-ii
209,Minimum Size Subarray Sum,38.2%,Medium,0.26557641498817536, https://leetcode.com/problems/minimum-size-subarray-sum
694,Number of Distinct Islands,56.0%,Medium,0.26236426446749106, https://leetcode.com/problems/number-of-distinct-islands
422,Valid Word Square,37.7%,Easy,0.2578291093020998, https://leetcode.com/problems/valid-word-square
252,Meeting Rooms,54.6%,Easy,0.2539330877151399, https://leetcode.com/problems/meeting-rooms
286,Walls and Gates,54.5%,Medium,0.2531417471996048, https://leetcode.com/problems/walls-and-gates
48,Rotate Image,56.7%,Medium,0.2525907526405108, https://leetcode.com/problems/rotate-image
821,Shortest Distance to a Character,66.9%,Easy,0.24320527953164725, https://leetcode.com/problems/shortest-distance-to-a-character
240,Search a 2D Matrix II,43.2%,Medium,0.24218097481422138, https://leetcode.com/problems/search-a-2d-matrix-ii
716,Max Stack,42.6%,Easy,0.24108416003009112, https://leetcode.com/problems/max-stack
85,Maximal Rectangle,37.7%,Hard,0.2404427185770219, https://leetcode.com/problems/maximal-rectangle
63,Unique Paths II,34.6%,Medium,0.2348446787507317, https://leetcode.com/problems/unique-paths-ii
76,Minimum Window Substring,34.6%,Hard,0.23436338587849237, https://leetcode.com/problems/minimum-window-substring
572,Subtree of Another Tree,44.1%,Easy,0.23328636844031944, https://leetcode.com/problems/subtree-of-another-tree
151,Reverse Words in a String,21.9%,Medium,0.23114347137583938, https://leetcode.com/problems/reverse-words-in-a-string
412,Fizz Buzz,62.3%,Easy,0.23023806672070082, https://leetcode.com/problems/fizz-buzz
652,Find Duplicate Subtrees,50.2%,Medium,0.23015822831359434, https://leetcode.com/problems/find-duplicate-subtrees
924,Minimize Malware Spread,42.0%,Hard,0.22884157242884745, https://leetcode.com/problems/minimize-malware-spread
91,Decode Ways,24.7%,Medium,0.2254754606491885, https://leetcode.com/problems/decode-ways
238,Product of Array Except Self,60.1%,Medium,0.22477655808124566, https://leetcode.com/problems/product-of-array-except-self
1223,Dice Roll Simulation,45.6%,Medium,0.2166710368085923, https://leetcode.com/problems/dice-roll-simulation
560,Subarray Sum Equals K,43.9%,Medium,0.21610695147886494, https://leetcode.com/problems/subarray-sum-equals-k
442,Find All Duplicates in an Array,67.8%,Medium,0.21334822899856468, https://leetcode.com/problems/find-all-duplicates-in-an-array
6,ZigZag Conversion,36.3%,Medium,0.21040551802808702, https://leetcode.com/problems/zigzag-conversion
287,Find the Duplicate Number,55.5%,Medium,0.20950804936372536, https://leetcode.com/problems/find-the-duplicate-number
315,Count of Smaller Numbers After Self,41.5%,Hard,0.20806843787404064, https://leetcode.com/problems/count-of-smaller-numbers-after-self
232,Implement Queue using Stacks,49.6%,Easy,0.20615437352136948, https://leetcode.com/problems/implement-queue-using-stacks
208,Implement Trie (Prefix Tree),49.4%,Medium,0.20593713931590088, https://leetcode.com/problems/implement-trie-prefix-tree
16,3Sum Closest,46.0%,Medium,0.2058081329110988, https://leetcode.com/problems/3sum-closest
513,Find Bottom Left Tree Value,61.5%,Medium,0.20328581918106378, https://leetcode.com/problems/find-bottom-left-tree-value
543,Diameter of Binary Tree,48.4%,Easy,0.2027481163433401, https://leetcode.com/problems/diameter-of-binary-tree
836,Rectangle Overlap,48.6%,Easy,0.19944370144318244, https://leetcode.com/problems/rectangle-overlap
13,Roman to Integer,55.7%,Easy,0.19870163716069, https://leetcode.com/problems/roman-to-integer
