Adds all question csvs

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301,Remove Invalid Parentheses,43.3%,Hard,4.335196687339778, https://leetcode.com/problems/remove-invalid-parentheses
953,Verifying an Alien Dictionary,54.1%,Easy,4.206922996096642, https://leetcode.com/problems/verifying-an-alien-dictionary
273,Integer to English Words,27.1%,Hard,4.078649304853506, https://leetcode.com/problems/integer-to-english-words
1249,Minimum Remove to Make Valid Parentheses,62.5%,Medium,3.9503756136103707, https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
238,Product of Array Except Self,60.1%,Medium,3.920816433231904, https://leetcode.com/problems/product-of-array-except-self
560,Subarray Sum Equals K,43.9%,Medium,3.902938675359258, https://leetcode.com/problems/subarray-sum-equals-k
973,K Closest Points to Origin,63.8%,Medium,3.837939583445208, https://leetcode.com/problems/k-closest-points-to-origin
680,Valid Palindrome II,36.6%,Easy,3.743691921282678, https://leetcode.com/problems/valid-palindrome-ii
297,Serialize and Deserialize Binary Tree,47.5%,Hard,3.615418230039542, https://leetcode.com/problems/serialize-and-deserialize-binary-tree
269,Alien Dictionary,33.3%,Hard,3.4871445387964064, https://leetcode.com/problems/alien-dictionary
158,Read N Characters Given Read4 II - Call multiple times,33.8%,Hard,3.434469283544648, https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times
253,Meeting Rooms II,45.7%,Medium,3.427944872876946, https://leetcode.com/problems/meeting-rooms-ii
426,Convert Binary Search Tree to Sorted Doubly Linked List,59.1%,Medium,3.4110516539651776, https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
124,Binary Tree Maximum Path Sum,34.3%,Hard,3.282777962722042, https://leetcode.com/problems/binary-tree-maximum-path-sum
438,Find All Anagrams in a String,43.3%,Medium,3.228312998479945, https://leetcode.com/problems/find-all-anagrams-in-a-string
125,Valid Palindrome,36.7%,Easy,3.16695362968713, https://leetcode.com/problems/valid-palindrome
282,Expression Add Operators,35.5%,Hard,3.161352879902371, https://leetcode.com/problems/expression-add-operators
278,First Bad Version,35.7%,Easy,3.141715385559214, https://leetcode.com/problems/first-bad-version
523,Continuous Subarray Sum,24.6%,Medium,3.134589355474442, https://leetcode.com/problems/continuous-subarray-sum
211,Add and Search Word - Data structure design,38.1%,Medium,3.1233998390837767, https://leetcode.com/problems/add-and-search-word-data-structure-design
67,Add Binary,45.2%,Easy,3.093426978305565, https://leetcode.com/problems/add-binary
173,Binary Search Tree Iterator,56.6%,Medium,3.085972660150353, https://leetcode.com/problems/binary-search-tree-iterator
415,Add Strings,47.5%,Easy,3.0354142430165405, https://leetcode.com/problems/add-strings
23,Merge k Sorted Lists,40.2%,Hard,3.012005317142122, https://leetcode.com/problems/merge-k-sorted-lists
199,Binary Tree Right Side View,54.1%,Medium,2.9712068716590117, https://leetcode.com/problems/binary-tree-right-side-view
76,Minimum Window Substring,34.6%,Hard,2.903027697620134, https://leetcode.com/problems/minimum-window-substring
65,Valid Number,15.3%,Hard,2.774754006376998, https://leetcode.com/problems/valid-number
215,Kth Largest Element in an Array,55.4%,Medium,2.6975027548980828, https://leetcode.com/problems/kth-largest-element-in-an-array
31,Next Permutation,32.6%,Medium,2.69746063524191, https://leetcode.com/problems/next-permutation
543,Diameter of Binary Tree,48.4%,Easy,2.6227083482028957, https://leetcode.com/problems/diameter-of-binary-tree
636,Exclusive Time of Functions,51.9%,Medium,2.6211064122306147, https://leetcode.com/problems/exclusive-time-of-functions
340,Longest Substring with At Most K Distinct Characters,44.1%,Hard,2.6205141399271614, https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
785,Is Graph Bipartite?,47.5%,Medium,2.559938999523321, https://leetcode.com/problems/is-graph-bipartite
56,Merge Intervals,39.3%,Medium,2.5576573577289374, https://leetcode.com/problems/merge-intervals
314,Binary Tree Vertical Order Traversal,45.3%,Medium,2.550800170263845, https://leetcode.com/problems/binary-tree-vertical-order-traversal
689,Maximum Sum of 3 Non-Overlapping Subarrays,46.3%,Hard,2.51549898450556, https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays
986,Interval List Intersections,67.3%,Medium,2.4093233466724615, https://leetcode.com/problems/interval-list-intersections
349,Intersection of Two Arrays,62.5%,Easy,2.369718253147033, https://leetcode.com/problems/intersection-of-two-arrays
721,Accounts Merge,48.8%,Medium,2.365752321622797, https://leetcode.com/problems/accounts-merge
133,Clone Graph,34.8%,Medium,2.3193152747996915, https://leetcode.com/problems/clone-graph
29,Divide Two Integers,16.4%,Medium,2.2326816570763848, https://leetcode.com/problems/divide-two-integers
88,Merge Sorted Array,39.4%,Easy,2.213966373450817, https://leetcode.com/problems/merge-sorted-array
896,Monotonic Array,57.9%,Easy,2.1852457458755925, https://leetcode.com/problems/monotonic-array
311,Sparse Matrix Multiplication,61.9%,Medium,2.157267013499234, https://leetcode.com/problems/sparse-matrix-multiplication
34,Find First and Last Position of Element in Sorted Array,36.2%,Medium,2.1199910717145767, https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
270,Closest Binary Search Tree Value,48.5%,Easy,2.111207106216602, https://leetcode.com/problems/closest-binary-search-tree-value
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,2.102577038080218, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
304,Range Sum Query 2D - Immutable,38.6%,Medium,2.090977201214256, https://leetcode.com/problems/range-sum-query-2d-immutable
98,Validate Binary Search Tree,27.8%,Medium,2.0891962855012602, https://leetcode.com/problems/validate-binary-search-tree
621,Task Scheduler,50.1%,Medium,2.042599452137005, https://leetcode.com/problems/task-scheduler
317,Shortest Distance from All Buildings,41.4%,Hard,2.01991943083028, https://leetcode.com/problems/shortest-distance-from-all-buildings
398,Random Pick Index,56.0%,Medium,2.008333871806795, https://leetcode.com/problems/random-pick-index
42,Trapping Rain Water,48.9%,Hard,1.9873336630842446, https://leetcode.com/problems/trapping-rain-water
157,Read N Characters Given Read4,34.2%,Easy,1.985241648938099, https://leetcode.com/problems/read-n-characters-given-read4
139,Word Break,40.1%,Medium,1.8922941949982255, https://leetcode.com/problems/word-break
146,LRU Cache,33.2%,Medium,1.8699827439738443, https://leetcode.com/problems/lru-cache
10,Regular Expression Matching,26.8%,Hard,1.8647592081270254, https://leetcode.com/problems/regular-expression-matching
71,Simplify Path,32.6%,Medium,1.8423694701144728, https://leetcode.com/problems/simplify-path
43,Multiply Strings,33.9%,Medium,1.8392290485002738, https://leetcode.com/problems/multiply-strings
708,Insert into a Sorted Circular Linked List,31.6%,Medium,1.8368993052205314, https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
15,3Sum,26.8%,Medium,1.8210457271059735, https://leetcode.com/problems/3sum
33,Search in Rotated Sorted Array,34.5%,Medium,1.820722356662543, https://leetcode.com/problems/search-in-rotated-sorted-array
958,Check Completeness of a Binary Tree,52.1%,Medium,1.783474417693948, https://leetcode.com/problems/check-completeness-of-a-binary-tree
938,Range Sum of BST,81.3%,Easy,1.7818897566437633, https://leetcode.com/problems/range-sum-of-bst
825,Friends Of Appropriate Ages,42.7%,Medium,1.7740301628140611, https://leetcode.com/problems/friends-of-appropriate-ages
1428,Leftmost Column with at Least a One,46.8%,Medium,1.7410939458816417, https://leetcode.com/problems/leftmost-column-with-at-least-a-one
143,Reorder List,37.1%,Medium,1.7332983469419634, https://leetcode.com/problems/reorder-list
824,Goat Latin,63.4%,Easy,1.732127219683092, https://leetcode.com/problems/goat-latin
286,Walls and Gates,54.5%,Medium,1.6650077635889111, https://leetcode.com/problems/walls-and-gates
987,Vertical Order Traversal of a Binary Tree,36.6%,Medium,1.6510344027543389, https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
121,Best Time to Buy and Sell Stock,50.5%,Easy,1.6506540247828296, https://leetcode.com/problems/best-time-to-buy-and-sell-stock
277,Find the Celebrity,41.8%,Medium,1.6067213396798519, https://leetcode.com/problems/find-the-celebrity
528,Random Pick with Weight,43.9%,Medium,1.573847508711663, https://leetcode.com/problems/random-pick-with-weight
380,Insert Delete GetRandom O(1),47.5%,Medium,1.5587288098338494, https://leetcode.com/problems/insert-delete-getrandom-o1
161,One Edit Distance,32.3%,Medium,1.5461666704459118, https://leetcode.com/problems/one-edit-distance
339,Nested List Weight Sum,74.0%,Easy,1.5339303599259553, https://leetcode.com/problems/nested-list-weight-sum
767,Reorganize String,48.7%,Medium,1.4877315278489756, https://leetcode.com/problems/reorganize-string
350,Intersection of Two Arrays II,51.4%,Easy,1.4808978669832478, https://leetcode.com/problems/intersection-of-two-arrays-ii
227,Basic Calculator II,36.9%,Medium,1.4808670150064625, https://leetcode.com/problems/basic-calculator-ii
246,Strobogrammatic Number,45.0%,Easy,1.460594327130399, https://leetcode.com/problems/strobogrammatic-number
91,Decode Ways,24.7%,Medium,1.459985348070545, https://leetcode.com/problems/decode-ways
670,Maximum Swap,43.6%,Medium,1.4565677885079338, https://leetcode.com/problems/maximum-swap
1,Two Sum,45.6%,Easy,1.4488825064262976, https://leetcode.com/problems/two-sum
162,Find Peak Element,43.3%,Medium,1.4410277421297353, https://leetcode.com/problems/find-peak-element
200,Number of Islands,46.8%,Medium,1.4234691396268788, https://leetcode.com/problems/number-of-islands
247,Strobogrammatic Number II,47.6%,Medium,1.4154036932554577, https://leetcode.com/problems/strobogrammatic-number-ii
249,Group Shifted Strings,55.1%,Medium,1.4075846503536702, https://leetcode.com/problems/group-shifted-strings
432,All O`one Data Structure,32.4%,Hard,1.389408935384036, https://leetcode.com/problems/all-oone-data-structure
138,Copy List with Random Pointer,36.4%,Medium,1.3877294433016032, https://leetcode.com/problems/copy-list-with-random-pointer
257,Binary Tree Paths,51.5%,Easy,1.3511913085572316, https://leetcode.com/problems/binary-tree-paths
498,Diagonal Traverse,48.2%,Medium,1.2592309745261798, https://leetcode.com/problems/diagonal-traverse
348,Design Tic-Tac-Toe,54.3%,Medium,1.238658362313826, https://leetcode.com/problems/design-tic-tac-toe
1060,Missing Element in Sorted Array,54.5%,Medium,1.2015522948374056, https://leetcode.com/problems/missing-element-in-sorted-array
463,Island Perimeter,65.7%,Easy,1.1974645909616073, https://leetcode.com/problems/island-perimeter
1197,Minimum Knight Moves,36.1%,Medium,1.1562032194143523, https://leetcode.com/problems/minimum-knight-moves
921,Minimum Add to Make Parentheses Valid,73.7%,Medium,1.1523660079764306, https://leetcode.com/problems/minimum-add-to-make-parentheses-valid
766,Toeplitz Matrix,65.1%,Easy,1.1255435578759945, https://leetcode.com/problems/toeplitz-matrix
20,Valid Parentheses,39.0%,Easy,1.1000699309983533, https://leetcode.com/problems/valid-parentheses
419,Battleships in a Board,70.0%,Medium,1.0742208355439504, https://leetcode.com/problems/battleships-in-a-board
109,Convert Sorted List to Binary Search Tree,47.7%,Medium,1.072828171512395, https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
863,All Nodes Distance K in Binary Tree,55.4%,Medium,1.0596708581592273, https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
658,Find K Closest Elements,40.9%,Medium,1.0461722557435686, https://leetcode.com/problems/find-k-closest-elements
536,Construct Binary Tree from String,48.3%,Medium,1.0281929964622412, https://leetcode.com/problems/construct-binary-tree-from-string
114,Flatten Binary Tree to Linked List,49.3%,Medium,1.019434258955927, https://leetcode.com/problems/flatten-binary-tree-to-linked-list
50,Pow(x, n),30.3%,Medium,0.9999968664707609, https://leetcode.com/problems/powx-n
865,Smallest Subtree with all the Deepest Nodes,60.8%,Medium,0.9992659535205286, https://leetcode.com/problems/smallest-subtree-with-all-the-deepest-nodes
480,Sliding Window Median,37.2%,Hard,0.9861751440709843, https://leetcode.com/problems/sliding-window-median
283,Move Zeroes,57.8%,Easy,0.9799710505768641, https://leetcode.com/problems/move-zeroes
126,Word Ladder II,22.1%,Hard,0.9702767208990074, https://leetcode.com/problems/word-ladder-ii
329,Longest Increasing Path in a Matrix,43.4%,Hard,0.9678875215177066, https://leetcode.com/problems/longest-increasing-path-in-a-matrix
8,String to Integer (atoi),15.4%,Medium,0.9542977106716032, https://leetcode.com/problems/string-to-integer-atoi
1123,Lowest Common Ancestor of Deepest Leaves,66.8%,Medium,0.9426391836226029, https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
674,Longest Continuous Increasing Subsequence,45.9%,Easy,0.937643856344724, https://leetcode.com/problems/longest-continuous-increasing-subsequence
32,Longest Valid Parentheses,28.4%,Hard,0.9348811561799546, https://leetcode.com/problems/longest-valid-parentheses
1004,Max Consecutive Ones III,59.1%,Medium,0.9227276214905304, https://leetcode.com/problems/max-consecutive-ones-iii
791,Custom Sort String,65.7%,Medium,0.9193484785821322, https://leetcode.com/problems/custom-sort-string
678,Valid Parenthesis String,31.0%,Medium,0.9043878930155473, https://leetcode.com/problems/valid-parenthesis-string
336,Palindrome Pairs,33.7%,Hard,0.8971409526507793, https://leetcode.com/problems/palindrome-pairs
3,Longest Substring Without Repeating Characters,30.4%,Medium,0.8953752760627052, https://leetcode.com/problems/longest-substring-without-repeating-characters
616,Add Bold Tag in String,43.1%,Medium,0.8724465334959766, https://leetcode.com/problems/add-bold-tag-in-string
647,Palindromic Substrings,60.6%,Medium,0.8682112403653768, https://leetcode.com/problems/palindromic-substrings
224,Basic Calculator,36.8%,Hard,0.8569364892249722, https://leetcode.com/problems/basic-calculator
494,Target Sum,46.3%,Medium,0.8526861460071543, https://leetcode.com/problems/target-sum
22,Generate Parentheses,62.7%,Medium,0.8495119409673674, https://leetcode.com/problems/generate-parentheses
1027,Longest Arithmetic Sequence,53.4%,Medium,0.832909122935104, https://leetcode.com/problems/longest-arithmetic-sequence
1026,Maximum Difference Between Node and Ancestor,66.0%,Medium,0.8326883967450455, https://leetcode.com/problems/maximum-difference-between-node-and-ancestor
341,Flatten Nested List Iterator,52.9%,Medium,0.8292610077755705, https://leetcode.com/problems/flatten-nested-list-iterator
1216,Valid Palindrome III,47.8%,Hard,0.8187244879431477, https://leetcode.com/problems/valid-palindrome-iii
452,Minimum Number of Arrows to Burst Balloons,49.6%,Medium,0.8171437319197754, https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons
468,Validate IP Address,24.1%,Medium,0.8167611365271219, https://leetcode.com/problems/validate-ip-address
885,Spiral Matrix III,69.4%,Medium,0.7976598792954321, https://leetcode.com/problems/spiral-matrix-iii
378,Kth Smallest Element in a Sorted Matrix,54.3%,Medium,0.774853894374, https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
416,Partition Equal Subset Sum,43.7%,Medium,0.7672162050787574, https://leetcode.com/problems/partition-equal-subset-sum
489,Robot Room Cleaner,69.7%,Hard,0.7609230442143258, https://leetcode.com/problems/robot-room-cleaner
25,Reverse Nodes in k-Group,42.1%,Hard,0.7568915065003623, https://leetcode.com/problems/reverse-nodes-in-k-group
78,Subsets,62.0%,Medium,0.7567934361936809, https://leetcode.com/problems/subsets
449,Serialize and Deserialize BST,52.0%,Medium,0.7481106198504164, https://leetcode.com/problems/serialize-and-deserialize-bst
622,Design Circular Queue,43.8%,Medium,0.7481106198504164, https://leetcode.com/problems/design-circular-queue
567,Permutation in String,44.4%,Medium,0.736255715579399, https://leetcode.com/problems/permutation-in-string
266,Palindrome Permutation,61.9%,Easy,0.7234683742749072, https://leetcode.com/problems/palindrome-permutation
381,Insert Delete GetRandom O(1) - Duplicates allowed,34.1%,Hard,0.7223768188748837, https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed
772,Basic Calculator III,41.3%,Hard,0.7157652691477178, https://leetcode.com/problems/basic-calculator-iii
408,Valid Word Abbreviation,30.6%,Easy,0.682218110027755, https://leetcode.com/problems/valid-word-abbreviation
57,Insert Interval,33.5%,Hard,0.6699349836634878, https://leetcode.com/problems/insert-interval
540,Single Element in a Sorted Array,57.9%,Medium,0.6681029057556921, https://leetcode.com/problems/single-element-in-a-sorted-array
163,Missing Ranges,24.3%,Medium,0.6673264809382026, https://leetcode.com/problems/missing-ranges
325,Maximum Size Subarray Sum Equals k,46.8%,Medium,0.6580558607486752, https://leetcode.com/problems/maximum-size-subarray-sum-equals-k
529,Minesweeper,59.1%,Medium,0.6503908125743563, https://leetcode.com/problems/minesweeper
839,Similar String Groups,38.6%,Hard,0.6425949013971141, https://leetcode.com/problems/similar-string-groups
490,The Maze,51.4%,Medium,0.6350863559329611, https://leetcode.com/problems/the-maze
568,Maximum Vacation Days,40.8%,Hard,0.633385446017691, https://leetcode.com/problems/maximum-vacation-days
166,Fraction to Recurring Decimal,21.6%,Medium,0.6206038478805173, https://leetcode.com/problems/fraction-to-recurring-decimal
93,Restore IP Addresses,35.6%,Medium,0.6115646985544299, https://leetcode.com/problems/restore-ip-addresses
207,Course Schedule,43.1%,Medium,0.6103117404763498, https://leetcode.com/problems/course-schedule
251,Flatten 2D Vector,45.7%,Medium,0.6100265562802061, https://leetcode.com/problems/flatten-2d-vector
1094,Car Pooling,56.7%,Medium,0.6042711750233518, https://leetcode.com/problems/car-pooling
53,Maximum Subarray,46.5%,Easy,0.6015398665839413, https://leetcode.com/problems/maximum-subarray
2,Add Two Numbers,33.9%,Medium,0.5977271417553114, https://leetcode.com/problems/add-two-numbers
939,Minimum Area Rectangle,51.8%,Medium,0.5793532707737441, https://leetcode.com/problems/minimum-area-rectangle
332,Reconstruct Itinerary,36.7%,Medium,0.5760996776571121, https://leetcode.com/problems/reconstruct-itinerary
319,Bulb Switcher,45.4%,Medium,0.5639354490799391, https://leetcode.com/problems/bulb-switcher
692,Top K Frequent Words,51.8%,Medium,0.5621453229350715, https://leetcode.com/problems/top-k-frequent-words
347,Top K Frequent Elements,61.2%,Medium,0.5611438666741244, https://leetcode.com/problems/top-k-frequent-elements
935,Knight Dialer,45.2%,Medium,0.5465437063680699, https://leetcode.com/problems/knight-dialer
127,Word Ladder,29.6%,Medium,0.5455963628062589, https://leetcode.com/problems/word-ladder
963,Minimum Area Rectangle II,50.9%,Medium,0.5446366736089481, https://leetcode.com/problems/minimum-area-rectangle-ii
477,Total Hamming Distance,50.4%,Medium,0.5168845792337272, https://leetcode.com/problems/total-hamming-distance
248,Strobogrammatic Number III,39.6%,Hard,0.5138062519041285, https://leetcode.com/problems/strobogrammatic-number-iii
92,Reverse Linked List II,38.8%,Medium,0.5133381879018739, https://leetcode.com/problems/reverse-linked-list-ii
394,Decode String,50.0%,Medium,0.5093485186229775, https://leetcode.com/problems/decode-string
75,Sort Colors,47.3%,Medium,0.5079686937722695, https://leetcode.com/problems/sort-colors
140,Word Break II,32.6%,Hard,0.5015389381977866, https://leetcode.com/problems/word-break-ii
117,Populating Next Right Pointers in Each Node II,39.1%,Medium,0.4973329437215165, https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
13,Roman to Integer,55.7%,Easy,0.48610209879675464, https://leetcode.com/problems/roman-to-integer
405,Convert a Number to Hexadecimal,43.9%,Easy,0.4744855160464951, https://leetcode.com/problems/convert-a-number-to-hexadecimal
844,Backspace String Compare,46.4%,Easy,0.46741819242485527, https://leetcode.com/problems/backspace-string-compare
934,Shortest Bridge,48.2%,Medium,0.46228336275033, https://leetcode.com/problems/shortest-bridge
691,Stickers to Spell Word,42.9%,Hard,0.4602156228795727, https://leetcode.com/problems/stickers-to-spell-word
5,Longest Palindromic Substring,29.5%,Medium,0.46006363834709674, https://leetcode.com/problems/longest-palindromic-substring
358,Rearrange String k Distance Apart,34.9%,Hard,0.4583075894825443, https://leetcode.com/problems/rearrange-string-k-distance-apart
1213,Intersection of Three Sorted Arrays,78.9%,Easy,0.45778473187961194, https://leetcode.com/problems/intersection-of-three-sorted-arrays
1269,Number of Ways to Stay in the Same Place After Some Steps,43.2%,Hard,0.4557571315683002, https://leetcode.com/problems/number-of-ways-to-stay-in-the-same-place-after-some-steps
428,Serialize and Deserialize N-ary Tree,59.4%,Hard,0.4508337131380154, https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
548,Split Array with Equal Sum,46.4%,Medium,0.448122872401898, https://leetcode.com/problems/split-array-with-equal-sum
977,Squares of a Sorted Array,72.1%,Easy,0.44558510189758965, https://leetcode.com/problems/squares-of-a-sorted-array
46,Permutations,63.5%,Medium,0.44390547933455826, https://leetcode.com/problems/permutations
387,First Unique Character in a String,53.4%,Easy,0.44127087243911367, https://leetcode.com/problems/first-unique-character-in-a-string
240,Search a 2D Matrix II,43.2%,Medium,0.438224237725094, https://leetcode.com/problems/search-a-2d-matrix-ii
695,Max Area of Island,62.7%,Medium,0.43140512911678014, https://leetcode.com/problems/max-area-of-island
17,Letter Combinations of a Phone Number,46.8%,Medium,0.42775086183255473, https://leetcode.com/problems/letter-combinations-of-a-phone-number
694,Number of Distinct Islands,56.0%,Medium,0.4274440148269396, https://leetcode.com/problems/number-of-distinct-islands
1233,Remove Sub-Folders from the Filesystem,59.5%,Medium,0.4243747624654565, https://leetcode.com/problems/remove-sub-folders-from-the-filesystem
239,Sliding Window Maximum,43.0%,Hard,0.4104750065235096, https://leetcode.com/problems/sliding-window-maximum
597,Friend Requests I: Overall Acceptance Rate,41.0%,Easy,0.39908695436741093, https://leetcode.com/problems/friend-requests-i-overall-acceptance-rate
364,Nested List Weight Sum II,62.8%,Medium,0.3968580334554196, https://leetcode.com/problems/nested-list-weight-sum-ii
742,Closest Leaf in a Binary Tree,43.6%,Medium,0.38378938262912404, https://leetcode.com/problems/closest-leaf-in-a-binary-tree
230,Kth Smallest Element in a BST,60.2%,Medium,0.37791604408658863, https://leetcode.com/problems/kth-smallest-element-in-a-bst
632,Smallest Range Covering Elements from K Lists,52.4%,Hard,0.37755631999108785, https://leetcode.com/problems/smallest-range-covering-elements-from-k-lists
875,Koko Eating Bananas,52.1%,Medium,0.37067899202274884, https://leetcode.com/problems/koko-eating-bananas
128,Longest Consecutive Sequence,45.1%,Hard,0.36849388991868803, https://leetcode.com/problems/longest-consecutive-sequence
1032,Stream of Characters,48.3%,Hard,0.35736199308977074, https://leetcode.com/problems/stream-of-characters
44,Wildcard Matching,24.7%,Hard,0.34881383996175425, https://leetcode.com/problems/wildcard-matching
116,Populating Next Right Pointers in Each Node,45.2%,Medium,0.34657253966731805, https://leetcode.com/problems/populating-next-right-pointers-in-each-node
39,Combination Sum,56.1%,Medium,0.34653485590252786, https://leetcode.com/problems/combination-sum
21,Merge Two Sorted Lists,53.5%,Easy,0.34463115505721625, https://leetcode.com/problems/merge-two-sorted-lists
855,Exam Room,43.1%,Medium,0.34442921752179523, https://leetcode.com/problems/exam-room
105,Construct Binary Tree from Preorder and Inorder Traversal,48.8%,Medium,0.3420203241032511, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
334,Increasing Triplet Subsequence,40.0%,Medium,0.33981980987317617, https://leetcode.com/problems/increasing-triplet-subsequence
102,Binary Tree Level Order Traversal,54.6%,Medium,0.3378514215595053, https://leetcode.com/problems/binary-tree-level-order-traversal
400,Nth Digit,31.7%,Medium,0.33647223662121295, https://leetcode.com/problems/nth-digit
73,Set Matrix Zeroes,43.1%,Medium,0.3336019272255533, https://leetcode.com/problems/set-matrix-zeroes
515,Find Largest Value in Each Tree Row,61.1%,Medium,0.32956374627740126, https://leetcode.com/problems/find-largest-value-in-each-tree-row
333,Largest BST Subtree,35.8%,Medium,0.32931497055013925, https://leetcode.com/problems/largest-bst-subtree
827,Making A Large Island,45.7%,Hard,0.32879599515977564, https://leetcode.com/problems/making-a-large-island
295,Find Median from Data Stream,44.3%,Hard,0.32347449067924283, https://leetcode.com/problems/find-median-from-data-stream
137,Single Number II,52.4%,Medium,0.32305590883561364, https://leetcode.com/problems/single-number-ii
549,Binary Tree Longest Consecutive Sequence II,47.0%,Medium,0.31383478526224007, https://leetcode.com/problems/binary-tree-longest-consecutive-sequence-ii
1242,Web Crawler Multithreaded,45.9%,Medium,0.30961714931803663, https://leetcode.com/problems/web-crawler-multithreaded
285,Inorder Successor in BST,40.4%,Medium,0.3084972403983375, https://leetcode.com/problems/inorder-successor-in-bst
346,Moving Average from Data Stream,70.9%,Easy,0.3081922191359908, https://leetcode.com/problems/moving-average-from-data-stream
614,Second Degree Follower,30.3%,Medium,0.3030501026800949, https://leetcode.com/problems/second-degree-follower
564,Find the Closest Palindrome,19.7%,Hard,0.3007541540191337, https://leetcode.com/problems/find-the-closest-palindrome
1245,Tree Diameter,60.1%,Medium,0.29849298855599654, https://leetcode.com/problems/tree-diameter
936,Stamping The Sequence,42.8%,Hard,0.2972515234679316, https://leetcode.com/problems/stamping-the-sequence
51,N-Queens,46.6%,Hard,0.28871459706597014, https://leetcode.com/problems/n-queens
1424,Diagonal Traverse II,42.4%,Medium,0.28406186115878557, https://leetcode.com/problems/diagonal-traverse-ii
111,Minimum Depth of Binary Tree,37.4%,Easy,0.2817695765670001, https://leetcode.com/problems/minimum-depth-of-binary-tree
430,Flatten a Multilevel Doubly Linked List,55.1%,Medium,0.2782260520687776, https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
129,Sum Root to Leaf Numbers,49.1%,Medium,0.27802016154004405, https://leetcode.com/problems/sum-root-to-leaf-numbers
399,Evaluate Division,51.6%,Medium,0.27239954676797734, https://leetcode.com/problems/evaluate-division
214,Shortest Palindrome,29.8%,Hard,0.2723477084516743, https://leetcode.com/problems/shortest-palindrome
49,Group Anagrams,56.9%,Medium,0.2690483662746409, https://leetcode.com/problems/group-anagrams
300,Longest Increasing Subsequence,42.6%,Medium,0.25998614206252363, https://leetcode.com/problems/longest-increasing-subsequence
663,Equal Tree Partition,39.5%,Medium,0.2578291093020998, https://leetcode.com/problems/equal-tree-partition
609,Find Duplicate File in System,59.5%,Medium,0.25388017696233983, https://leetcode.com/problems/find-duplicate-file-in-system
206,Reverse Linked List,62.5%,Easy,0.24955592841391872, https://leetcode.com/problems/reverse-linked-list
703,Kth Largest Element in a Stream,49.7%,Easy,0.24952447488654275, https://leetcode.com/problems/kth-largest-element-in-a-stream
724,Find Pivot Index,44.0%,Easy,0.2487542034447554, https://leetcode.com/problems/find-pivot-index
54,Spiral Matrix,34.1%,Medium,0.2464878617937269, https://leetcode.com/problems/spiral-matrix
19,Remove Nth Node From End of List,35.2%,Medium,0.24535686887589467, https://leetcode.com/problems/remove-nth-node-from-end-of-list
208,Implement Trie (Prefix Tree),49.4%,Medium,0.24427699389743987, https://leetcode.com/problems/implement-trie-prefix-tree
308,Range Sum Query 2D - Mutable,35.6%,Hard,0.24116205681688807, https://leetcode.com/problems/range-sum-query-2d-mutable
296,Best Meeting Point,57.5%,Hard,0.23670108287626285, https://leetcode.com/problems/best-meeting-point
26,Remove Duplicates from Sorted Array,45.1%,Easy,0.2297722482453755, https://leetcode.com/problems/remove-duplicates-from-sorted-array
291,Word Pattern II,43.4%,Hard,0.22825865198098017, https://leetcode.com/problems/word-pattern-ii
305,Number of Islands II,40.1%,Hard,0.22128423872402644, https://leetcode.com/problems/number-of-islands-ii
212,Word Search II,34.9%,Hard,0.22101415243595443, https://leetcode.com/problems/word-search-ii
393,UTF-8 Validation,37.5%,Medium,0.2166710368085923, https://leetcode.com/problems/utf-8-validation
40,Combination Sum II,48.2%,Medium,0.21560801183996, https://leetcode.com/problems/combination-sum-ii
79,Word Search,35.6%,Medium,0.21504688290625537, https://leetcode.com/problems/word-search
81,Search in Rotated Sorted Array II,33.0%,Medium,0.21357410029805904, https://leetcode.com/problems/search-in-rotated-sorted-array-ii
74,Search a 2D Matrix,36.5%,Medium,0.2107726489416756, https://leetcode.com/problems/search-a-2d-matrix
1053,Previous Permutation With One Swap,48.5%,Medium,0.20909179785855941, https://leetcode.com/problems/previous-permutation-with-one-swap
218,The Skyline Problem,34.6%,Hard,0.20884831112738325, https://leetcode.com/problems/the-skyline-problem
1008,Construct Binary Search Tree from Preorder Traversal,78.4%,Medium,0.2053974398608136, https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal
37,Sudoku Solver,43.6%,Hard,0.20309089276282075, https://leetcode.com/problems/sudoku-solver
983,Minimum Cost For Tickets,60.5%,Medium,0.2028261131996316, https://leetcode.com/problems/minimum-cost-for-tickets
443,String Compression,41.3%,Easy,0.2021974133159511, https://leetcode.com/problems/string-compression
4,Median of Two Sorted Arrays,29.6%,Hard,0.19869709834201, https://leetcode.com/problems/median-of-two-sorted-arrays
352,Data Stream as Disjoint Intervals,47.3%,Hard,0.1980128865886302, https://leetcode.com/problems/data-stream-as-disjoint-intervals
