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- 734
- Sentence Similarity
- 41.1% Easy
- 737
- Sentence Similarity II
- 44.3% Medium
- 753
- Cracking the Safe 48.5% Hard
- 2
- Add Two Numbers 32.0% Medium
- 88
- Merge Sorted Array 37.1% Easy
- 1
- Two Sum 44.6% Easy
- 543
- Diameter of Binary Tree 47.6% Easy
- 124
- Binary Tree Maximum Path Sum 31.3% Hard
- 226
- Invert Binary Tree 60.0% Easy
- 731
- My Calendar II 46.4% Medium
- 399
- Evaluate Division 49.0% Medium
- 98
- Validate Binary Search Tree 26.5% Medium
- 236
- Lowest Common Ancestor of a Binary Tree 40.3% Medium
- 299
- Bulls and Cows 40.6% Easy
- 139
- Word Break 37.0% Medium
- 31
- Next Permutation 31.2% Medium
- 146
- LRU Cache 27.9% Medium
- 4
- Median of Two Sorted Arrays 27.5% Hard
- 686
- Repeated String Match 31.8% Easy
- 130
- Surrounded Regions 24.3% Medium
- 769
- Max Chunks To Make Sorted 52.8% Medium
- 162
- Find Peak Element 42.0% Medium
- 66
- Plus One 41.7% Easy
- 205
- Isomorphic Strings 38.4% Easy
- 394
- Decode String 46.8% Medium
- 20
- Valid Parentheses 37.4% Easy
- 448
- Find All Numbers Disappeared in an Array 54.4% Easy
- 403
- Frog Jump 37.3% Hard
- 56
- Merge Intervals 36.9% Medium
- 75
- Sort Colors 43.5% Medium
- 482
- License Key Formatting 41.8% Easy
- 777
- Swap Adjacent in LR String 34.0% Medium
- 36
- Valid Sudoku 45.2% Medium
- 767
- Reorganize String 44.3% Medium
- 117
- Populating Next Right Pointers in Each Node II 35.9% Medium
- 332
- Reconstruct Itinerary 32.9% Medium
- 642
- Design Search Autocomplete System
- 40.4% Hard
- 208
- Implement Trie (Prefix Tree) 41.3% Medium
- 53
- Maximum Subarray 44.8% Easy
- 116
- Populating Next Right Pointers in Each Node 39.9% Medium
- 215
- Kth Largest Element in an Array 50.4% Medium
- 347
- Top K Frequent Elements 57.1% Medium
- 766
- Toeplitz Matrix 62.6% Easy
- 3
- Longest Substring Without Repeating Characters 29.0% Medium
- 785
- Is Graph Bipartite? 45.0% Medium
- 524
- Longest Word in Dictionary through Deleting 46.8% Medium
- 159
- Longest Substring with At Most Two Distinct Characters
- 48.0% Hard
- 252
- Meeting Rooms
- 53.1% Easy
- 46
- Permutations 58.0% Medium
- 5
- Longest Palindromic Substring 28.1% Medium
- 308
- Range Sum Query 2D - Mutable
- 33.3% Hard
- 772
- Basic Calculator III
- 41.4% Hard
- 685
- Redundant Connection II 31.5% Hard
- 297
- Serialize and Deserialize Binary Tree 43.1% Hard
- 125
- Valid Palindrome 32.7% Easy
- 11
- Container With Most Water 47.2% Medium
- 328
- Odd Even Linked List 50.7% Medium
- 269
- Alien Dictionary
- 32.7% Hard
- 241
- Different Ways to Add Parentheses 51.9% Medium
- 271
- Encode and Decode Strings
- 28.4% Medium
- 387
- First Unique Character in a String 50.8% Easy
- 158
- Read N Characters Given Read4 II - Call multiple times
- 28.6% Hard
- 17
- Letter Combinations of a Phone Number 43.4% Medium
- 490
- The Maze
- 48.9% Medium
- 67
- Add Binary 40.9% Easy
- 350
- Intersection of Two Arrays II 49.3% Easy
- 206
- Reverse Linked List 57.4% Easy
- 149
- Max Points on a Line 16.2% Hard
- 729
- My Calendar I 48.9% Medium
- 289
- Game of Life 48.7% Medium