510,Inorder Successor in BST II,58.0%,Medium,0.19714257713870645, https://leetcode.com/problems/inorder-successor-in-bst-ii
329,Longest Increasing Path in a Matrix,43.4%,Hard,0.1954447382872236, https://leetcode.com/problems/longest-increasing-path-in-a-matrix
1060,Missing Element in Sorted Array,54.5%,Medium,0.1950605825713844, https://leetcode.com/problems/missing-element-in-sorted-array
94,Binary Tree Inorder Traversal,63.3%,Medium,0.1948180665300998, https://leetcode.com/problems/binary-tree-inorder-traversal
120,Triangle,44.2%,Medium,0.19325424809414601, https://leetcode.com/problems/triangle
92,Reverse Linked List II,38.8%,Medium,0.19248981022320735, https://leetcode.com/problems/reverse-linked-list-ii
153,Find Minimum in Rotated Sorted Array,45.1%,Medium,0.191995528322351, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
207,Course Schedule,43.1%,Medium,0.19082802919680183, https://leetcode.com/problems/course-schedule
402,Remove K Digits,28.4%,Medium,0.18924199963852842, https://leetcode.com/problems/remove-k-digits
658,Find K Closest Elements,40.9%,Medium,0.18663941293482042, https://leetcode.com/problems/find-k-closest-elements
518,Coin Change 2,50.2%,Medium,0.18373876827436816, https://leetcode.com/problems/coin-change-2
889,Construct Binary Tree from Preorder and Postorder Traversal,66.2%,Medium,0.18315872720701828, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
70,Climbing Stairs,47.8%,Easy,0.1820258821345787, https://leetcode.com/problems/climbing-stairs
226,Invert Binary Tree,65.0%,Easy,0.18135450553395235, https://leetcode.com/problems/invert-binary-tree
19,Remove Nth Node From End of List,35.2%,Medium,0.17998225417577363, https://leetcode.com/problems/remove-nth-node-from-end-of-list
203,Remove Linked List Elements,38.6%,Easy,0.17950766176348673, https://leetcode.com/problems/remove-linked-list-elements
1244,Design A Leaderboard,60.7%,Medium,0.17763094743610072, https://leetcode.com/problems/design-a-leaderboard
202,Happy Number,50.4%,Easy,0.17408932588103054, https://leetcode.com/problems/happy-number
1249,Minimum Remove to Make Valid Parentheses,62.5%,Medium,0.17148553745267525, https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
97,Interleaving String,31.5%,Hard,0.17070662167607636, https://leetcode.com/problems/interleaving-string
344,Reverse String,68.5%,Easy,0.16907996884887766, https://leetcode.com/problems/reverse-string
971,Flip Binary Tree To Match Preorder Traversal,45.7%,Medium,0.1670540846631662, https://leetcode.com/problems/flip-binary-tree-to-match-preorder-traversal
529,Minesweeper,59.1%,Medium,0.16635770580494058, https://leetcode.com/problems/minesweeper
727,Minimum Window Subsequence,41.8%,Hard,0.15970111035790735, https://leetcode.com/problems/minimum-window-subsequence
101,Symmetric Tree,46.8%,Easy,0.15457702816029933, https://leetcode.com/problems/symmetric-tree
414,Third Maximum Number,30.5%,Easy,0.15407631103237035, https://leetcode.com/problems/third-maximum-number
417,Pacific Atlantic Water Flow,41.1%,Medium,0.15226921172755276, https://leetcode.com/problems/pacific-atlantic-water-flow
470,Implement Rand10() Using Rand7(),46.3%,Medium,0.15154989812720093, https://leetcode.com/problems/implement-rand10-using-rand7
386,Lexicographical Numbers,51.6%,Medium,0.14854271203296188, https://leetcode.com/problems/lexicographical-numbers
504,Base 7,46.2%,Easy,0.14612656455721032, https://leetcode.com/problems/base-7
24,Swap Nodes in Pairs,50.4%,Medium,0.14499222491243005, https://leetcode.com/problems/swap-nodes-in-pairs
237,Delete Node in a Linked List,63.8%,Easy,0.14499031042859406, https://leetcode.com/problems/delete-node-in-a-linked-list