637,Average of Levels in Binary Tree,63.1%,Easy,0.1972664368553499, https://leetcode.com/problems/average-of-levels-in-binary-tree
794,Valid Tic-Tac-Toe State,32.6%,Medium,0.19671029424605424, https://leetcode.com/problems/valid-tic-tac-toe-state
252,Meeting Rooms,54.6%,Easy,0.19259310711578434, https://leetcode.com/problems/meeting-rooms
272,Closest Binary Search Tree Value II,50.5%,Hard,0.1920777317393193, https://leetcode.com/problems/closest-binary-search-tree-value-ii
160,Intersection of Two Linked Lists,40.6%,Easy,0.18862763579294656, https://leetcode.com/problems/intersection-of-two-linked-lists
235,Lowest Common Ancestor of a Binary Search Tree,49.9%,Easy,0.18753347368046405, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
242,Valid Anagram,56.9%,Easy,0.18562894775162106, https://leetcode.com/problems/valid-anagram
852,Peak Index in a Mountain Array,71.6%,Easy,0.18496356625679328, https://leetcode.com/problems/peak-index-in-a-mountain-array
969,Pancake Sorting,67.5%,Medium,0.18336922582639836, https://leetcode.com/problems/pancake-sorting
1091,Shortest Path in Binary Matrix,38.2%,Medium,0.18312509239363786, https://leetcode.com/problems/shortest-path-in-binary-matrix
323,Number of Connected Components in an Undirected Graph,56.0%,Medium,0.18178978331691914, https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph
759,Employee Free Time,66.3%,Hard,0.1816986978513639, https://leetcode.com/problems/employee-free-time
388,Longest Absolute File Path,41.8%,Medium,0.18128582392042256, https://leetcode.com/problems/longest-absolute-file-path
445,Add Two Numbers II,54.5%,Medium,0.1810800917058897, https://leetcode.com/problems/add-two-numbers-ii
641,Design Circular Deque,52.7%,Medium,0.1769307081590782, https://leetcode.com/problems/design-circular-deque
556,Next Greater Element III,31.7%,Medium,0.1753110123077373, https://leetcode.com/problems/next-greater-element-iii
24,Swap Nodes in Pairs,50.4%,Medium,0.1729418749687828, https://leetcode.com/problems/swap-nodes-in-pairs
223,Rectangle Area,37.8%,Medium,0.172469260350943, https://leetcode.com/problems/rectangle-area
442,Find All Duplicates in an Array,67.8%,Medium,0.17219015650505717, https://leetcode.com/problems/find-all-duplicates-in-an-array
843,Guess the Word,46.1%,Hard,0.17062551703076334, https://leetcode.com/problems/guess-the-word
136,Single Number,65.5%,Easy,0.16883202978332956, https://leetcode.com/problems/single-number
148,Sort List,42.3%,Medium,0.16575313044672194, https://leetcode.com/problems/sort-list
280,Wiggle Sort,63.8%,Medium,0.16413412381144152, https://leetcode.com/problems/wiggle-sort
642,Design Search Autocomplete System,44.7%,Hard,0.16312782492496253, https://leetcode.com/problems/design-search-autocomplete-system
435,Non-overlapping Intervals,42.9%,Medium,0.16281358156492662, https://leetcode.com/problems/non-overlapping-intervals
503,Next Greater Element II,56.5%,Medium,0.15815434954605545, https://leetcode.com/problems/next-greater-element-ii
209,Minimum Size Subarray Sum,38.2%,Medium,0.1579457507958099, https://leetcode.com/problems/minimum-size-subarray-sum
189,Rotate Array,34.7%,Easy,0.1575195768933631, https://leetcode.com/problems/rotate-array
414,Third Maximum Number,30.5%,Easy,0.15407631103237035, https://leetcode.com/problems/third-maximum-number
505,The Maze II,47.7%,Medium,0.15388658369473163, https://leetcode.com/problems/the-maze-ii
122,Best Time to Buy and Sell Stock II,57.0%,Easy,0.1524210743225689, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
403,Frog Jump,39.7%,Hard,0.1519909531790461, https://leetcode.com/problems/frog-jump
676,Implement Magic Dictionary,54.5%,Medium,0.15104025741286586, https://leetcode.com/problems/implement-magic-dictionary
14,Longest Common Prefix,35.4%,Easy,0.15097420446868728, https://leetcode.com/problems/longest-common-prefix
602,Friend Requests II: Who Has the Most Friends,53.4%,Medium,0.14928324354899083, https://leetcode.com/problems/friend-requests-ii-who-has-the-most-friends
478,Generate Random Point in a Circle,38.5%,Medium,0.14897379164772453, https://leetcode.com/problems/generate-random-point-in-a-circle
360,Sort Transformed Array,48.8%,Medium,0.14624550032014502, https://leetcode.com/problems/sort-transformed-array
688,Knight Probability in Chessboard,48.9%,Medium,0.14465605390747982, https://leetcode.com/problems/knight-probability-in-chessboard
328,Odd Even Linked List,55.7%,Medium,0.14442996827561513, https://leetcode.com/problems/odd-even-linked-list
145,Binary Tree Postorder Traversal,55.0%,Hard,0.14214495289159543, https://leetcode.com/problems/binary-tree-postorder-traversal
298,Binary Tree Longest Consecutive Sequence,47.1%,Medium,0.14107859825990554, https://leetcode.com/problems/binary-tree-longest-consecutive-sequence
554,Brick Wall,50.0%,Medium,0.1384696742651052, https://leetcode.com/problems/brick-wall
1209,Remove All Adjacent Duplicates in String II,56.9%,Medium,0.13712574822724946, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
730,Count Different Palindromic Subsequences,41.8%,Hard,0.13133600206108695, https://leetcode.com/problems/count-different-palindromic-subsequences
62,Unique Paths,54.1%,Medium,0.1311257686834479, https://leetcode.com/problems/unique-paths
491,Increasing Subsequences,46.1%,Medium,0.12729023761403105, https://leetcode.com/problems/increasing-subsequences
11,Container With Most Water,50.8%,Medium,0.12204972242194584, https://leetcode.com/problems/container-with-most-water
1146,Snapshot Array,37.0%,Medium,0.12154546954921416, https://leetcode.com/problems/snapshot-array
446,Arithmetic Slices II - Subsequence,32.7%,Hard,0.12099331128663167, https://leetcode.com/problems/arithmetic-slices-ii-subsequence
228,Summary Ranges,39.5%,Medium,0.1207191114343526, https://leetcode.com/problems/summary-ranges
48,Rotate Image,56.7%,Medium,0.12019250461315692, https://leetcode.com/problems/rotate-image
848,Shifting Letters,44.6%,Medium,0.11918851726511835, https://leetcode.com/problems/shifting-letters
1439,Find the Kth Smallest Sum of a Matrix With Sorted Rows,59.5%,Hard,0.11918851726511835, https://leetcode.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows
345,Reverse Vowels of a String,44.2%,Easy,0.11903069645453873, https://leetcode.com/problems/reverse-vowels-of-a-string
284,Peeking Iterator,45.7%,Medium,0.11901099827011974, https://leetcode.com/problems/peeking-iterator
55,Jump Game,34.6%,Medium,0.11856598966987188, https://leetcode.com/problems/jump-game
776,Split BST,55.8%,Medium,0.11641035184441127, https://leetcode.com/problems/split-bst
1275,Find Winner on a Tic Tac Toe Game,52.8%,Easy,0.11536465479210183, https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game
94,Binary Tree Inorder Traversal,63.3%,Medium,0.11421050106466335, https://leetcode.com/problems/binary-tree-inorder-traversal
496,Next Greater Element I,63.8%,Easy,0.112972665603486, https://leetcode.com/problems/next-greater-element-i
1047,Remove All Adjacent Duplicates In String,68.6%,Easy,0.11181352460393465, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
655,Print Binary Tree,55.0%,Medium,0.11153609770197609, https://leetcode.com/problems/print-binary-tree
324,Wiggle Sort II,29.9%,Medium,0.11122563511022437, https://leetcode.com/problems/wiggle-sort-ii
382,Linked List Random Node,52.1%,Medium,0.11013564249600598, https://leetcode.com/problems/linked-list-random-node
153,Find Minimum in Rotated Sorted Array,45.1%,Medium,0.10780343710200306, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
889,Construct Binary Tree from Preorder and Postorder Traversal,66.2%,Medium,0.10711776476069794, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
966,Vowel Spellchecker,47.2%,Medium,0.10676797542570607, https://leetcode.com/problems/vowel-spellchecker
593,Valid Square,43.1%,Medium,0.10635752471349488, https://leetcode.com/problems/valid-square
392,Is Subsequence,49.2%,Easy,0.1060222459926442, https://leetcode.com/problems/is-subsequence
547,Friend Circles,58.6%,Medium,0.10502210097355241, https://leetcode.com/problems/friend-circles
773,Sliding Puzzle,59.3%,Hard,0.10294796925244239, https://leetcode.com/problems/sliding-puzzle
192,Word Frequency,25.8%,Medium,0.10186917331721722, https://leetcode.com/problems/word-frequency
1411,Number of Ways to Paint N × 3 Grid,61.1%,Hard,0.10135249426028749, https://leetcode.com/problems/number-of-ways-to-paint-n-3-grid
373,Find K Pairs with Smallest Sums,36.7%,Medium,0.10116008943995318, https://leetcode.com/problems/find-k-pairs-with-smallest-sums
417,Pacific Atlantic Water Flow,41.1%,Medium,0.10008345855698253, https://leetcode.com/problems/pacific-atlantic-water-flow
862,Shortest Subarray with Sum at Least K,24.6%,Hard,0.09793753498670578, https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k
752,Open the Lock,51.8%,Medium,0.09491410658218381, https://leetcode.com/problems/open-the-lock
716,Max Stack,42.6%,Easy,0.09362342046209744, https://leetcode.com/problems/max-stack
395,Longest Substring with At Least K Repeating Characters,41.4%,Medium,0.09358079943969791, https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
1062,Longest Repeating Substring,57.2%,Medium,0.09201889872025212, https://leetcode.com/problems/longest-repeating-substring
1077,Project Employees III,75.6%,Medium,0.0907652093142671, https://leetcode.com/problems/project-employees-iii
1132,Reported Posts II,34.4%,Medium,0.0903548750399561, https://leetcode.com/problems/reported-posts-ii
995,Minimum Number of K Consecutive Bit Flips,46.8%,Hard,0.08894748601649616, https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips
918,Maximum Sum Circular Subarray,33.7%,Medium,0.08881573371064024, https://leetcode.com/problems/maximum-sum-circular-subarray
16,3Sum Closest,46.0%,Medium,0.08850538159227012, https://leetcode.com/problems/3sum-closest
788,Rotated Digits,57.1%,Easy,0.08743429938967429, https://leetcode.com/problems/rotated-digits
981,Time Based Key-Value Store,53.1%,Medium,0.08621383525234454, https://leetcode.com/problems/time-based-key-value-store
1113,Reported Posts,64.1%,Easy,0.08552217343816201, https://leetcode.com/problems/reported-posts
916,Word Subsets,47.8%,Medium,0.08479653666007693, https://leetcode.com/problems/word-subsets
112,Path Sum,41.2%,Easy,0.08411629031776988, https://leetcode.com/problems/path-sum
151,Reverse Words in a String,21.9%,Medium,0.08300917461476963, https://leetcode.com/problems/reverse-words-in-a-string
550,Game Play Analysis IV,45.3%,Medium,0.08286311601350513, https://leetcode.com/problems/game-play-analysis-iv
101,Symmetric Tree,46.8%,Easy,0.08184524810424337, https://leetcode.com/problems/symmetric-tree
962,Maximum Width Ramp,45.4%,Medium,0.08184524810424337, https://leetcode.com/problems/maximum-width-ramp
884,Uncommon Words from Two Sentences,63.3%,Easy,0.07990051073053109, https://leetcode.com/problems/uncommon-words-from-two-sentences
250,Count Univalue Subtrees,52.0%,Medium,0.07975881838845024, https://leetcode.com/problems/count-univalue-subtrees
66,Plus One,43.0%,Easy,0.07852093407377625, https://leetcode.com/problems/plus-one
1003,Check If Word Is Valid After Substitutions,55.3%,Medium,0.07847161544149522, https://leetcode.com/problems/check-if-word-is-valid-after-substitutions
1254,Number of Closed Islands,60.5%,Medium,0.07796154146971186, https://leetcode.com/problems/number-of-closed-islands
210,Course Schedule II,40.7%,Medium,0.07762595476606639, https://leetcode.com/problems/course-schedule-ii
28,Implement strStr(),34.5%,Easy,0.07696835778992991, https://leetcode.com/problems/implement-strstr
1055,Shortest Way to Form String,56.9%,Medium,0.07681317776161672, https://leetcode.com/problems/shortest-way-to-form-string
778,Swim in Rising Water,53.1%,Hard,0.07651914983419623, https://leetcode.com/problems/swim-in-rising-water
7,Reverse Integer,25.8%,Easy,0.0757666422410048, https://leetcode.com/problems/reverse-integer
886,Possible Bipartition,44.2%,Medium,0.0751605712416521, https://leetcode.com/problems/possible-bipartition
639,Decode Ways II,26.6%,Hard,0.07424558998921052, https://leetcode.com/problems/decode-ways-ii
363,Max Sum of Rectangle No Larger Than K,37.3%,Hard,0.07410797215372188, https://leetcode.com/problems/max-sum-of-rectangle-no-larger-than-k
437,Path Sum III,47.2%,Medium,0.07349765782290693, https://leetcode.com/problems/path-sum-iii
1057,Campus Bikes,57.7%,Medium,0.07107786641655695, https://leetcode.com/problems/campus-bikes
723,Candy Crush,69.2%,Medium,0.06828590786613152, https://leetcode.com/problems/candy-crush
168,Excel Sheet Column Title,31.1%,Easy,0.0676504718923617, https://leetcode.com/problems/excel-sheet-column-title
338,Counting Bits,69.5%,Medium,0.06616169008990747, https://leetcode.com/problems/counting-bits
662,Maximum Width of Binary Tree,41.0%,Medium,0.06560589270959301, https://leetcode.com/problems/maximum-width-of-binary-tree
178,Rank Scores,45.8%,Medium,0.06551667145414991, https://leetcode.com/problems/rank-scores
191,Number of 1 Bits,49.8%,Easy,0.06532341835047967, https://leetcode.com/problems/number-of-1-bits
1142,User Activity for the Past 30 Days II,34.5%,Easy,0.06443452238546246, https://leetcode.com/problems/user-activity-for-the-past-30-days-ii
1108,Defanging an IP Address,87.5%,Easy,0.06413595621854226, https://leetcode.com/problems/defanging-an-ip-address
726,Number of Atoms,49.0%,Hard,0.06371581438610768, https://leetcode.com/problems/number-of-atoms
572,Subtree of Another Tree,44.1%,Easy,0.0636184974149243, https://leetcode.com/problems/subtree-of-another-tree
36,Valid Sudoku,48.7%,Medium,0.06350219850936348, https://leetcode.com/problems/valid-sudoku
68,Text Justification,27.7%,Hard,0.06116036187169583, https://leetcode.com/problems/text-justification
353,Design Snake Game,34.2%,Medium,0.06053284922884233, https://leetcode.com/problems/design-snake-game
159,Longest Substring with At Most Two Distinct Characters,49.4%,Medium,0.060138358738533404, https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters
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
1305,All Elements in Two Binary Search Trees,76.1%,Medium,0.05819353408024827, https://leetcode.com/problems/all-elements-in-two-binary-search-trees
410,Split Array Largest Sum,44.5%,Hard,0.05715841383994861, https://leetcode.com/problems/split-array-largest-sum
312,Burst Balloons,51.8%,Hard,0.056547726798068784, https://leetcode.com/problems/burst-balloons
41,First Missing Positive,32.0%,Hard,0.056273635982108605, https://leetcode.com/problems/first-missing-positive
679,24 Game,46.4%,Hard,0.05341723749698583, https://leetcode.com/problems/24-game
303,Range Sum Query - Immutable,44.7%,Easy,0.05194286677525062, https://leetcode.com/problems/range-sum-query-immutable
99,Recover Binary Search Tree,39.7%,Hard,0.051264071283762605, https://leetcode.com/problems/recover-binary-search-tree
681,Next Closest Time,45.0%,Medium,0.05045206096038863, https://leetcode.com/problems/next-closest-time