- 369
- Plus One Linked List
- 57.0% Medium
- 54
- Spiral Matrix 31.8% Medium
- 818
- Race Car 36.8% Hard
- 742
- Closest Leaf in a Binary Tree
- 40.9% Medium
- 72
- Edit Distance 39.8% Hard
- 79
- Word Search 32.7% Medium
- 529
- Minesweeper 54.9% Medium
- 253
- Meeting Rooms II
- 43.9% Medium
- 76
- Minimum Window Substring 32.2% Hard
- 43
- Multiply Strings 31.8% Medium
- 198
- House Robber 41.4% Easy
- 33
- Search in Rotated Sorted Array 33.3% Medium
- 23
- Merge k Sorted Lists 36.5% Hard
- 307
- Range Sum Query - Mutable 30.7% Medium
- 465
- Optimal Account Balancing
- 44.3% Hard
- 315
- Count of Smaller Numbers After Self 39.7% Hard
- 7
- Reverse Integer 25.5% Easy
- 140
- Word Break II 28.5% Hard
- 353
- Design Snake Game
- 31.8% Medium
- 49
- Group Anagrams 50.1% Medium
- 679
- 24 Game 44.0% Hard
- 41
- First Missing Positive 30.0% Hard
- 632
- Smallest Range Covering Elements from K Lists 49.6% Hard
- 238
- Product of Array Except Self 57.1% Medium
- 42
- Trapping Rain Water 45.2% Hard
- 127
- Word Ladder 26.0% Medium
- 268
- Missing Number 49.4% Easy
- 833
- Find And Replace in String 47.9% Medium
- 659
- Split Array into Consecutive Subsequences 41.8% Medium
- 26
- Remove Duplicates from Sorted Array 42.2% Easy
- 57
- Insert Interval 31.9% Hard
- 334
- Increasing Triplet Subsequence 39.7% Medium
- 287
- Find the Duplicate Number 51.4% Medium
- 285
- Inorder Successor in BST
- 36.7% Medium
- 380
- Insert Delete GetRandom O(1) 44.1% Medium
- 844
- Backspace String Compare 46.7% Easy
- 91
- Decode Ways 23.0% Medium
- 739
- Daily Temperatures 60.9% Medium
- 69
- Sqrt(x) 32.3% Easy
- 150
- Evaluate Reverse Polish Notation 33.7% Medium
- 155
- Min Stack 39.2% Easy
- 843
- Guess the Word 45.1% Hard
- 359
- Logger Rate Limiter
- 67.1% Easy
- 304
- Range Sum Query 2D - Immutable 34.6% Medium
- 849
- Maximize Distance to Closest Person 41.7% Easy
- 560
- Subarray Sum Equals K 43.0% Medium
- 288
- Unique Word Abbreviation
- 20.7% Medium
- 382
- Linked List Random Node 50.1% Medium
- 28
- Implement strStr() 33.1% Easy
- 853
- Car Fleet 41.2% Medium
- 852
- Peak Index in a Mountain Array 70.2% Easy
- 375
- Guess Number Higher or Lower II 38.8% Medium
- 692
- Top K Frequent Words 47.5% Medium
- 340
- Longest Substring with At Most K Distinct Characters
- 41.3% Hard
- 126
- Word Ladder II 19.2% Hard
- 286
- Walls and Gates
- 50.9% Medium
- 163
- Missing Ranges
- 23.6% Medium
- 283
- Move Zeroes 55.4% Easy
- 173
- Binary Search Tree Iterator 51.1% Medium
- 444
- Sequence Reconstruction
- 20.8% Medium
- 346
- Moving Average from Data Stream
- 67.8% Easy
- 152
- Maximum Product Subarray 30.2% Medium
- 44
- Wildcard Matching 23.5% Hard
- 210
- Course Schedule II 36.7% Medium
- 121
- Best Time to Buy and Sell Stock 48.5% Easy
- 122
- Best Time to Buy and Sell Stock II 53.4% Easy
- 200
- Number of Islands 43.3% Medium
- 137
- Single Number II 47.4% Medium
- 148
- Sort List 37.7% Medium
- 300
- Longest Increasing Subsequence 41.5% Medium
- 101
- Symmetric Tree 44.7% Easy
- 498
- Diagonal Traverse 46.1% Medium
- 141
- Linked List Cycle 38.5% Easy