852,Peak Index in a Mountain Array,71.6%,Easy,0.1445812288111076, https://leetcode.com/problems/peak-index-in-a-mountain-array
415,Add Strings,47.5%,Easy,0.14343082219506165, https://leetcode.com/problems/add-strings
426,Convert Binary Search Tree to Sorted Doubly Linked List,59.1%,Medium,0.14252878462127264, https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
348,Design Tic-Tac-Toe,54.3%,Medium,0.14252878462127264, https://leetcode.com/problems/design-tic-tac-toe
188,Best Time to Buy and Sell Stock IV,28.0%,Hard,0.1396533313293086, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
225,Implement Stack using Queues,45.1%,Easy,0.1390589799907463, https://leetcode.com/problems/implement-stack-using-queues
250,Count Univalue Subtrees,52.0%,Medium,0.13767409129953323, https://leetcode.com/problems/count-univalue-subtrees
71,Simplify Path,32.6%,Medium,0.13762137787604775, https://leetcode.com/problems/simplify-path
565,Array Nesting,55.5%,Medium,0.13762137787604775, https://leetcode.com/problems/array-nesting
397,Integer Replacement,32.9%,Medium,0.13720112151348504, https://leetcode.com/problems/integer-replacement
99,Recover Binary Search Tree,39.7%,Hard,0.1363765523041528, https://leetcode.com/problems/recover-binary-search-tree
81,Search in Rotated Sorted Array II,33.0%,Medium,0.13455967035008862, https://leetcode.com/problems/search-in-rotated-sorted-array-ii
678,Valid Parenthesis String,31.0%,Medium,0.13417736429600724, https://leetcode.com/problems/valid-parenthesis-string
125,Valid Palindrome,36.7%,Easy,0.13416684727631417, https://leetcode.com/problems/valid-palindrome
378,Kth Smallest Element in a Sorted Matrix,54.3%,Medium,0.13397014948713715, https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
1347,Minimum Number of Steps to Make Two Strings Anagram,74.7%,Medium,0.13375498122243565, https://leetcode.com/problems/minimum-number-of-steps-to-make-two-strings-anagram
123,Best Time to Buy and Sell Stock III,37.5%,Hard,0.12991500860874672, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
359,Logger Rate Limiter,70.8%,Easy,0.1248502028794759, https://leetcode.com/problems/logger-rate-limiter
109,Convert Sorted List to Binary Search Tree,47.7%,Medium,0.12302181451266285, https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
228,Summary Ranges,39.5%,Medium,0.1207191114343526, https://leetcode.com/problems/summary-ranges
404,Sum of Left Leaves,50.9%,Easy,0.1193071581156751, https://leetcode.com/problems/sum-of-left-leaves
341,Flatten Nested List Iterator,52.9%,Medium,0.11879160861126825, https://leetcode.com/problems/flatten-nested-list-iterator
1054,Distant Barcodes,43.2%,Medium,0.11855973472455572, https://leetcode.com/problems/distant-barcodes
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.11648551004070631, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
435,Non-overlapping Intervals,42.9%,Medium,0.1158164666843426, https://leetcode.com/problems/non-overlapping-intervals
61,Rotate List,30.0%,Medium,0.11528615545779625, https://leetcode.com/problems/rotate-list
28,Implement strStr(),34.5%,Easy,0.11289821506454988, https://leetcode.com/problems/implement-strstr
721,Accounts Merge,48.8%,Medium,0.11257939199174459, https://leetcode.com/problems/accounts-merge
708,Insert into a Sorted Circular Linked List,31.6%,Medium,0.11219725014953141, https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
532,K-diff Pairs in an Array,31.6%,Easy,0.111723209445655, https://leetcode.com/problems/k-diff-pairs-in-an-array