792,Number of Matching Subsequences,47.4%,Medium,0.04976150955906385, https://leetcode.com/problems/number-of-matching-subsequences
181,Employees Earning More Than Their Managers,56.9%,Easy,0.04954573655142984, https://leetcode.com/problems/employees-earning-more-than-their-managers
307,Range Sum Query - Mutable,34.6%,Medium,0.04935211978972769, https://leetcode.com/problems/range-sum-query-mutable
407,Trapping Rain Water II,42.4%,Hard,0.04797082778602956, https://leetcode.com/problems/trapping-rain-water-ii
1019,Next Greater Node In Linked List,57.4%,Medium,0.04795804429616222, https://leetcode.com/problems/next-greater-node-in-linked-list
6,ZigZag Conversion,36.3%,Medium,0.04724990737071425, https://leetcode.com/problems/zigzag-conversion
698,Partition to K Equal Sum Subsets,45.0%,Medium,0.04685917114094188, https://leetcode.com/problems/partition-to-k-equal-sum-subsets
654,Maximum Binary Tree,79.9%,Medium,0.045786227004095396, https://leetcode.com/problems/maximum-binary-tree
176,Second Highest Salary,31.6%,Easy,0.045338680589061736, https://leetcode.com/problems/second-highest-salary
90,Subsets II,47.1%,Medium,0.044888321248134265, https://leetcode.com/problems/subsets-ii
123,Best Time to Buy and Sell Stock III,37.5%,Hard,0.04430403389889214, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
525,Contiguous Array,42.8%,Medium,0.04390949261556855, https://leetcode.com/problems/contiguous-array
509,Fibonacci Number,67.2%,Easy,0.04365218172593638, https://leetcode.com/problems/fibonacci-number
1498,Number of Subsequences That Satisfy the Given Sum Condition,36.7%,Medium,0.04334372921647208, https://leetcode.com/problems/number-of-subsequences-that-satisfy-the-given-sum-condition
821,Shortest Distance to a Character,66.9%,Easy,0.043110123653728516, https://leetcode.com/problems/shortest-distance-to-a-character
611,Valid Triangle Number,48.4%,Medium,0.04255961441879593, https://leetcode.com/problems/valid-triangle-number
669,Trim a Binary Search Tree,63.0%,Easy,0.04255961441879593, https://leetcode.com/problems/trim-a-binary-search-tree
787,Cheapest Flights Within K Stops,39.3%,Medium,0.04186657939278993, https://leetcode.com/problems/cheapest-flights-within-k-stops
450,Delete Node in a BST,43.1%,Medium,0.041233509462184105, https://leetcode.com/problems/delete-node-in-a-bst
1219,Path with Maximum Gold,65.1%,Medium,0.04111576039097048, https://leetcode.com/problems/path-with-maximum-gold
652,Find Duplicate Subtrees,50.2%,Medium,0.040573516447166516, https://leetcode.com/problems/find-duplicate-subtrees
686,Repeated String Match,32.3%,Easy,0.03984590854719967, https://leetcode.com/problems/repeated-string-match
406,Queue Reconstruction by Height,66.9%,Medium,0.03949613834265583, https://leetcode.com/problems/queue-reconstruction-by-height
344,Reverse String,68.5%,Easy,0.0393340697038369, https://leetcode.com/problems/reverse-string
706,Design HashMap,61.3%,Easy,0.039016652342451774, https://leetcode.com/problems/design-hashmap
872,Leaf-Similar Trees,64.5%,Easy,0.03899974309382511, https://leetcode.com/problems/leaf-similar-trees
18,4Sum,33.7%,Medium,0.03880215185647971, https://leetcode.com/problems/4sum
241,Different Ways to Add Parentheses,55.2%,Medium,0.03880215185647971, https://leetcode.com/problems/different-ways-to-add-parentheses
402,Remove K Digits,28.4%,Medium,0.03755134565213245, https://leetcode.com/problems/remove-k-digits
1031,Maximum Sum of Two Non-Overlapping Subarrays,57.9%,Medium,0.03711000965123125, https://leetcode.com/problems/maximum-sum-of-two-non-overlapping-subarrays
646,Maximum Length of Pair Chain,51.9%,Medium,0.036870535808327706, https://leetcode.com/problems/maximum-length-of-pair-chain
628,Maximum Product of Three Numbers,47.1%,Easy,0.03681397312271631, https://leetcode.com/problems/maximum-product-of-three-numbers
376,Wiggle Subsequence,39.6%,Medium,0.03666771919188123, https://leetcode.com/problems/wiggle-subsequence
887,Super Egg Drop,27.1%,Hard,0.03660060864484636, https://leetcode.com/problems/super-egg-drop
9,Palindrome Number,48.4%,Easy,0.03659309116122965, https://leetcode.com/problems/palindrome-number
673,Number of Longest Increasing Subsequence,35.7%,Medium,0.036467121912812143, https://leetcode.com/problems/number-of-longest-increasing-subsequence
152,Maximum Product Subarray,31.7%,Medium,0.034438665054543384, https://leetcode.com/problems/maximum-product-subarray
63,Unique Paths II,34.6%,Medium,0.03440459729940371, https://leetcode.com/problems/unique-paths-ii
108,Convert Sorted Array to Binary Search Tree,57.9%,Easy,0.03421710570764629, https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.03403976010989293, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
1360,Number of Days Between Two Dates,48.8%,Easy,0.03401688527825427, https://leetcode.com/problems/number-of-days-between-two-dates
384,Shuffle an Array,52.8%,Medium,0.03399118781703353, https://leetcode.com/problems/shuffle-an-array
1287,Element Appearing More Than 25% In Sorted Array,60.2%,Easy,0.033033556829153404, https://leetcode.com/problems/element-appearing-more-than-25-in-sorted-array
315,Count of Smaller Numbers After Self,41.5%,Hard,0.03200842244384717, https://leetcode.com/problems/count-of-smaller-numbers-after-self
653,Two Sum IV - Input is a BST,55.5%,Easy,0.031726312677204306, https://leetcode.com/problems/two-sum-iv-input-is-a-bst
150,Evaluate Reverse Polish Notation,36.3%,Medium,0.031526253646773944, https://leetcode.com/problems/evaluate-reverse-polish-notation
371,Sum of Two Integers,50.7%,Medium,0.03137238814201745, https://leetcode.com/problems/sum-of-two-integers
222,Count Complete Tree Nodes,46.8%,Medium,0.031263400619043376, https://leetcode.com/problems/count-complete-tree-nodes
316,Remove Duplicate Letters,35.8%,Hard,0.030443751414723153, https://leetcode.com/problems/remove-duplicate-letters
70,Climbing Stairs,47.8%,Easy,0.03011156054328408, https://leetcode.com/problems/climbing-stairs
413,Arithmetic Slices,57.9%,Medium,0.028431197162004825, https://leetcode.com/problems/arithmetic-slices
77,Combinations,54.7%,Medium,0.028021758737593695, https://leetcode.com/problems/combinations
518,Coin Change 2,50.2%,Medium,0.027969505010125056, https://leetcode.com/problems/coin-change-2
110,Balanced Binary Tree,43.5%,Easy,0.02781820547653065, https://leetcode.com/problems/balanced-binary-tree
472,Concatenated Words,43.7%,Hard,0.027664281472355556, https://leetcode.com/problems/concatenated-words
118,Pascal's Triangle,52.5%,Easy,0.02673062594465844, https://leetcode.com/problems/pascals-triangle
1379,Find a Corresponding Node of a Binary Tree in a Clone of That Tree,83.8%,Medium,0.02645656953683045, https://leetcode.com/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
979,Distribute Coins in Binary Tree,68.9%,Medium,0.026196651946570663, https://leetcode.com/problems/distribute-coins-in-binary-tree
30,Substring with Concatenation of All Words,25.4%,Hard,0.02486144206532915, https://leetcode.com/problems/substring-with-concatenation-of-all-words
202,Happy Number,50.4%,Easy,0.02483442856330386, https://leetcode.com/problems/happy-number
104,Maximum Depth of Binary Tree,66.0%,Easy,0.024815169119723996, https://leetcode.com/problems/maximum-depth-of-binary-tree
605,Can Place Flowers,31.6%,Easy,0.02457126073050533, https://leetcode.com/problems/can-place-flowers
310,Minimum Height Trees,32.3%,Medium,0.02446605215440636, https://leetcode.com/problems/minimum-height-trees
714,Best Time to Buy and Sell Stock with Transaction Fee,54.7%,Medium,0.024258315059789946, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee
739,Daily Temperatures,63.3%,Medium,0.022433642692117093, https://leetcode.com/problems/daily-temperatures
72,Edit Distance,44.8%,Hard,0.022400140173127806, https://leetcode.com/problems/edit-distance
221,Maximal Square,37.7%,Medium,0.022108490754203434, https://leetcode.com/problems/maximal-square
113,Path Sum II,46.7%,Medium,0.021882711249507664, https://leetcode.com/problems/path-sum-ii
287,Find the Duplicate Number,55.5%,Medium,0.021825992579766168, https://leetcode.com/problems/find-the-duplicate-number
905,Sort Array By Parity,74.1%,Easy,0.02148053951675942, https://leetcode.com/problems/sort-array-by-parity
45,Jump Game II,30.6%,Hard,0.021353124470568974, https://leetcode.com/problems/jump-game-ii
1137,N-th Tribonacci Number,55.9%,Easy,0.02072613051711693, https://leetcode.com/problems/n-th-tribonacci-number
60,Permutation Sequence,38.4%,Hard,0.020471543980187256, https://leetcode.com/problems/permutation-sequence
203,Remove Linked List Elements,38.6%,Easy,0.01971101627650491, https://leetcode.com/problems/remove-linked-list-elements
229,Majority Element II,35.6%,Medium,0.019057270410286146, https://leetcode.com/problems/majority-element-ii
290,Word Pattern,37.0%,Easy,0.01839978311884168, https://leetcode.com/problems/word-pattern
38,Count and Say,44.6%,Easy,0.01753063983505879, https://leetcode.com/problems/count-and-say
993,Cousins in Binary Tree,52.0%,Easy,0.017414458368636587, https://leetcode.com/problems/cousins-in-binary-tree
1266,Minimum Time Visiting All Points,79.6%,Easy,0.017354014693151613, https://leetcode.com/problems/minimum-time-visiting-all-points
289,Game of Life,54.5%,Medium,0.0173239499317743, https://leetcode.com/problems/game-of-life
337,House Robber III,50.6%,Medium,0.017182553319996886, https://leetcode.com/problems/house-robber-iii
95,Unique Binary Search Trees II,40.6%,Medium,0.016856699181010838, https://leetcode.com/problems/unique-binary-search-trees-ii
997,Find the Town Judge,50.1%,Easy,0.01677891712910938, https://leetcode.com/problems/find-the-town-judge
188,Best Time to Buy and Sell Stock IV,28.0%,Hard,0.01651565203072114, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
1021,Remove Outermost Parentheses,78.0%,Easy,0.016434223613379935, https://leetcode.com/problems/remove-outermost-parentheses
1304,Find N Unique Integers Sum up to Zero,76.3%,Easy,0.015892269319508656, https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero
59,Spiral Matrix II,53.9%,Medium,0.01579187969789165, https://leetcode.com/problems/spiral-matrix-ii
701,Insert into a Binary Search Tree,77.7%,Medium,0.015522236371561826, https://leetcode.com/problems/insert-into-a-binary-search-tree
832,Flipping an Image,76.2%,Easy,0.014652276786870392, https://leetcode.com/problems/flipping-an-image
179,Largest Number,28.8%,Medium,0.013865040137171665, https://leetcode.com/problems/largest-number
64,Minimum Path Sum,54.5%,Medium,0.013734383449598314, https://leetcode.com/problems/minimum-path-sum
85,Maximal Rectangle,37.7%,Hard,0.013333530869465187, https://leetcode.com/problems/maximal-rectangle
154,Find Minimum in Rotated Sorted Array II,41.6%,Hard,0.013222109274363887, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii
451,Sort Characters By Frequency,63.0%,Medium,0.013153757558740521, https://leetcode.com/problems/sort-characters-by-frequency
226,Invert Binary Tree,65.0%,Easy,0.01235091863400913, https://leetcode.com/problems/invert-binary-tree
172,Factorial Trailing Zeroes,37.8%,Easy,0.012326812480658571, https://leetcode.com/problems/factorial-trailing-zeroes
130,Surrounded Regions,28.1%,Medium,0.011965443385675322, https://leetcode.com/problems/surrounded-regions
205,Isomorphic Strings,39.8%,Easy,0.011544139746865315, https://leetcode.com/problems/isomorphic-strings
69,Sqrt(x),33.9%,Easy,0.011443227222342794, https://leetcode.com/problems/sqrtx
733,Flood Fill,55.3%,Easy,0.011217167530924988, https://leetcode.com/problems/flood-fill
171,Excel Sheet Column Number,55.9%,Easy,0.011195191092491645, https://leetcode.com/problems/excel-sheet-column-number
234,Palindrome Linked List,39.3%,Easy,0.010171877938733932, https://leetcode.com/problems/palindrome-linked-list
61,Rotate List,30.0%,Medium,0.009925639799969955, https://leetcode.com/problems/rotate-list
96,Unique Binary Search Trees,52.9%,Medium,0.009242209964820877, https://leetcode.com/problems/unique-binary-search-trees
279,Perfect Squares,47.4%,Medium,0.009216655104924008, https://leetcode.com/problems/perfect-squares
1143,Longest Common Subsequence,58.4%,Medium,0.008835931134362285, https://leetcode.com/problems/longest-common-subsequence
100,Same Tree,53.4%,Easy,0.008767679087537476, https://leetcode.com/problems/same-tree
12,Integer to Roman,55.1%,Medium,0.008532474973720734, https://leetcode.com/problems/integer-to-roman
763,Partition Labels,76.1%,Medium,0.008385793376274025, https://leetcode.com/problems/partition-labels
84,Largest Rectangle in Histogram,35.2%,Hard,0.00833685528906183, https://leetcode.com/problems/largest-rectangle-in-histogram
260,Single Number III,64.3%,Medium,0.008090659020153698, https://leetcode.com/problems/single-number-iii
141,Linked List Cycle,41.1%,Easy,0.007843861028908454, https://leetcode.com/problems/linked-list-cycle
771,Jewels and Stones,86.4%,Easy,0.007284679819409419, https://leetcode.com/problems/jewels-and-stones
204,Count Primes,31.5%,Easy,0.007072165261362441, https://leetcode.com/problems/count-primes
83,Remove Duplicates from Sorted List,45.4%,Easy,0.006353261522609498, https://leetcode.com/problems/remove-duplicates-from-sorted-list
1528,Shuffle String,86.1%,Easy,0.006295047716793515, https://leetcode.com/problems/shuffle-string
167,Two Sum II - Input array is sorted,54.1%,Easy,0.005507380022589096, https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
106,Construct Binary Tree from Inorder and Postorder Traversal,47.2%,Medium,0.005258250021550252, https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
237,Delete Node in a Linked List,63.8%,Easy,0.005144705881237697, https://leetcode.com/problems/delete-node-in-a-linked-list
268,Missing Number,51.7%,Easy,0.0048804391649084865, https://leetcode.com/problems/missing-number
155,Min Stack,44.5%,Easy,0.00474891074128171, https://leetcode.com/problems/min-stack
322,Coin Change,35.5%,Medium,0.004029826126500844, https://leetcode.com/problems/coin-change
217,Contains Duplicate,56.0%,Easy,0.0037979536727587773, https://leetcode.com/problems/contains-duplicate
309,Best Time to Buy and Sell Stock with Cooldown,47.4%,Medium,0.0028498166907604426, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-cooldown
1 301 Remove Invalid Parentheses 43.3% Hard 4.335196687339778 https://leetcode.com/problems/remove-invalid-parentheses
2 953 Verifying an Alien Dictionary 54.1% Easy 4.206922996096642 https://leetcode.com/problems/verifying-an-alien-dictionary
3 273 Integer to English Words 27.1% Hard 4.078649304853506 https://leetcode.com/problems/integer-to-english-words
4 1249 Minimum Remove to Make Valid Parentheses 62.5% Medium 3.9503756136103707 https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
5 238 Product of Array Except Self 60.1% Medium 3.920816433231904 https://leetcode.com/problems/product-of-array-except-self
6 560 Subarray Sum Equals K 43.9% Medium 3.902938675359258 https://leetcode.com/problems/subarray-sum-equals-k
7 973 K Closest Points to Origin 63.8% Medium 3.837939583445208 https://leetcode.com/problems/k-closest-points-to-origin