- 295
- Find Median from Data Stream 39.2% Hard
- 128
- Longest Consecutive Sequence 43.0% Hard
- 99
- Recover Binary Search Tree 36.0% Hard
- 273
- Integer to English Words 25.1% Hard
- 540
- Single Element in a Sorted Array 57.5% Medium
- 15
- 3Sum 25.0% Medium
- 10
- Regular Expression Matching 25.8% Hard
- 168
- Excel Sheet Column Title 29.7% Easy
- 310
- Minimum Height Trees 30.9% Medium
- 279
- Perfect Squares 43.3% Medium
- 22
- Generate Parentheses 57.6% Medium
- 222
- Count Complete Tree Nodes 37.8% Medium
- 329
- Longest Increasing Path in a Matrix 41.3% Hard
- 218
- The Skyline Problem 32.6% Hard
- 34
- Find First and Last Position of Element in Sorted Array 34.4% Medium
- 171
- Excel Sheet Column Number 52.5% Easy
- 246
- Strobogrammatic Number
- 43.3% Easy
- 248
- Strobogrammatic Number III
- 37.7% Hard
- 109
- Convert Sorted List to Binary Search Tree 43.0% Medium
- 776
- Split BST
- 53.3% Medium
- 298
- Binary Tree Longest Consecutive Sequence
- 45.1% Medium
- 572
- Subtree of Another Tree 42.6% Easy
- 85
- Maximal Rectangle 34.9% Hard
- 100
- Same Tree 51.0% Easy
- 221
- Maximal Square 34.4% Medium
- 78
- Subsets 55.7% Medium
- 35
- Search Insert Position 41.2% Easy
- 77
- Combinations 50.3% Medium
- 110
- Balanced Binary Tree 41.9% Easy
- 802
- Find Eventual Safe States 45.6% Medium
- 202
- Happy Number 47.0% Easy
- 213
- House Robber II 35.7% Medium
- 406
- Queue Reconstruction by Height 61.4% Medium
- 792
- Number of Matching Subsequences 45.2% Medium
- 489
- Robot Room Cleaner
- 66.6% Hard
- 277
- Find the Celebrity
- 38.6% Medium
- 18
- 4Sum 31.7% Medium
- 247
- Strobogrammatic Number II
- 45.7% Medium
- 708
- Insert into a Cyclic Sorted List
- 30.8% Medium
- 30
- Substring with Concatenation of All Words 24.3% Hard
- 727
- Minimum Window Subsequence
- 38.9% Hard
- 528
- Random Pick with Weight 43.1% Medium
- 39
- Combination Sum 51.3% Medium
- 188
- Best Time to Buy and Sell Stock IV 27.0% Hard
- 94
- Binary Tree Inorder Traversal 59.0% Medium
- 239
- Sliding Window Maximum 39.7% Hard
- 104
- Maximum Depth of Binary Tree 62.5% Easy
- 55
- Jump Game 32.7% Medium
- 363
- Max Sum of Rectangle No Larger Than K 35.7% Hard
- 416
- Partition Equal Subset Sum 41.9% Medium
- 157
- Read N Characters Given Read4
- 31.1% Easy
- 417
- Pacific Atlantic Water Flow 38.4% Medium
- 714
- Best Time to Buy and Sell Stock with Transaction Fee 52.0% Medium
- 410
- Split Array Largest Sum 43.1% Hard
- 552
- Student Attendance Record II 34.4% Hard
- 344
- Reverse String 64.3% Easy
- 97
- Interleaving String 29.2% Hard
- 231
- Power of Two 42.4% Easy
- 309
- Best Time to Buy and Sell Stock with Cooldown 45.0% Medium
- 354
- Russian Doll Envelopes 34.5% Hard
- 16
- 3Sum Closest 45.7% Medium
- 379
- Design Phone Directory
- 43.8% Medium
- 451
- Sort Characters By Frequency 57.6% Medium
- 185
- Department Top Three Salaries 28.8% Hard
- 212
- Word Search II 30.5% Hard
- 316
- Remove Duplicate Letters 33.6% Hard
- 326
- Power of Three 41.9% Easy
- 551
- Student Attendance Record I 45.9% Easy
- 581
- Shortest Unsorted Continuous Subarray 30.5% Easy