82,Remove Duplicates from Sorted List II,36.8%,Medium,0.1110882064011508, https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii
1188,Design Bounded Blocking Queue,70.5%,Medium,0.11030454201470608, https://leetcode.com/problems/design-bounded-blocking-queue
198,House Robber,42.0%,Easy,0.10785152815546674, https://leetcode.com/problems/house-robber
108,Convert Sorted Array to Binary Search Tree,57.9%,Easy,0.10686314554236129, https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
112,Path Sum,41.2%,Easy,0.10531937947649221, https://leetcode.com/problems/path-sum
26,Remove Duplicates from Sorted Array,45.1%,Easy,0.10424167132184688, https://leetcode.com/problems/remove-duplicates-from-sorted-array
289,Game of Life,54.5%,Medium,0.10365526175211173, https://leetcode.com/problems/game-of-life
336,Palindrome Pairs,33.7%,Hard,0.10259559233600947, https://leetcode.com/problems/palindrome-pairs
141,Linked List Cycle,41.1%,Easy,0.10063328674952829, https://leetcode.com/problems/linked-list-cycle
90,Subsets II,47.1%,Medium,0.09830555874512009, https://leetcode.com/problems/subsets-ii
642,Design Search Autocomplete System,44.7%,Hard,0.09500811062818718, https://leetcode.com/problems/design-search-autocomplete-system
567,Permutation in String,44.4%,Medium,0.08995633353390375, https://leetcode.com/problems/permutation-in-string
285,Inorder Successor in BST,40.4%,Medium,0.08649364464568089, https://leetcode.com/problems/inorder-successor-in-bst
991,Broken Calculator,45.6%,Medium,0.08515780834030685, https://leetcode.com/problems/broken-calculator
131,Palindrome Partitioning,47.5%,Medium,0.08388550716227433, https://leetcode.com/problems/palindrome-partitioning
297,Serialize and Deserialize Binary Tree,47.5%,Hard,0.0834242216674795, https://leetcode.com/problems/serialize-and-deserialize-binary-tree
204,Count Primes,31.5%,Easy,0.08336741437414971, https://leetcode.com/problems/count-primes
857,Minimum Cost to Hire K Workers,49.6%,Hard,0.08320805808821628, https://leetcode.com/problems/minimum-cost-to-hire-k-workers
557,Reverse Words in a String III,69.8%,Easy,0.0828837318214325, https://leetcode.com/problems/reverse-words-in-a-string-iii
813,Largest Sum of Averages,49.9%,Medium,0.08201315166083516, https://leetcode.com/problems/largest-sum-of-averages
737,Sentence Similarity II,45.8%,Medium,0.08167803101426718, https://leetcode.com/problems/sentence-similarity-ii
74,Search a 2D Matrix,36.5%,Medium,0.08108897817576358, https://leetcode.com/problems/search-a-2d-matrix
448,Find All Numbers Disappeared in an Array,55.9%,Easy,0.08099584515633794, https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array
96,Unique Binary Search Trees,52.9%,Medium,0.08025695513016742, https://leetcode.com/problems/unique-binary-search-trees
673,Number of Longest Increasing Subsequence,35.7%,Medium,0.08025695513016742, https://leetcode.com/problems/number-of-longest-increasing-subsequence
303,Range Sum Query - Immutable,44.7%,Easy,0.08001707486353822, https://leetcode.com/problems/range-sum-query-immutable
392,Is Subsequence,49.2%,Easy,0.07897107508821988, https://leetcode.com/problems/is-subsequence
784,Letter Case Permutation,64.6%,Medium,0.0787033338274549, https://leetcode.com/problems/letter-case-permutation
189,Rotate Array,34.7%,Easy,0.07859731751631634, https://leetcode.com/problems/rotate-array
1297,Maximum Number of Occurrences of a Substring,47.3%,Medium,0.07770898432731625, https://leetcode.com/problems/maximum-number-of-occurrences-of-a-substring
55,Jump Game,34.6%,Medium,0.07748307858552587, https://leetcode.com/problems/jump-game