8 680 Valid Palindrome II 36.6% Easy 3.743691921282678 https://leetcode.com/problems/valid-palindrome-ii
9 297 Serialize and Deserialize Binary Tree 47.5% Hard 3.615418230039542 https://leetcode.com/problems/serialize-and-deserialize-binary-tree
10 269 Alien Dictionary 33.3% Hard 3.4871445387964064 https://leetcode.com/problems/alien-dictionary
11 158 Read N Characters Given Read4 II - Call multiple times 33.8% Hard 3.434469283544648 https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times
12 253 Meeting Rooms II 45.7% Medium 3.427944872876946 https://leetcode.com/problems/meeting-rooms-ii
13 426 Convert Binary Search Tree to Sorted Doubly Linked List 59.1% Medium 3.4110516539651776 https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
14 124 Binary Tree Maximum Path Sum 34.3% Hard 3.282777962722042 https://leetcode.com/problems/binary-tree-maximum-path-sum
15 438 Find All Anagrams in a String 43.3% Medium 3.228312998479945 https://leetcode.com/problems/find-all-anagrams-in-a-string
16 125 Valid Palindrome 36.7% Easy 3.16695362968713 https://leetcode.com/problems/valid-palindrome
17 282 Expression Add Operators 35.5% Hard 3.161352879902371 https://leetcode.com/problems/expression-add-operators
18 278 First Bad Version 35.7% Easy 3.141715385559214 https://leetcode.com/problems/first-bad-version
19 523 Continuous Subarray Sum 24.6% Medium 3.134589355474442 https://leetcode.com/problems/continuous-subarray-sum
20 211 Add and Search Word - Data structure design 38.1% Medium 3.1233998390837767 https://leetcode.com/problems/add-and-search-word-data-structure-design
21 67 Add Binary 45.2% Easy 3.093426978305565 https://leetcode.com/problems/add-binary
22 173 Binary Search Tree Iterator 56.6% Medium 3.085972660150353 https://leetcode.com/problems/binary-search-tree-iterator
23 415 Add Strings 47.5% Easy 3.0354142430165405 https://leetcode.com/problems/add-strings
24 23 Merge k Sorted Lists 40.2% Hard 3.012005317142122 https://leetcode.com/problems/merge-k-sorted-lists
25 199 Binary Tree Right Side View 54.1% Medium 2.9712068716590117 https://leetcode.com/problems/binary-tree-right-side-view
26 76 Minimum Window Substring 34.6% Hard 2.903027697620134 https://leetcode.com/problems/minimum-window-substring
27 65 Valid Number 15.3% Hard 2.774754006376998 https://leetcode.com/problems/valid-number
28 215 Kth Largest Element in an Array 55.4% Medium 2.6975027548980828 https://leetcode.com/problems/kth-largest-element-in-an-array
29 31 Next Permutation 32.6% Medium 2.69746063524191 https://leetcode.com/problems/next-permutation
30 543 Diameter of Binary Tree 48.4% Easy 2.6227083482028957 https://leetcode.com/problems/diameter-of-binary-tree
31 636 Exclusive Time of Functions 51.9% Medium 2.6211064122306147 https://leetcode.com/problems/exclusive-time-of-functions
32 340 Longest Substring with At Most K Distinct Characters 44.1% Hard 2.6205141399271614 https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
33 785 Is Graph Bipartite? 47.5% Medium 2.559938999523321 https://leetcode.com/problems/is-graph-bipartite
34 56 Merge Intervals 39.3% Medium 2.5576573577289374 https://leetcode.com/problems/merge-intervals
35 314 Binary Tree Vertical Order Traversal 45.3% Medium 2.550800170263845 https://leetcode.com/problems/binary-tree-vertical-order-traversal
36 689 Maximum Sum of 3 Non-Overlapping Subarrays 46.3% Hard 2.51549898450556 https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays
37 986 Interval List Intersections 67.3% Medium 2.4093233466724615 https://leetcode.com/problems/interval-list-intersections
38 349 Intersection of Two Arrays 62.5% Easy 2.369718253147033 https://leetcode.com/problems/intersection-of-two-arrays
39 721 Accounts Merge 48.8% Medium 2.365752321622797 https://leetcode.com/problems/accounts-merge
40 133 Clone Graph 34.8% Medium 2.3193152747996915 https://leetcode.com/problems/clone-graph
41 29 Divide Two Integers 16.4% Medium 2.2326816570763848 https://leetcode.com/problems/divide-two-integers
42 88 Merge Sorted Array 39.4% Easy 2.213966373450817 https://leetcode.com/problems/merge-sorted-array
43 896 Monotonic Array 57.9% Easy 2.1852457458755925 https://leetcode.com/problems/monotonic-array
44 311 Sparse Matrix Multiplication 61.9% Medium 2.157267013499234 https://leetcode.com/problems/sparse-matrix-multiplication
45 34 Find First and Last Position of Element in Sorted Array 36.2% Medium 2.1199910717145767 https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
46 270 Closest Binary Search Tree Value 48.5% Easy 2.111207106216602 https://leetcode.com/problems/closest-binary-search-tree-value
47 236 Lowest Common Ancestor of a Binary Tree 45.7% Medium 2.102577038080218 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
48 304 Range Sum Query 2D - Immutable 38.6% Medium 2.090977201214256 https://leetcode.com/problems/range-sum-query-2d-immutable
49 98 Validate Binary Search Tree 27.8% Medium 2.0891962855012602 https://leetcode.com/problems/validate-binary-search-tree
50 621 Task Scheduler 50.1% Medium 2.042599452137005 https://leetcode.com/problems/task-scheduler
51 317 Shortest Distance from All Buildings 41.4% Hard 2.01991943083028 https://leetcode.com/problems/shortest-distance-from-all-buildings
52 398 Random Pick Index 56.0% Medium 2.008333871806795 https://leetcode.com/problems/random-pick-index
53 42 Trapping Rain Water 48.9% Hard 1.9873336630842446 https://leetcode.com/problems/trapping-rain-water
54 157 Read N Characters Given Read4 34.2% Easy 1.985241648938099 https://leetcode.com/problems/read-n-characters-given-read4
55 139 Word Break 40.1% Medium 1.8922941949982255 https://leetcode.com/problems/word-break
56 146 LRU Cache 33.2% Medium 1.8699827439738443 https://leetcode.com/problems/lru-cache
57 10 Regular Expression Matching 26.8% Hard 1.8647592081270254 https://leetcode.com/problems/regular-expression-matching
58 71 Simplify Path 32.6% Medium 1.8423694701144728 https://leetcode.com/problems/simplify-path
59 43 Multiply Strings 33.9% Medium 1.8392290485002738 https://leetcode.com/problems/multiply-strings
60 708 Insert into a Sorted Circular Linked List 31.6% Medium 1.8368993052205314 https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
61 15 3Sum 26.8% Medium 1.8210457271059735 https://leetcode.com/problems/3sum
62 33 Search in Rotated Sorted Array 34.5% Medium 1.820722356662543 https://leetcode.com/problems/search-in-rotated-sorted-array
63 958 Check Completeness of a Binary Tree 52.1% Medium 1.783474417693948 https://leetcode.com/problems/check-completeness-of-a-binary-tree
64 938 Range Sum of BST 81.3% Easy 1.7818897566437633 https://leetcode.com/problems/range-sum-of-bst
65 825 Friends Of Appropriate Ages 42.7% Medium 1.7740301628140611 https://leetcode.com/problems/friends-of-appropriate-ages
66 1428 Leftmost Column with at Least a One 46.8% Medium 1.7410939458816417 https://leetcode.com/problems/leftmost-column-with-at-least-a-one
67 143 Reorder List 37.1% Medium 1.7332983469419634 https://leetcode.com/problems/reorder-list
68 824 Goat Latin 63.4% Easy 1.732127219683092 https://leetcode.com/problems/goat-latin
69 286 Walls and Gates 54.5% Medium 1.6650077635889111 https://leetcode.com/problems/walls-and-gates
70 987 Vertical Order Traversal of a Binary Tree 36.6% Medium 1.6510344027543389 https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
71 121 Best Time to Buy and Sell Stock 50.5% Easy 1.6506540247828296 https://leetcode.com/problems/best-time-to-buy-and-sell-stock
72 277 Find the Celebrity 41.8% Medium 1.6067213396798519 https://leetcode.com/problems/find-the-celebrity
73 528 Random Pick with Weight 43.9% Medium 1.573847508711663 https://leetcode.com/problems/random-pick-with-weight
74 380 Insert Delete GetRandom O(1) 47.5% Medium 1.5587288098338494 https://leetcode.com/problems/insert-delete-getrandom-o1
75 161 One Edit Distance 32.3% Medium 1.5461666704459118 https://leetcode.com/problems/one-edit-distance
76 339 Nested List Weight Sum 74.0% Easy 1.5339303599259553 https://leetcode.com/problems/nested-list-weight-sum
77 767 Reorganize String 48.7% Medium 1.4877315278489756 https://leetcode.com/problems/reorganize-string
78 350 Intersection of Two Arrays II 51.4% Easy 1.4808978669832478 https://leetcode.com/problems/intersection-of-two-arrays-ii
79 227 Basic Calculator II 36.9% Medium 1.4808670150064625 https://leetcode.com/problems/basic-calculator-ii
80 246 Strobogrammatic Number 45.0% Easy 1.460594327130399 https://leetcode.com/problems/strobogrammatic-number
81 91 Decode Ways 24.7% Medium 1.459985348070545 https://leetcode.com/problems/decode-ways
82 670 Maximum Swap 43.6% Medium 1.4565677885079338 https://leetcode.com/problems/maximum-swap
83 1 Two Sum 45.6% Easy 1.4488825064262976 https://leetcode.com/problems/two-sum
84 162 Find Peak Element 43.3% Medium 1.4410277421297353 https://leetcode.com/problems/find-peak-element
85 200 Number of Islands 46.8% Medium 1.4234691396268788 https://leetcode.com/problems/number-of-islands
86 247 Strobogrammatic Number II 47.6% Medium 1.4154036932554577 https://leetcode.com/problems/strobogrammatic-number-ii
87 249 Group Shifted Strings 55.1% Medium 1.4075846503536702 https://leetcode.com/problems/group-shifted-strings
88 432 All O`one Data Structure 32.4% Hard 1.389408935384036 https://leetcode.com/problems/all-oone-data-structure
89 138 Copy List with Random Pointer 36.4% Medium 1.3877294433016032 https://leetcode.com/problems/copy-list-with-random-pointer
90 257 Binary Tree Paths 51.5% Easy 1.3511913085572316 https://leetcode.com/problems/binary-tree-paths
91 498 Diagonal Traverse 48.2% Medium 1.2592309745261798 https://leetcode.com/problems/diagonal-traverse
92 348 Design Tic-Tac-Toe 54.3% Medium 1.238658362313826 https://leetcode.com/problems/design-tic-tac-toe
93 1060 Missing Element in Sorted Array 54.5% Medium 1.2015522948374056 https://leetcode.com/problems/missing-element-in-sorted-array
94 463 Island Perimeter 65.7% Easy 1.1974645909616073 https://leetcode.com/problems/island-perimeter
95 1197 Minimum Knight Moves 36.1% Medium 1.1562032194143523 https://leetcode.com/problems/minimum-knight-moves
96 921 Minimum Add to Make Parentheses Valid 73.7% Medium 1.1523660079764306 https://leetcode.com/problems/minimum-add-to-make-parentheses-valid
97 766 Toeplitz Matrix 65.1% Easy 1.1255435578759945 https://leetcode.com/problems/toeplitz-matrix
98 20 Valid Parentheses 39.0% Easy 1.1000699309983533 https://leetcode.com/problems/valid-parentheses
99 419 Battleships in a Board 70.0% Medium 1.0742208355439504 https://leetcode.com/problems/battleships-in-a-board
100 109 Convert Sorted List to Binary Search Tree 47.7% Medium 1.072828171512395 https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
101 863 All Nodes Distance K in Binary Tree 55.4% Medium 1.0596708581592273 https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
102 658 Find K Closest Elements 40.9% Medium 1.0461722557435686 https://leetcode.com/problems/find-k-closest-elements
103 536 Construct Binary Tree from String 48.3% Medium 1.0281929964622412 https://leetcode.com/problems/construct-binary-tree-from-string
104 114 Flatten Binary Tree to Linked List 49.3% Medium 1.019434258955927 https://leetcode.com/problems/flatten-binary-tree-to-linked-list
105 50 Pow(x n) 30.3% Medium 0.9999968664707609 https://leetcode.com/problems/powx-n
106 865 Smallest Subtree with all the Deepest Nodes 60.8% Medium 0.9992659535205286 https://leetcode.com/problems/smallest-subtree-with-all-the-deepest-nodes
107 480 Sliding Window Median 37.2% Hard 0.9861751440709843 https://leetcode.com/problems/sliding-window-median
108 283 Move Zeroes 57.8% Easy 0.9799710505768641 https://leetcode.com/problems/move-zeroes
109 126 Word Ladder II 22.1% Hard 0.9702767208990074 https://leetcode.com/problems/word-ladder-ii
110 329 Longest Increasing Path in a Matrix 43.4% Hard 0.9678875215177066 https://leetcode.com/problems/longest-increasing-path-in-a-matrix
111 8 String to Integer (atoi) 15.4% Medium 0.9542977106716032 https://leetcode.com/problems/string-to-integer-atoi
112 1123 Lowest Common Ancestor of Deepest Leaves 66.8% Medium 0.9426391836226029 https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
113 674 Longest Continuous Increasing Subsequence 45.9% Easy 0.937643856344724 https://leetcode.com/problems/longest-continuous-increasing-subsequence
114 32 Longest Valid Parentheses 28.4% Hard 0.9348811561799546 https://leetcode.com/problems/longest-valid-parentheses
115 1004 Max Consecutive Ones III 59.1% Medium 0.9227276214905304 https://leetcode.com/problems/max-consecutive-ones-iii
116 791 Custom Sort String 65.7% Medium 0.9193484785821322 https://leetcode.com/problems/custom-sort-string
117 678 Valid Parenthesis String 31.0% Medium 0.9043878930155473 https://leetcode.com/problems/valid-parenthesis-string
118 336 Palindrome Pairs 33.7% Hard 0.8971409526507793 https://leetcode.com/problems/palindrome-pairs
119 3 Longest Substring Without Repeating Characters 30.4% Medium 0.8953752760627052 https://leetcode.com/problems/longest-substring-without-repeating-characters
120 616 Add Bold Tag in String 43.1% Medium 0.8724465334959766 https://leetcode.com/problems/add-bold-tag-in-string
121 647 Palindromic Substrings 60.6% Medium 0.8682112403653768 https://leetcode.com/problems/palindromic-substrings
122 224 Basic Calculator 36.8% Hard 0.8569364892249722 https://leetcode.com/problems/basic-calculator
123 494 Target Sum 46.3% Medium 0.8526861460071543 https://leetcode.com/problems/target-sum
124 22 Generate Parentheses 62.7% Medium 0.8495119409673674 https://leetcode.com/problems/generate-parentheses
125 1027 Longest Arithmetic Sequence 53.4% Medium 0.832909122935104 https://leetcode.com/problems/longest-arithmetic-sequence
126 1026 Maximum Difference Between Node and Ancestor 66.0% Medium 0.8326883967450455 https://leetcode.com/problems/maximum-difference-between-node-and-ancestor
127 341 Flatten Nested List Iterator 52.9% Medium 0.8292610077755705 https://leetcode.com/problems/flatten-nested-list-iterator
128 1216 Valid Palindrome III 47.8% Hard 0.8187244879431477 https://leetcode.com/problems/valid-palindrome-iii
129 452 Minimum Number of Arrows to Burst Balloons 49.6% Medium 0.8171437319197754 https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons
130 468 Validate IP Address 24.1% Medium 0.8167611365271219 https://leetcode.com/problems/validate-ip-address
131 885 Spiral Matrix III 69.4% Medium 0.7976598792954321 https://leetcode.com/problems/spiral-matrix-iii
132 378 Kth Smallest Element in a Sorted Matrix 54.3% Medium 0.774853894374 https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
133 416 Partition Equal Subset Sum 43.7% Medium 0.7672162050787574 https://leetcode.com/problems/partition-equal-subset-sum
134 489 Robot Room Cleaner 69.7% Hard 0.7609230442143258 https://leetcode.com/problems/robot-room-cleaner
135 25 Reverse Nodes in k-Group 42.1% Hard 0.7568915065003623 https://leetcode.com/problems/reverse-nodes-in-k-group