- 702
- Search in a Sorted Array of Unknown Size
- 62.2% Medium
- 788
- Rotated Digits 55.6% Easy
- 809
- Expressive Words 45.1% Medium
- 837
- New 21 Game 32.6% Medium
- 839
- Similar String Groups 36.0% Hard
- 841
- Keys and Rooms 61.5% Medium
- 855
- Exam Room 39.8% Medium
- 889
- Construct Binary Tree from Preorder and Postorder Traversal 62.1% Medium
- 836
- Rectangle Overlap 47.5% Easy
- 113
- Path Sum II 42.6% Medium
- 904
- Fruit Into Baskets 41.8% Medium
- 913
- Cat and Mouse 29.8% Hard
- 713
- Subarray Product Less Than K 37.7% Medium
- 929
- Unique Email Addresses 68.5% Easy
- 939
- Minimum Area Rectangle 51.5% Medium
- 771
- Jewels and Stones 83.8% Easy
- 947
- Most Stones Removed with Same Row or Column 54.8% Medium
- 951
- Flip Equivalent Binary Trees 65.0% Medium
- 430
- Flatten a Multilevel Doubly Linked List 44.6% Medium
- 801
- Minimum Swaps To Make Sequences Increasing 36.0% Medium
- 963
- Minimum Area Rectangle II 47.0% Medium
- 743
- Network Delay Time 44.3% Medium
- 943
- Find the Shortest Superstring 40.1% Hard
- 975
- Odd Even Jump 45.3% Hard
- 973
- K Closest Points to Origin 61.2% Medium
- 622
- Design Circular Queue 41.3% Medium
- 977
- Squares of a Sorted Array 71.8% Easy
- 950
- Reveal Cards In Increasing Order 72.5% Medium
- 895
- Maximum Frequency Stack 58.0% Hard
- 965
- Univalued Binary Tree 66.7% Easy
- 981
- Time Based Key-Value Store 51.8% Medium
- 986
- Interval List Intersections 64.2% Medium
- 1007
- Minimum Domino Rotations For Equal Row 51.2% Medium
- 1055
- Shortest Way to Form String
- 57.4% Medium
- 1057
- Campus Bikes
- 58.3% Medium
- 1011
- Capacity To Ship Packages Within D Days 55.2% Medium
- 1066
- Campus Bikes II
- 52.4% Medium
- 1056
- Confusing Number
- 50.7% Easy
- 1087
- Brace Expansion
- 60.2% Medium
- 1027
- Longest Arithmetic Sequence 51.3% Medium
- 1032
- Stream of Characters 44.9% Hard
- 958
- Check Completeness of a Binary Tree 49.7% Medium
- 1165
- Single-Row Keyboard
- 84.5% Easy
- 1153
- String Transforms Into Another String
- 33.3% Hard
- 1047
- Remove All Adjacent Duplicates In String 64.9% Easy
- 1197
- Minimum Knight Moves
- 29.7% Medium
- 1168
- Optimize Water Distribution in a Village
- 54.6% Hard
- 987
- Vertical Order Traversal of a Binary Tree 32.9% Medium
- 1036
- Escape a Large Maze 34.9% Hard
- 1074
- Number of Submatrices That Sum to Target 58.6% Hard
- 1048
- Longest String Chain 51.0% Medium
- 1088
- Confusing Number II
- 35.7% Hard
- 1096
- Brace Expansion II 58.8% Hard
- 934
- Shortest Bridge 45.0% Medium
- 1091
- Shortest Path in Binary Matrix 36.4% Medium
- 1110
- Delete Nodes And Return Forest 64.0% Medium
- 1108
- Defanging an IP Address 84.1% Easy
- 1145
- Binary Tree Coloring Game 48.9% Medium
- 1146
- Snapshot Array 33.3% Medium
- 1170
- Compare Strings by Frequency of the Smallest Character 59.3% Easy
- 1155
- Number of Dice Rolls With Target Sum 48.9% Medium
- 706
- Design HashMap 57.5% Easy
- 1143
- Longest Common Subsequence 57.5% Medium
- 1219
- Path with Maximum Gold 60.5% Medium
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