1155,Number of Dice Rolls With Target Sum,49.0%,Medium,0.07356256717701673, https://leetcode.com/problems/number-of-dice-rolls-with-target-sum
450,Delete Node in a BST,43.1%,Medium,0.07216836682371046, https://leetcode.com/problems/delete-node-in-a-bst
35,Search Insert Position,42.6%,Easy,0.07187646029497265, https://leetcode.com/problems/search-insert-position
1114,Print in Order,65.7%,Easy,0.0700675626167169, https://leetcode.com/problems/print-in-order
432,All O`one Data Structure,32.4%,Hard,0.06887402901251127, https://leetcode.com/problems/all-oone-data-structure
338,Counting Bits,69.5%,Medium,0.06616169008990747, https://leetcode.com/problems/counting-bits
1145,Binary Tree Coloring Game,51.2%,Medium,0.06592172080482424, https://leetcode.com/problems/binary-tree-coloring-game
167,Two Sum II - Input array is sorted,54.1%,Easy,0.06546140041370939, https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
14,Longest Common Prefix,35.4%,Easy,0.06517750377430989, https://leetcode.com/problems/longest-common-prefix
846,Hand of Straights,54.2%,Medium,0.06472423940349638, https://leetcode.com/problems/hand-of-straights
1105,Filling Bookcase Shelves,58.1%,Medium,0.06464285626208545, https://leetcode.com/problems/filling-bookcase-shelves
36,Valid Sudoku,48.7%,Medium,0.06350219850936348, https://leetcode.com/problems/valid-sudoku
413,Arithmetic Slices,57.9%,Medium,0.06286986221654821, https://leetcode.com/problems/arithmetic-slices
350,Intersection of Two Arrays II,51.4%,Easy,0.06202949919751832, https://leetcode.com/problems/intersection-of-two-arrays-ii
47,Permutations II,46.4%,Medium,0.05897935516253239, https://leetcode.com/problems/permutations-ii
516,Longest Palindromic Subsequence,53.2%,Medium,0.058432099871092734, https://leetcode.com/problems/longest-palindromic-subsequence
32,Longest Valid Parentheses,28.4%,Hard,0.0556316959861487, https://leetcode.com/problems/longest-valid-parentheses
30,Substring with Concatenation of All Words,25.4%,Hard,0.05509349054082484, https://leetcode.com/problems/substring-with-concatenation-of-all-words
149,Max Points on a Line,16.9%,Hard,0.0550597771830274, https://leetcode.com/problems/max-points-on-a-line
222,Count Complete Tree Nodes,46.8%,Medium,0.05492114472894792, https://leetcode.com/problems/count-complete-tree-nodes
752,Open the Lock,51.8%,Medium,0.05449289949671372, https://leetcode.com/problems/open-the-lock
703,Kth Largest Element in a Stream,49.7%,Easy,0.054472280837981495, https://leetcode.com/problems/kth-largest-element-in-a-stream
724,Find Pivot Index,44.0%,Easy,0.05428741283782842, https://leetcode.com/problems/find-pivot-index
714,Best Time to Buy and Sell Stock with Transaction Fee,54.7%,Medium,0.05377639678080413, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee
395,Longest Substring with At Least K Repeating Characters,41.4%,Medium,0.05371219359052555, https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
1312,Minimum Insertion Steps to Make a String Palindrome,58.1%,Hard,0.050261834780888255, https://leetcode.com/problems/minimum-insertion-steps-to-make-a-string-palindrome
216,Combination Sum III,56.6%,Medium,0.05017774958571902, https://leetcode.com/problems/combination-sum-iii
219,Contains Duplicate II,37.7%,Easy,0.05012010405957234, https://leetcode.com/problems/contains-duplicate-ii
129,Sum Root to Leaf Numbers,49.1%,Medium,0.050010420574661374, https://leetcode.com/problems/sum-root-to-leaf-numbers
152,Maximum Product Subarray,31.7%,Medium,0.04922388062576129, https://leetcode.com/problems/maximum-product-subarray
437,Path Sum III,47.2%,Medium,0.047656426639019575, https://leetcode.com/problems/path-sum-iii