136 78 Subsets 62.0% Medium 0.7567934361936809 https://leetcode.com/problems/subsets
137 449 Serialize and Deserialize BST 52.0% Medium 0.7481106198504164 https://leetcode.com/problems/serialize-and-deserialize-bst
138 622 Design Circular Queue 43.8% Medium 0.7481106198504164 https://leetcode.com/problems/design-circular-queue
139 567 Permutation in String 44.4% Medium 0.736255715579399 https://leetcode.com/problems/permutation-in-string
140 266 Palindrome Permutation 61.9% Easy 0.7234683742749072 https://leetcode.com/problems/palindrome-permutation
141 381 Insert Delete GetRandom O(1) - Duplicates allowed 34.1% Hard 0.7223768188748837 https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed
142 772 Basic Calculator III 41.3% Hard 0.7157652691477178 https://leetcode.com/problems/basic-calculator-iii
143 408 Valid Word Abbreviation 30.6% Easy 0.682218110027755 https://leetcode.com/problems/valid-word-abbreviation
144 57 Insert Interval 33.5% Hard 0.6699349836634878 https://leetcode.com/problems/insert-interval
145 540 Single Element in a Sorted Array 57.9% Medium 0.6681029057556921 https://leetcode.com/problems/single-element-in-a-sorted-array
146 163 Missing Ranges 24.3% Medium 0.6673264809382026 https://leetcode.com/problems/missing-ranges
147 325 Maximum Size Subarray Sum Equals k 46.8% Medium 0.6580558607486752 https://leetcode.com/problems/maximum-size-subarray-sum-equals-k
148 529 Minesweeper 59.1% Medium 0.6503908125743563 https://leetcode.com/problems/minesweeper
149 839 Similar String Groups 38.6% Hard 0.6425949013971141 https://leetcode.com/problems/similar-string-groups
150 490 The Maze 51.4% Medium 0.6350863559329611 https://leetcode.com/problems/the-maze
151 568 Maximum Vacation Days 40.8% Hard 0.633385446017691 https://leetcode.com/problems/maximum-vacation-days
152 166 Fraction to Recurring Decimal 21.6% Medium 0.6206038478805173 https://leetcode.com/problems/fraction-to-recurring-decimal
153 93 Restore IP Addresses 35.6% Medium 0.6115646985544299 https://leetcode.com/problems/restore-ip-addresses
154 207 Course Schedule 43.1% Medium 0.6103117404763498 https://leetcode.com/problems/course-schedule
155 251 Flatten 2D Vector 45.7% Medium 0.6100265562802061 https://leetcode.com/problems/flatten-2d-vector
156 1094 Car Pooling 56.7% Medium 0.6042711750233518 https://leetcode.com/problems/car-pooling
157 53 Maximum Subarray 46.5% Easy 0.6015398665839413 https://leetcode.com/problems/maximum-subarray
158 2 Add Two Numbers 33.9% Medium 0.5977271417553114 https://leetcode.com/problems/add-two-numbers
159 939 Minimum Area Rectangle 51.8% Medium 0.5793532707737441 https://leetcode.com/problems/minimum-area-rectangle
160 332 Reconstruct Itinerary 36.7% Medium 0.5760996776571121 https://leetcode.com/problems/reconstruct-itinerary
161 319 Bulb Switcher 45.4% Medium 0.5639354490799391 https://leetcode.com/problems/bulb-switcher
162 692 Top K Frequent Words 51.8% Medium 0.5621453229350715 https://leetcode.com/problems/top-k-frequent-words
163 347 Top K Frequent Elements 61.2% Medium 0.5611438666741244 https://leetcode.com/problems/top-k-frequent-elements
164 935 Knight Dialer 45.2% Medium 0.5465437063680699 https://leetcode.com/problems/knight-dialer
165 127 Word Ladder 29.6% Medium 0.5455963628062589 https://leetcode.com/problems/word-ladder
166 963 Minimum Area Rectangle II 50.9% Medium 0.5446366736089481 https://leetcode.com/problems/minimum-area-rectangle-ii
167 477 Total Hamming Distance 50.4% Medium 0.5168845792337272 https://leetcode.com/problems/total-hamming-distance
168 248 Strobogrammatic Number III 39.6% Hard 0.5138062519041285 https://leetcode.com/problems/strobogrammatic-number-iii
169 92 Reverse Linked List II 38.8% Medium 0.5133381879018739 https://leetcode.com/problems/reverse-linked-list-ii
170 394 Decode String 50.0% Medium 0.5093485186229775 https://leetcode.com/problems/decode-string
171 75 Sort Colors 47.3% Medium 0.5079686937722695 https://leetcode.com/problems/sort-colors
172 140 Word Break II 32.6% Hard 0.5015389381977866 https://leetcode.com/problems/word-break-ii
173 117 Populating Next Right Pointers in Each Node II 39.1% Medium 0.4973329437215165 https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
174 13 Roman to Integer 55.7% Easy 0.48610209879675464 https://leetcode.com/problems/roman-to-integer
175 405 Convert a Number to Hexadecimal 43.9% Easy 0.4744855160464951 https://leetcode.com/problems/convert-a-number-to-hexadecimal
176 844 Backspace String Compare 46.4% Easy 0.46741819242485527 https://leetcode.com/problems/backspace-string-compare
177 934 Shortest Bridge 48.2% Medium 0.46228336275033 https://leetcode.com/problems/shortest-bridge
178 691 Stickers to Spell Word 42.9% Hard 0.4602156228795727 https://leetcode.com/problems/stickers-to-spell-word
179 5 Longest Palindromic Substring 29.5% Medium 0.46006363834709674 https://leetcode.com/problems/longest-palindromic-substring
180 358 Rearrange String k Distance Apart 34.9% Hard 0.4583075894825443 https://leetcode.com/problems/rearrange-string-k-distance-apart
181 1213 Intersection of Three Sorted Arrays 78.9% Easy 0.45778473187961194 https://leetcode.com/problems/intersection-of-three-sorted-arrays
182 1269 Number of Ways to Stay in the Same Place After Some Steps 43.2% Hard 0.4557571315683002 https://leetcode.com/problems/number-of-ways-to-stay-in-the-same-place-after-some-steps
183 428 Serialize and Deserialize N-ary Tree 59.4% Hard 0.4508337131380154 https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
184 548 Split Array with Equal Sum 46.4% Medium 0.448122872401898 https://leetcode.com/problems/split-array-with-equal-sum
185 977 Squares of a Sorted Array 72.1% Easy 0.44558510189758965 https://leetcode.com/problems/squares-of-a-sorted-array
186 46 Permutations 63.5% Medium 0.44390547933455826 https://leetcode.com/problems/permutations
187 387 First Unique Character in a String 53.4% Easy 0.44127087243911367 https://leetcode.com/problems/first-unique-character-in-a-string
188 240 Search a 2D Matrix II 43.2% Medium 0.438224237725094 https://leetcode.com/problems/search-a-2d-matrix-ii
189 695 Max Area of Island 62.7% Medium 0.43140512911678014 https://leetcode.com/problems/max-area-of-island
190 17 Letter Combinations of a Phone Number 46.8% Medium 0.42775086183255473 https://leetcode.com/problems/letter-combinations-of-a-phone-number
191 694 Number of Distinct Islands 56.0% Medium 0.4274440148269396 https://leetcode.com/problems/number-of-distinct-islands
192 1233 Remove Sub-Folders from the Filesystem 59.5% Medium 0.4243747624654565 https://leetcode.com/problems/remove-sub-folders-from-the-filesystem
193 239 Sliding Window Maximum 43.0% Hard 0.4104750065235096 https://leetcode.com/problems/sliding-window-maximum
194 597 Friend Requests I: Overall Acceptance Rate 41.0% Easy 0.39908695436741093 https://leetcode.com/problems/friend-requests-i-overall-acceptance-rate
195 364 Nested List Weight Sum II 62.8% Medium 0.3968580334554196 https://leetcode.com/problems/nested-list-weight-sum-ii
196 742 Closest Leaf in a Binary Tree 43.6% Medium 0.38378938262912404 https://leetcode.com/problems/closest-leaf-in-a-binary-tree
197 230 Kth Smallest Element in a BST 60.2% Medium 0.37791604408658863 https://leetcode.com/problems/kth-smallest-element-in-a-bst
198 632 Smallest Range Covering Elements from K Lists 52.4% Hard 0.37755631999108785 https://leetcode.com/problems/smallest-range-covering-elements-from-k-lists
199 875 Koko Eating Bananas 52.1% Medium 0.37067899202274884 https://leetcode.com/problems/koko-eating-bananas
200 128 Longest Consecutive Sequence 45.1% Hard 0.36849388991868803 https://leetcode.com/problems/longest-consecutive-sequence
201 1032 Stream of Characters 48.3% Hard 0.35736199308977074 https://leetcode.com/problems/stream-of-characters
202 44 Wildcard Matching 24.7% Hard 0.34881383996175425 https://leetcode.com/problems/wildcard-matching
203 116 Populating Next Right Pointers in Each Node 45.2% Medium 0.34657253966731805 https://leetcode.com/problems/populating-next-right-pointers-in-each-node
204 39 Combination Sum 56.1% Medium 0.34653485590252786 https://leetcode.com/problems/combination-sum
205 21 Merge Two Sorted Lists 53.5% Easy 0.34463115505721625 https://leetcode.com/problems/merge-two-sorted-lists
206 855 Exam Room 43.1% Medium 0.34442921752179523 https://leetcode.com/problems/exam-room
207 105 Construct Binary Tree from Preorder and Inorder Traversal 48.8% Medium 0.3420203241032511 https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
208 334 Increasing Triplet Subsequence 40.0% Medium 0.33981980987317617 https://leetcode.com/problems/increasing-triplet-subsequence
209 102 Binary Tree Level Order Traversal 54.6% Medium 0.3378514215595053 https://leetcode.com/problems/binary-tree-level-order-traversal
210 400 Nth Digit 31.7% Medium 0.33647223662121295 https://leetcode.com/problems/nth-digit
211 73 Set Matrix Zeroes 43.1% Medium 0.3336019272255533 https://leetcode.com/problems/set-matrix-zeroes
212 515 Find Largest Value in Each Tree Row 61.1% Medium 0.32956374627740126 https://leetcode.com/problems/find-largest-value-in-each-tree-row
213 333 Largest BST Subtree 35.8% Medium 0.32931497055013925 https://leetcode.com/problems/largest-bst-subtree
214 827 Making A Large Island 45.7% Hard 0.32879599515977564 https://leetcode.com/problems/making-a-large-island
215 295 Find Median from Data Stream 44.3% Hard 0.32347449067924283 https://leetcode.com/problems/find-median-from-data-stream
216 137 Single Number II 52.4% Medium 0.32305590883561364 https://leetcode.com/problems/single-number-ii
217 549 Binary Tree Longest Consecutive Sequence II 47.0% Medium 0.31383478526224007 https://leetcode.com/problems/binary-tree-longest-consecutive-sequence-ii
218 1242 Web Crawler Multithreaded 45.9% Medium 0.30961714931803663 https://leetcode.com/problems/web-crawler-multithreaded
219 285 Inorder Successor in BST 40.4% Medium 0.3084972403983375 https://leetcode.com/problems/inorder-successor-in-bst
220 346 Moving Average from Data Stream 70.9% Easy 0.3081922191359908 https://leetcode.com/problems/moving-average-from-data-stream
221 614 Second Degree Follower 30.3% Medium 0.3030501026800949 https://leetcode.com/problems/second-degree-follower
222 564 Find the Closest Palindrome 19.7% Hard 0.3007541540191337 https://leetcode.com/problems/find-the-closest-palindrome
223 1245 Tree Diameter 60.1% Medium 0.29849298855599654 https://leetcode.com/problems/tree-diameter
224 936 Stamping The Sequence 42.8% Hard 0.2972515234679316 https://leetcode.com/problems/stamping-the-sequence
225 51 N-Queens 46.6% Hard 0.28871459706597014 https://leetcode.com/problems/n-queens
226 1424 Diagonal Traverse II 42.4% Medium 0.28406186115878557 https://leetcode.com/problems/diagonal-traverse-ii
227 111 Minimum Depth of Binary Tree 37.4% Easy 0.2817695765670001 https://leetcode.com/problems/minimum-depth-of-binary-tree
228 430 Flatten a Multilevel Doubly Linked List 55.1% Medium 0.2782260520687776 https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
229 129 Sum Root to Leaf Numbers 49.1% Medium 0.27802016154004405 https://leetcode.com/problems/sum-root-to-leaf-numbers
230 399 Evaluate Division 51.6% Medium 0.27239954676797734 https://leetcode.com/problems/evaluate-division
231 214 Shortest Palindrome 29.8% Hard 0.2723477084516743 https://leetcode.com/problems/shortest-palindrome
232 49 Group Anagrams 56.9% Medium 0.2690483662746409 https://leetcode.com/problems/group-anagrams
233 300 Longest Increasing Subsequence 42.6% Medium 0.25998614206252363 https://leetcode.com/problems/longest-increasing-subsequence
234 663 Equal Tree Partition 39.5% Medium 0.2578291093020998 https://leetcode.com/problems/equal-tree-partition
235 609 Find Duplicate File in System 59.5% Medium 0.25388017696233983 https://leetcode.com/problems/find-duplicate-file-in-system
236 206 Reverse Linked List 62.5% Easy 0.24955592841391872 https://leetcode.com/problems/reverse-linked-list
237 703 Kth Largest Element in a Stream 49.7% Easy 0.24952447488654275 https://leetcode.com/problems/kth-largest-element-in-a-stream
238 724 Find Pivot Index 44.0% Easy 0.2487542034447554 https://leetcode.com/problems/find-pivot-index
239 54 Spiral Matrix 34.1% Medium 0.2464878617937269 https://leetcode.com/problems/spiral-matrix
240 19 Remove Nth Node From End of List 35.2% Medium 0.24535686887589467 https://leetcode.com/problems/remove-nth-node-from-end-of-list
241 208 Implement Trie (Prefix Tree) 49.4% Medium 0.24427699389743987 https://leetcode.com/problems/implement-trie-prefix-tree
242 308 Range Sum Query 2D - Mutable 35.6% Hard 0.24116205681688807 https://leetcode.com/problems/range-sum-query-2d-mutable
243 296 Best Meeting Point 57.5% Hard 0.23670108287626285 https://leetcode.com/problems/best-meeting-point
244 26 Remove Duplicates from Sorted Array 45.1% Easy 0.2297722482453755 https://leetcode.com/problems/remove-duplicates-from-sorted-array
245 291 Word Pattern II 43.4% Hard 0.22825865198098017 https://leetcode.com/problems/word-pattern-ii
246 305 Number of Islands II 40.1% Hard 0.22128423872402644 https://leetcode.com/problems/number-of-islands-ii
247 212 Word Search II 34.9% Hard 0.22101415243595443 https://leetcode.com/problems/word-search-ii
248 393 UTF-8 Validation 37.5% Medium 0.2166710368085923 https://leetcode.com/problems/utf-8-validation
249 40 Combination Sum II 48.2% Medium 0.21560801183996 https://leetcode.com/problems/combination-sum-ii
250 79 Word Search 35.6% Medium 0.21504688290625537 https://leetcode.com/problems/word-search
251 81 Search in Rotated Sorted Array II 33.0% Medium 0.21357410029805904 https://leetcode.com/problems/search-in-rotated-sorted-array-ii
252 74 Search a 2D Matrix 36.5% Medium 0.2107726489416756 https://leetcode.com/problems/search-a-2d-matrix
253 1053 Previous Permutation With One Swap 48.5% Medium 0.20909179785855941 https://leetcode.com/problems/previous-permutation-with-one-swap
254 218 The Skyline Problem 34.6% Hard 0.20884831112738325 https://leetcode.com/problems/the-skyline-problem
255 1008 Construct Binary Search Tree from Preorder Traversal 78.4% Medium 0.2053974398608136 https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal
256 37 Sudoku Solver 43.6% Hard 0.20309089276282075 https://leetcode.com/problems/sudoku-solver
257 983 Minimum Cost For Tickets 60.5% Medium 0.2028261131996316 https://leetcode.com/problems/minimum-cost-for-tickets
258 443 String Compression 41.3% Easy 0.2021974133159511 https://leetcode.com/problems/string-compression
259 4 Median of Two Sorted Arrays 29.6% Hard 0.19869709834201 https://leetcode.com/problems/median-of-two-sorted-arrays
260 352 Data Stream as Disjoint Intervals 47.3% Hard 0.1980128865886302 https://leetcode.com/problems/data-stream-as-disjoint-intervals
261 637 Average of Levels in Binary Tree 63.1% Easy 0.1972664368553499 https://leetcode.com/problems/average-of-levels-in-binary-tree
262 794 Valid Tic-Tac-Toe State 32.6% Medium 0.19671029424605424 https://leetcode.com/problems/valid-tic-tac-toe-state
263 252 Meeting Rooms 54.6% Easy 0.19259310711578434 https://leetcode.com/problems/meeting-rooms
264 272 Closest Binary Search Tree Value II 50.5% Hard 0.1920777317393193 https://leetcode.com/problems/closest-binary-search-tree-value-ii
265 160 Intersection of Two Linked Lists 40.6% Easy 0.18862763579294656 https://leetcode.com/problems/intersection-of-two-linked-lists
266 235 Lowest Common Ancestor of a Binary Search Tree 49.9% Easy 0.18753347368046405 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
267 242 Valid Anagram 56.9% Easy 0.18562894775162106 https://leetcode.com/problems/valid-anagram
268 852 Peak Index in a Mountain Array 71.6% Easy 0.18496356625679328 https://leetcode.com/problems/peak-index-in-a-mountain-array
269 969 Pancake Sorting 67.5% Medium 0.18336922582639836 https://leetcode.com/problems/pancake-sorting
270 1091 Shortest Path in Binary Matrix 38.2% Medium 0.18312509239363786 https://leetcode.com/problems/shortest-path-in-binary-matrix
271 323 Number of Connected Components in an Undirected Graph 56.0% Medium 0.18178978331691914 https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph
272 759 Employee Free Time 66.3% Hard 0.1816986978513639 https://leetcode.com/problems/employee-free-time
273 388 Longest Absolute File Path 41.8% Medium 0.18128582392042256 https://leetcode.com/problems/longest-absolute-file-path
274 445 Add Two Numbers II 54.5% Medium 0.1810800917058897 https://leetcode.com/problems/add-two-numbers-ii
275 641 Design Circular Deque 52.7% Medium 0.1769307081590782 https://leetcode.com/problems/design-circular-deque
276 556 Next Greater Element III 31.7% Medium 0.1753110123077373 https://leetcode.com/problems/next-greater-element-iii
277 24 Swap Nodes in Pairs 50.4% Medium 0.1729418749687828 https://leetcode.com/problems/swap-nodes-in-pairs
278 223 Rectangle Area 37.8% Medium 0.172469260350943 https://leetcode.com/problems/rectangle-area
279 442 Find All Duplicates in an Array 67.8% Medium 0.17219015650505717 https://leetcode.com/problems/find-all-duplicates-in-an-array
280 843 Guess the Word 46.1% Hard 0.17062551703076334 https://leetcode.com/problems/guess-the-word
281 136 Single Number 65.5% Easy 0.16883202978332956 https://leetcode.com/problems/single-number
282 148 Sort List 42.3% Medium 0.16575313044672194 https://leetcode.com/problems/sort-list
283 280 Wiggle Sort 63.8% Medium 0.16413412381144152 https://leetcode.com/problems/wiggle-sort
284 642 Design Search Autocomplete System 44.7% Hard 0.16312782492496253 https://leetcode.com/problems/design-search-autocomplete-system
285 435 Non-overlapping Intervals 42.9% Medium 0.16281358156492662 https://leetcode.com/problems/non-overlapping-intervals
286 503 Next Greater Element II 56.5% Medium 0.15815434954605545 https://leetcode.com/problems/next-greater-element-ii
287 209 Minimum Size Subarray Sum 38.2% Medium 0.1579457507958099 https://leetcode.com/problems/minimum-size-subarray-sum
288 189 Rotate Array 34.7% Easy 0.1575195768933631 https://leetcode.com/problems/rotate-array
289 414 Third Maximum Number 30.5% Easy 0.15407631103237035 https://leetcode.com/problems/third-maximum-number
290 505 The Maze II 47.7% Medium 0.15388658369473163 https://leetcode.com/problems/the-maze-ii
291 122 Best Time to Buy and Sell Stock II 57.0% Easy 0.1524210743225689 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
292 403 Frog Jump 39.7% Hard 0.1519909531790461 https://leetcode.com/problems/frog-jump
293 676 Implement Magic Dictionary 54.5% Medium 0.15104025741286586 https://leetcode.com/problems/implement-magic-dictionary
294 14 Longest Common Prefix 35.4% Easy 0.15097420446868728 https://leetcode.com/problems/longest-common-prefix
295 602 Friend Requests II: Who Has the Most Friends 53.4% Medium 0.14928324354899083 https://leetcode.com/problems/friend-requests-ii-who-has-the-most-friends
296 478 Generate Random Point in a Circle 38.5% Medium 0.14897379164772453 https://leetcode.com/problems/generate-random-point-in-a-circle
297 360 Sort Transformed Array 48.8% Medium 0.14624550032014502 https://leetcode.com/problems/sort-transformed-array
298 688 Knight Probability in Chessboard 48.9% Medium 0.14465605390747982 https://leetcode.com/problems/knight-probability-in-chessboard
299 328 Odd Even Linked List 55.7% Medium 0.14442996827561513 https://leetcode.com/problems/odd-even-linked-list
300 145 Binary Tree Postorder Traversal 55.0% Hard 0.14214495289159543 https://leetcode.com/problems/binary-tree-postorder-traversal
301 298 Binary Tree Longest Consecutive Sequence 47.1% Medium 0.14107859825990554 https://leetcode.com/problems/binary-tree-longest-consecutive-sequence
302 554 Brick Wall 50.0% Medium 0.1384696742651052 https://leetcode.com/problems/brick-wall
303 1209 Remove All Adjacent Duplicates in String II 56.9% Medium 0.13712574822724946 https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
304 730 Count Different Palindromic Subsequences 41.8% Hard 0.13133600206108695 https://leetcode.com/problems/count-different-palindromic-subsequences
305 62 Unique Paths 54.1% Medium 0.1311257686834479 https://leetcode.com/problems/unique-paths
306 491 Increasing Subsequences 46.1% Medium 0.12729023761403105 https://leetcode.com/problems/increasing-subsequences
307 11 Container With Most Water 50.8% Medium 0.12204972242194584 https://leetcode.com/problems/container-with-most-water
308 1146 Snapshot Array 37.0% Medium 0.12154546954921416 https://leetcode.com/problems/snapshot-array
309 446 Arithmetic Slices II - Subsequence 32.7% Hard 0.12099331128663167 https://leetcode.com/problems/arithmetic-slices-ii-subsequence
310 228 Summary Ranges 39.5% Medium 0.1207191114343526 https://leetcode.com/problems/summary-ranges
311 48 Rotate Image 56.7% Medium 0.12019250461315692 https://leetcode.com/problems/rotate-image
312 848 Shifting Letters 44.6% Medium 0.11918851726511835 https://leetcode.com/problems/shifting-letters
313 1439 Find the Kth Smallest Sum of a Matrix With Sorted Rows 59.5% Hard 0.11918851726511835 https://leetcode.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows
314 345 Reverse Vowels of a String 44.2% Easy 0.11903069645453873 https://leetcode.com/problems/reverse-vowels-of-a-string
315 284 Peeking Iterator 45.7% Medium 0.11901099827011974 https://leetcode.com/problems/peeking-iterator
316 55 Jump Game 34.6% Medium 0.11856598966987188 https://leetcode.com/problems/jump-game
317 776 Split BST 55.8% Medium 0.11641035184441127 https://leetcode.com/problems/split-bst
318 1275 Find Winner on a Tic Tac Toe Game 52.8% Easy 0.11536465479210183 https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game
319 94 Binary Tree Inorder Traversal 63.3% Medium 0.11421050106466335 https://leetcode.com/problems/binary-tree-inorder-traversal
320 496 Next Greater Element I 63.8% Easy 0.112972665603486 https://leetcode.com/problems/next-greater-element-i
321 1047 Remove All Adjacent Duplicates In String 68.6% Easy 0.11181352460393465 https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
322 655 Print Binary Tree 55.0% Medium 0.11153609770197609 https://leetcode.com/problems/print-binary-tree
323 324 Wiggle Sort II 29.9% Medium 0.11122563511022437 https://leetcode.com/problems/wiggle-sort-ii
324 382 Linked List Random Node 52.1% Medium 0.11013564249600598 https://leetcode.com/problems/linked-list-random-node
325 153 Find Minimum in Rotated Sorted Array 45.1% Medium 0.10780343710200306 https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
326 889 Construct Binary Tree from Preorder and Postorder Traversal 66.2% Medium 0.10711776476069794 https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
327 966 Vowel Spellchecker 47.2% Medium 0.10676797542570607 https://leetcode.com/problems/vowel-spellchecker
328 593 Valid Square 43.1% Medium 0.10635752471349488 https://leetcode.com/problems/valid-square
329 392 Is Subsequence 49.2% Easy 0.1060222459926442 https://leetcode.com/problems/is-subsequence
330 547 Friend Circles 58.6% Medium 0.10502210097355241 https://leetcode.com/problems/friend-circles
331 773 Sliding Puzzle 59.3% Hard 0.10294796925244239 https://leetcode.com/problems/sliding-puzzle
332 192 Word Frequency 25.8% Medium 0.10186917331721722 https://leetcode.com/problems/word-frequency
333 1411 Number of Ways to Paint N × 3 Grid 61.1% Hard 0.10135249426028749 https://leetcode.com/problems/number-of-ways-to-paint-n-3-grid
334 373 Find K Pairs with Smallest Sums 36.7% Medium 0.10116008943995318 https://leetcode.com/problems/find-k-pairs-with-smallest-sums
335 417 Pacific Atlantic Water Flow 41.1% Medium 0.10008345855698253 https://leetcode.com/problems/pacific-atlantic-water-flow
336 862 Shortest Subarray with Sum at Least K 24.6% Hard 0.09793753498670578 https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k
337 752 Open the Lock 51.8% Medium 0.09491410658218381 https://leetcode.com/problems/open-the-lock
338 716 Max Stack 42.6% Easy 0.09362342046209744 https://leetcode.com/problems/max-stack
339 395 Longest Substring with At Least K Repeating Characters 41.4% Medium 0.09358079943969791 https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
340 1062 Longest Repeating Substring 57.2% Medium 0.09201889872025212 https://leetcode.com/problems/longest-repeating-substring
341 1077 Project Employees III 75.6% Medium 0.0907652093142671 https://leetcode.com/problems/project-employees-iii
342 1132 Reported Posts II 34.4% Medium 0.0903548750399561 https://leetcode.com/problems/reported-posts-ii
343 995 Minimum Number of K Consecutive Bit Flips 46.8% Hard 0.08894748601649616 https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips
344 918 Maximum Sum Circular Subarray 33.7% Medium 0.08881573371064024 https://leetcode.com/problems/maximum-sum-circular-subarray
345 16 3Sum Closest 46.0% Medium 0.08850538159227012 https://leetcode.com/problems/3sum-closest
346 788 Rotated Digits 57.1% Easy 0.08743429938967429 https://leetcode.com/problems/rotated-digits
347 981 Time Based Key-Value Store 53.1% Medium 0.08621383525234454 https://leetcode.com/problems/time-based-key-value-store
348 1113 Reported Posts 64.1% Easy 0.08552217343816201 https://leetcode.com/problems/reported-posts
349 916 Word Subsets 47.8% Medium 0.08479653666007693 https://leetcode.com/problems/word-subsets
350 112 Path Sum 41.2% Easy 0.08411629031776988 https://leetcode.com/problems/path-sum
351 151 Reverse Words in a String 21.9% Medium 0.08300917461476963 https://leetcode.com/problems/reverse-words-in-a-string
352 550 Game Play Analysis IV 45.3% Medium 0.08286311601350513 https://leetcode.com/problems/game-play-analysis-iv
353 101 Symmetric Tree 46.8% Easy 0.08184524810424337 https://leetcode.com/problems/symmetric-tree
354 962 Maximum Width Ramp 45.4% Medium 0.08184524810424337 https://leetcode.com/problems/maximum-width-ramp
355 884 Uncommon Words from Two Sentences 63.3% Easy 0.07990051073053109 https://leetcode.com/problems/uncommon-words-from-two-sentences
356 250 Count Univalue Subtrees 52.0% Medium 0.07975881838845024 https://leetcode.com/problems/count-univalue-subtrees
357 66 Plus One 43.0% Easy 0.07852093407377625 https://leetcode.com/problems/plus-one
358 1003 Check If Word Is Valid After Substitutions 55.3% Medium 0.07847161544149522 https://leetcode.com/problems/check-if-word-is-valid-after-substitutions
359 1254 Number of Closed Islands 60.5% Medium 0.07796154146971186 https://leetcode.com/problems/number-of-closed-islands
360 210 Course Schedule II 40.7% Medium 0.07762595476606639 https://leetcode.com/problems/course-schedule-ii
361 28 Implement strStr() 34.5% Easy 0.07696835778992991 https://leetcode.com/problems/implement-strstr
362 1055 Shortest Way to Form String 56.9% Medium 0.07681317776161672 https://leetcode.com/problems/shortest-way-to-form-string
363 778 Swim in Rising Water 53.1% Hard 0.07651914983419623 https://leetcode.com/problems/swim-in-rising-water
364 7 Reverse Integer 25.8% Easy 0.0757666422410048 https://leetcode.com/problems/reverse-integer
365 886 Possible Bipartition 44.2% Medium 0.0751605712416521 https://leetcode.com/problems/possible-bipartition
366 639 Decode Ways II 26.6% Hard 0.07424558998921052 https://leetcode.com/problems/decode-ways-ii
367 363 Max Sum of Rectangle No Larger Than K 37.3% Hard 0.07410797215372188 https://leetcode.com/problems/max-sum-of-rectangle-no-larger-than-k
368 437 Path Sum III 47.2% Medium 0.07349765782290693 https://leetcode.com/problems/path-sum-iii
369 1057 Campus Bikes 57.7% Medium 0.07107786641655695 https://leetcode.com/problems/campus-bikes
370 723 Candy Crush 69.2% Medium 0.06828590786613152 https://leetcode.com/problems/candy-crush
371 168 Excel Sheet Column Title 31.1% Easy 0.0676504718923617 https://leetcode.com/problems/excel-sheet-column-title
372 338 Counting Bits 69.5% Medium 0.06616169008990747 https://leetcode.com/problems/counting-bits
373 662 Maximum Width of Binary Tree 41.0% Medium 0.06560589270959301 https://leetcode.com/problems/maximum-width-of-binary-tree
374 178 Rank Scores 45.8% Medium 0.06551667145414991 https://leetcode.com/problems/rank-scores
375 191 Number of 1 Bits 49.8% Easy 0.06532341835047967 https://leetcode.com/problems/number-of-1-bits
376 1142 User Activity for the Past 30 Days II 34.5% Easy 0.06443452238546246 https://leetcode.com/problems/user-activity-for-the-past-30-days-ii
377 1108 Defanging an IP Address 87.5% Easy 0.06413595621854226 https://leetcode.com/problems/defanging-an-ip-address
378 726 Number of Atoms 49.0% Hard 0.06371581438610768 https://leetcode.com/problems/number-of-atoms
379 572 Subtree of Another Tree 44.1% Easy 0.0636184974149243 https://leetcode.com/problems/subtree-of-another-tree
380 36 Valid Sudoku 48.7% Medium 0.06350219850936348 https://leetcode.com/problems/valid-sudoku
381 68 Text Justification 27.7% Hard 0.06116036187169583 https://leetcode.com/problems/text-justification
382 353 Design Snake Game 34.2% Medium 0.06053284922884233 https://leetcode.com/problems/design-snake-game
383 159 Longest Substring with At Most Two Distinct Characters 49.4% Medium 0.060138358738533404 https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters
384 47 Permutations II 46.4% Medium 0.05897935516253239 https://leetcode.com/problems/permutations-ii
385 516 Longest Palindromic Subsequence 53.2% Medium 0.058432099871092734 https://leetcode.com/problems/longest-palindromic-subsequence
386 1305 All Elements in Two Binary Search Trees 76.1% Medium 0.05819353408024827 https://leetcode.com/problems/all-elements-in-two-binary-search-trees
387 410 Split Array Largest Sum 44.5% Hard 0.05715841383994861 https://leetcode.com/problems/split-array-largest-sum
388 312 Burst Balloons 51.8% Hard 0.056547726798068784 https://leetcode.com/problems/burst-balloons
389 41 First Missing Positive 32.0% Hard 0.056273635982108605 https://leetcode.com/problems/first-missing-positive
390 679 24 Game 46.4% Hard 0.05341723749698583 https://leetcode.com/problems/24-game