986,Interval List Intersections,67.3%,Medium,0.04703983015489417, https://leetcode.com/problems/interval-list-intersections
556,Next Greater Element III,31.7%,Medium,0.04679216150675895, https://leetcode.com/problems/next-greater-element-iii
933,Number of Recent Calls,71.9%,Easy,0.046737477851689815, https://leetcode.com/problems/number-of-recent-calls
978,Longest Turbulent Subarray,46.6%,Medium,0.046737477851689815, https://leetcode.com/problems/longest-turbulent-subarray
176,Second Highest Salary,31.6%,Easy,0.045338680589061736, https://leetcode.com/problems/second-highest-salary
733,Flood Fill,55.3%,Easy,0.04413292021115189, https://leetcode.com/problems/flood-fill
104,Maximum Depth of Binary Tree,66.0%,Easy,0.043698924213377836, https://leetcode.com/problems/maximum-depth-of-binary-tree
895,Maximum Frequency Stack,60.6%,Hard,0.04329680575332419, https://leetcode.com/problems/maximum-frequency-stack
110,Balanced Binary Tree,43.5%,Easy,0.04313244044957316, https://leetcode.com/problems/balanced-binary-tree
540,Single Element in a Sorted Array,57.9%,Medium,0.042721256704769804, https://leetcode.com/problems/single-element-in-a-sorted-array
787,Cheapest Flights Within K Stops,39.3%,Medium,0.04186657939278993, https://leetcode.com/problems/cheapest-flights-within-k-stops
29,Divide Two Integers,16.4%,Medium,0.04159641425367403, https://leetcode.com/problems/divide-two-integers
258,Add Digits,57.6%,Easy,0.04107874349984602, https://leetcode.com/problems/add-digits
292,Nim Game,54.9%,Easy,0.03996979643236185, https://leetcode.com/problems/nim-game
212,Word Search II,34.9%,Hard,0.03881156536434583, https://leetcode.com/problems/word-search-ii
18,4Sum,33.7%,Medium,0.03880215185647971, https://leetcode.com/problems/4sum
993,Cousins in Binary Tree,52.0%,Easy,0.03876454345024432, https://leetcode.com/problems/cousins-in-binary-tree
270,Closest Binary Search Tree Value,48.5%,Easy,0.03812405784173832, https://leetcode.com/problems/closest-binary-search-tree-value
144,Binary Tree Preorder Traversal,55.7%,Medium,0.03751377610149742, https://leetcode.com/problems/binary-tree-preorder-traversal
646,Maximum Length of Pair Chain,51.9%,Medium,0.036870535808327706, https://leetcode.com/problems/maximum-length-of-pair-chain
340,Longest Substring with At Most K Distinct Characters,44.1%,Hard,0.035917667750755534, https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
650,2 Keys Keyboard,49.2%,Medium,0.035910501305770864, https://leetcode.com/problems/2-keys-keyboard
334,Increasing Triplet Subsequence,40.0%,Medium,0.03577488021091517, https://leetcode.com/problems/increasing-triplet-subsequence
595,Big Countries,77.3%,Easy,0.03475253199083958, https://leetcode.com/problems/big-countries
1002,Find Common Characters,67.6%,Easy,0.03404262162737441, https://leetcode.com/problems/find-common-characters
217,Contains Duplicate,56.0%,Easy,0.03367321510658789, https://leetcode.com/problems/contains-duplicate
274,H-Index,36.1%,Medium,0.03364488914272426, https://leetcode.com/problems/h-index
1123,Lowest Common Ancestor of Deepest Leaves,66.8%,Medium,0.03147388037973136, https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
38,Count and Say,44.6%,Easy,0.030956234663467107, https://leetcode.com/problems/count-and-say
581,Shortest Unsorted Continuous Subarray,31.1%,Easy,0.029773949243192512, https://leetcode.com/problems/shortest-unsorted-continuous-subarray
66,Plus One,43.0%,Easy,0.028982869090985654, https://leetcode.com/problems/plus-one
147,Insertion Sort List,41.1%,Medium,0.028675799976666333, https://leetcode.com/problems/insertion-sort-list