391 303 Range Sum Query - Immutable 44.7% Easy 0.05194286677525062 https://leetcode.com/problems/range-sum-query-immutable
392 99 Recover Binary Search Tree 39.7% Hard 0.051264071283762605 https://leetcode.com/problems/recover-binary-search-tree
393 681 Next Closest Time 45.0% Medium 0.05045206096038863 https://leetcode.com/problems/next-closest-time
394 792 Number of Matching Subsequences 47.4% Medium 0.04976150955906385 https://leetcode.com/problems/number-of-matching-subsequences
395 181 Employees Earning More Than Their Managers 56.9% Easy 0.04954573655142984 https://leetcode.com/problems/employees-earning-more-than-their-managers
396 307 Range Sum Query - Mutable 34.6% Medium 0.04935211978972769 https://leetcode.com/problems/range-sum-query-mutable
397 407 Trapping Rain Water II 42.4% Hard 0.04797082778602956 https://leetcode.com/problems/trapping-rain-water-ii
398 1019 Next Greater Node In Linked List 57.4% Medium 0.04795804429616222 https://leetcode.com/problems/next-greater-node-in-linked-list
399 6 ZigZag Conversion 36.3% Medium 0.04724990737071425 https://leetcode.com/problems/zigzag-conversion
400 698 Partition to K Equal Sum Subsets 45.0% Medium 0.04685917114094188 https://leetcode.com/problems/partition-to-k-equal-sum-subsets
401 654 Maximum Binary Tree 79.9% Medium 0.045786227004095396 https://leetcode.com/problems/maximum-binary-tree
402 176 Second Highest Salary 31.6% Easy 0.045338680589061736 https://leetcode.com/problems/second-highest-salary
403 90 Subsets II 47.1% Medium 0.044888321248134265 https://leetcode.com/problems/subsets-ii
404 123 Best Time to Buy and Sell Stock III 37.5% Hard 0.04430403389889214 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
405 525 Contiguous Array 42.8% Medium 0.04390949261556855 https://leetcode.com/problems/contiguous-array
406 509 Fibonacci Number 67.2% Easy 0.04365218172593638 https://leetcode.com/problems/fibonacci-number
407 1498 Number of Subsequences That Satisfy the Given Sum Condition 36.7% Medium 0.04334372921647208 https://leetcode.com/problems/number-of-subsequences-that-satisfy-the-given-sum-condition
408 821 Shortest Distance to a Character 66.9% Easy 0.043110123653728516 https://leetcode.com/problems/shortest-distance-to-a-character
409 611 Valid Triangle Number 48.4% Medium 0.04255961441879593 https://leetcode.com/problems/valid-triangle-number
410 669 Trim a Binary Search Tree 63.0% Easy 0.04255961441879593 https://leetcode.com/problems/trim-a-binary-search-tree
411 787 Cheapest Flights Within K Stops 39.3% Medium 0.04186657939278993 https://leetcode.com/problems/cheapest-flights-within-k-stops
412 450 Delete Node in a BST 43.1% Medium 0.041233509462184105 https://leetcode.com/problems/delete-node-in-a-bst
413 1219 Path with Maximum Gold 65.1% Medium 0.04111576039097048 https://leetcode.com/problems/path-with-maximum-gold
414 652 Find Duplicate Subtrees 50.2% Medium 0.040573516447166516 https://leetcode.com/problems/find-duplicate-subtrees
415 686 Repeated String Match 32.3% Easy 0.03984590854719967 https://leetcode.com/problems/repeated-string-match
416 406 Queue Reconstruction by Height 66.9% Medium 0.03949613834265583 https://leetcode.com/problems/queue-reconstruction-by-height
417 344 Reverse String 68.5% Easy 0.0393340697038369 https://leetcode.com/problems/reverse-string
418 706 Design HashMap 61.3% Easy 0.039016652342451774 https://leetcode.com/problems/design-hashmap
419 872 Leaf-Similar Trees 64.5% Easy 0.03899974309382511 https://leetcode.com/problems/leaf-similar-trees
420 18 4Sum 33.7% Medium 0.03880215185647971 https://leetcode.com/problems/4sum
421 241 Different Ways to Add Parentheses 55.2% Medium 0.03880215185647971 https://leetcode.com/problems/different-ways-to-add-parentheses
422 402 Remove K Digits 28.4% Medium 0.03755134565213245 https://leetcode.com/problems/remove-k-digits
423 1031 Maximum Sum of Two Non-Overlapping Subarrays 57.9% Medium 0.03711000965123125 https://leetcode.com/problems/maximum-sum-of-two-non-overlapping-subarrays
424 646 Maximum Length of Pair Chain 51.9% Medium 0.036870535808327706 https://leetcode.com/problems/maximum-length-of-pair-chain
425 628 Maximum Product of Three Numbers 47.1% Easy 0.03681397312271631 https://leetcode.com/problems/maximum-product-of-three-numbers
426 376 Wiggle Subsequence 39.6% Medium 0.03666771919188123 https://leetcode.com/problems/wiggle-subsequence
427 887 Super Egg Drop 27.1% Hard 0.03660060864484636 https://leetcode.com/problems/super-egg-drop
428 9 Palindrome Number 48.4% Easy 0.03659309116122965 https://leetcode.com/problems/palindrome-number
429 673 Number of Longest Increasing Subsequence 35.7% Medium 0.036467121912812143 https://leetcode.com/problems/number-of-longest-increasing-subsequence
430 152 Maximum Product Subarray 31.7% Medium 0.034438665054543384 https://leetcode.com/problems/maximum-product-subarray
431 63 Unique Paths II 34.6% Medium 0.03440459729940371 https://leetcode.com/problems/unique-paths-ii
432 108 Convert Sorted Array to Binary Search Tree 57.9% Easy 0.03421710570764629 https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
433 103 Binary Tree Zigzag Level Order Traversal 48.3% Medium 0.03403976010989293 https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
434 1360 Number of Days Between Two Dates 48.8% Easy 0.03401688527825427 https://leetcode.com/problems/number-of-days-between-two-dates
435 384 Shuffle an Array 52.8% Medium 0.03399118781703353 https://leetcode.com/problems/shuffle-an-array
436 1287 Element Appearing More Than 25% In Sorted Array 60.2% Easy 0.033033556829153404 https://leetcode.com/problems/element-appearing-more-than-25-in-sorted-array
437 315 Count of Smaller Numbers After Self 41.5% Hard 0.03200842244384717 https://leetcode.com/problems/count-of-smaller-numbers-after-self
438 653 Two Sum IV - Input is a BST 55.5% Easy 0.031726312677204306 https://leetcode.com/problems/two-sum-iv-input-is-a-bst
439 150 Evaluate Reverse Polish Notation 36.3% Medium 0.031526253646773944 https://leetcode.com/problems/evaluate-reverse-polish-notation
440 371 Sum of Two Integers 50.7% Medium 0.03137238814201745 https://leetcode.com/problems/sum-of-two-integers
441 222 Count Complete Tree Nodes 46.8% Medium 0.031263400619043376 https://leetcode.com/problems/count-complete-tree-nodes
442 316 Remove Duplicate Letters 35.8% Hard 0.030443751414723153 https://leetcode.com/problems/remove-duplicate-letters
443 70 Climbing Stairs 47.8% Easy 0.03011156054328408 https://leetcode.com/problems/climbing-stairs
444 413 Arithmetic Slices 57.9% Medium 0.028431197162004825 https://leetcode.com/problems/arithmetic-slices
445 77 Combinations 54.7% Medium 0.028021758737593695 https://leetcode.com/problems/combinations
446 518 Coin Change 2 50.2% Medium 0.027969505010125056 https://leetcode.com/problems/coin-change-2
447 110 Balanced Binary Tree 43.5% Easy 0.02781820547653065 https://leetcode.com/problems/balanced-binary-tree
448 472 Concatenated Words 43.7% Hard 0.027664281472355556 https://leetcode.com/problems/concatenated-words
449 118 Pascal's Triangle 52.5% Easy 0.02673062594465844 https://leetcode.com/problems/pascals-triangle
450 1379 Find a Corresponding Node of a Binary Tree in a Clone of That Tree 83.8% Medium 0.02645656953683045 https://leetcode.com/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
451 979 Distribute Coins in Binary Tree 68.9% Medium 0.026196651946570663 https://leetcode.com/problems/distribute-coins-in-binary-tree
452 30 Substring with Concatenation of All Words 25.4% Hard 0.02486144206532915 https://leetcode.com/problems/substring-with-concatenation-of-all-words
453 202 Happy Number 50.4% Easy 0.02483442856330386 https://leetcode.com/problems/happy-number
454 104 Maximum Depth of Binary Tree 66.0% Easy 0.024815169119723996 https://leetcode.com/problems/maximum-depth-of-binary-tree
455 605 Can Place Flowers 31.6% Easy 0.02457126073050533 https://leetcode.com/problems/can-place-flowers
456 310 Minimum Height Trees 32.3% Medium 0.02446605215440636 https://leetcode.com/problems/minimum-height-trees
457 714 Best Time to Buy and Sell Stock with Transaction Fee 54.7% Medium 0.024258315059789946 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee
458 739 Daily Temperatures 63.3% Medium 0.022433642692117093 https://leetcode.com/problems/daily-temperatures
459 72 Edit Distance 44.8% Hard 0.022400140173127806 https://leetcode.com/problems/edit-distance
460 221 Maximal Square 37.7% Medium 0.022108490754203434 https://leetcode.com/problems/maximal-square
461 113 Path Sum II 46.7% Medium 0.021882711249507664 https://leetcode.com/problems/path-sum-ii
462 287 Find the Duplicate Number 55.5% Medium 0.021825992579766168 https://leetcode.com/problems/find-the-duplicate-number
463 905 Sort Array By Parity 74.1% Easy 0.02148053951675942 https://leetcode.com/problems/sort-array-by-parity
464 45 Jump Game II 30.6% Hard 0.021353124470568974 https://leetcode.com/problems/jump-game-ii
465 1137 N-th Tribonacci Number 55.9% Easy 0.02072613051711693 https://leetcode.com/problems/n-th-tribonacci-number
466 60 Permutation Sequence 38.4% Hard 0.020471543980187256 https://leetcode.com/problems/permutation-sequence
467 203 Remove Linked List Elements 38.6% Easy 0.01971101627650491 https://leetcode.com/problems/remove-linked-list-elements
468 229 Majority Element II 35.6% Medium 0.019057270410286146 https://leetcode.com/problems/majority-element-ii
469 290 Word Pattern 37.0% Easy 0.01839978311884168 https://leetcode.com/problems/word-pattern
470 38 Count and Say 44.6% Easy 0.01753063983505879 https://leetcode.com/problems/count-and-say
471 993 Cousins in Binary Tree 52.0% Easy 0.017414458368636587 https://leetcode.com/problems/cousins-in-binary-tree
472 1266 Minimum Time Visiting All Points 79.6% Easy 0.017354014693151613 https://leetcode.com/problems/minimum-time-visiting-all-points
473 289 Game of Life 54.5% Medium 0.0173239499317743 https://leetcode.com/problems/game-of-life
474 337 House Robber III 50.6% Medium 0.017182553319996886 https://leetcode.com/problems/house-robber-iii
475 95 Unique Binary Search Trees II 40.6% Medium 0.016856699181010838 https://leetcode.com/problems/unique-binary-search-trees-ii
476 997 Find the Town Judge 50.1% Easy 0.01677891712910938 https://leetcode.com/problems/find-the-town-judge
477 188 Best Time to Buy and Sell Stock IV 28.0% Hard 0.01651565203072114 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
478 1021 Remove Outermost Parentheses 78.0% Easy 0.016434223613379935 https://leetcode.com/problems/remove-outermost-parentheses
479 1304 Find N Unique Integers Sum up to Zero 76.3% Easy 0.015892269319508656 https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero
480 59 Spiral Matrix II 53.9% Medium 0.01579187969789165 https://leetcode.com/problems/spiral-matrix-ii
481 701 Insert into a Binary Search Tree 77.7% Medium 0.015522236371561826 https://leetcode.com/problems/insert-into-a-binary-search-tree
482 832 Flipping an Image 76.2% Easy 0.014652276786870392 https://leetcode.com/problems/flipping-an-image
483 179 Largest Number 28.8% Medium 0.013865040137171665 https://leetcode.com/problems/largest-number
484 64 Minimum Path Sum 54.5% Medium 0.013734383449598314 https://leetcode.com/problems/minimum-path-sum
485 85 Maximal Rectangle 37.7% Hard 0.013333530869465187 https://leetcode.com/problems/maximal-rectangle
486 154 Find Minimum in Rotated Sorted Array II 41.6% Hard 0.013222109274363887 https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii
487 451 Sort Characters By Frequency 63.0% Medium 0.013153757558740521 https://leetcode.com/problems/sort-characters-by-frequency
488 226 Invert Binary Tree 65.0% Easy 0.01235091863400913 https://leetcode.com/problems/invert-binary-tree
489 172 Factorial Trailing Zeroes 37.8% Easy 0.012326812480658571 https://leetcode.com/problems/factorial-trailing-zeroes
490 130 Surrounded Regions 28.1% Medium 0.011965443385675322 https://leetcode.com/problems/surrounded-regions
491 205 Isomorphic Strings 39.8% Easy 0.011544139746865315 https://leetcode.com/problems/isomorphic-strings
492 69 Sqrt(x) 33.9% Easy 0.011443227222342794 https://leetcode.com/problems/sqrtx
493 733 Flood Fill 55.3% Easy 0.011217167530924988 https://leetcode.com/problems/flood-fill
494 171 Excel Sheet Column Number 55.9% Easy 0.011195191092491645 https://leetcode.com/problems/excel-sheet-column-number
495 234 Palindrome Linked List 39.3% Easy 0.010171877938733932 https://leetcode.com/problems/palindrome-linked-list
496 61 Rotate List 30.0% Medium 0.009925639799969955 https://leetcode.com/problems/rotate-list
497 96 Unique Binary Search Trees 52.9% Medium 0.009242209964820877 https://leetcode.com/problems/unique-binary-search-trees
498 279 Perfect Squares 47.4% Medium 0.009216655104924008 https://leetcode.com/problems/perfect-squares
499 1143 Longest Common Subsequence 58.4% Medium 0.008835931134362285 https://leetcode.com/problems/longest-common-subsequence
500 100 Same Tree 53.4% Easy 0.008767679087537476 https://leetcode.com/problems/same-tree
501 12 Integer to Roman 55.1% Medium 0.008532474973720734 https://leetcode.com/problems/integer-to-roman
502 763 Partition Labels 76.1% Medium 0.008385793376274025 https://leetcode.com/problems/partition-labels
503 84 Largest Rectangle in Histogram 35.2% Hard 0.00833685528906183 https://leetcode.com/problems/largest-rectangle-in-histogram
504 260 Single Number III 64.3% Medium 0.008090659020153698 https://leetcode.com/problems/single-number-iii
505 141 Linked List Cycle 41.1% Easy 0.007843861028908454 https://leetcode.com/problems/linked-list-cycle
506 771 Jewels and Stones 86.4% Easy 0.007284679819409419 https://leetcode.com/problems/jewels-and-stones
507 204 Count Primes 31.5% Easy 0.007072165261362441 https://leetcode.com/problems/count-primes
508 83 Remove Duplicates from Sorted List 45.4% Easy 0.006353261522609498 https://leetcode.com/problems/remove-duplicates-from-sorted-list
509 1528 Shuffle String 86.1% Easy 0.006295047716793515 https://leetcode.com/problems/shuffle-string
510 167 Two Sum II - Input array is sorted 54.1% Easy 0.005507380022589096 https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
511 106 Construct Binary Tree from Inorder and Postorder Traversal 47.2% Medium 0.005258250021550252 https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
512 237 Delete Node in a Linked List 63.8% Easy 0.005144705881237697 https://leetcode.com/problems/delete-node-in-a-linked-list
513 268 Missing Number 51.7% Easy 0.0048804391649084865 https://leetcode.com/problems/missing-number
514 155 Min Stack 44.5% Easy 0.00474891074128171 https://leetcode.com/problems/min-stack
515 322 Coin Change 35.5% Medium 0.004029826126500844 https://leetcode.com/problems/coin-change
516 217 Contains Duplicate 56.0% Easy 0.0037979536727587773 https://leetcode.com/problems/contains-duplicate
517 309 Best Time to Buy and Sell Stock with Cooldown 47.4% Medium 0.0028498166907604426 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-cooldown