621,Task Scheduler,50.1%,Medium,0.028315771352780777, https://leetcode.com/problems/task-scheduler
547,Friend Circles,58.6%,Medium,0.027307522052851193, https://leetcode.com/problems/friend-circles
310,Minimum Height Trees,32.3%,Medium,0.02446605215440636, https://leetcode.com/problems/minimum-height-trees
210,Course Schedule II,40.7%,Medium,0.023133880315464483, https://leetcode.com/problems/course-schedule-ii
39,Combination Sum,56.1%,Medium,0.02267028230338623, https://leetcode.com/problems/combination-sum
113,Path Sum II,46.7%,Medium,0.021882711249507664, https://leetcode.com/problems/path-sum-ii
40,Combination Sum II,48.2%,Medium,0.021424290044083395, https://leetcode.com/problems/combination-sum-ii
278,First Bad Version,35.7%,Easy,0.021394050366625766, https://leetcode.com/problems/first-bad-version
224,Basic Calculator,36.8%,Hard,0.020965128465044926, https://leetcode.com/problems/basic-calculator
424,Longest Repeating Character Replacement,47.0%,Medium,0.020461071871340063, https://leetcode.com/problems/longest-repeating-character-replacement
617,Merge Two Binary Trees,74.1%,Easy,0.018496211633622316, https://leetcode.com/problems/merge-two-binary-trees
438,Find All Anagrams in a String,43.3%,Medium,0.01819334596120571, https://leetcode.com/problems/find-all-anagrams-in-a-string
406,Queue Reconstruction by Height,66.9%,Medium,0.01774669468133533, https://leetcode.com/problems/queue-reconstruction-by-height
863,All Nodes Distance K in Binary Tree,55.4%,Medium,0.01695674371877865, https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
1025,Divisor Game,66.3%,Easy,0.015015297119995507, https://leetcode.com/problems/divisor-game
912,Sort an Array,63.9%,Medium,0.01443026482902881, https://leetcode.com/problems/sort-an-array
27,Remove Element,48.2%,Easy,0.01413451093490476, https://leetcode.com/problems/remove-element
100,Same Tree,53.4%,Easy,0.012601237835529503, https://leetcode.com/problems/same-tree
172,Factorial Trailing Zeroes,37.8%,Easy,0.012326812480658571, https://leetcode.com/problems/factorial-trailing-zeroes
957,Prison Cells After N Days,40.7%,Medium,0.010986103354595014, https://leetcode.com/problems/prison-cells-after-n-days
559,Maximum Depth of N-ary Tree,68.7%,Easy,0.010974047031976715, https://leetcode.com/problems/maximum-depth-of-n-ary-tree
746,Min Cost Climbing Stairs,50.3%,Easy,0.009818439209289494, https://leetcode.com/problems/min-cost-climbing-stairs
106,Construct Binary Tree from Inorder and Postorder Traversal,47.2%,Medium,0.009328969762346678, https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
977,Squares of a Sorted Array,72.1%,Easy,0.008733679968754604, https://leetcode.com/problems/squares-of-a-sorted-array
1480,Running Sum of 1d Array,90.5%,Easy,0.0026196884456014947, https://leetcode.com/problems/running-sum-of-1d-array
266,Palindrome Permutation,61.9%,Easy,0, https://leetcode.com/problems/palindrome-permutation
158,Read N Characters Given Read4 II - Call multiple times,33.8%,Hard,0, https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times
570,Managers with at Least 5 Direct Reports,66.0%,Medium,0, https://leetcode.com/problems/managers-with-at-least-5-direct-reports
669,Trim a Binary Search Tree,63.0%,Easy,0, https://leetcode.com/problems/trim-a-binary-search-tree
749,Contain Virus,44.6%,Hard,0, https://leetcode.com/problems/contain-virus
1104,Path In Zigzag Labelled Binary Tree,72.0%,Medium,0, https://leetcode.com/problems/path-in-zigzag-labelled-binary-tree
1478,Allocate Mailboxes,54.9%,Hard,0, https://leetcode.com/problems/allocate-mailboxes