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:bald_woman: LeetCode solutions :bald_man:
中文
Problems
| # | Title | Languages |
|---|---|---|
| 1 | Two Sum | ![]() |
| 2 | Add Two Numbers | |
| 3 | Longest Substring Without Repeating Characters | |
| 4 | Median of Two Sorted Arrays | |
| 5 | Longest Palindromic Substring | |
| 6 | ZigZag Conversion | |
| 7 | Reverse Integer | ![]() |
| 8 | String to Integer (atoi) | |
| 9 | Palindrome Number | ![]() |
| 11 | Container With Most Water | ![]() |
| 12 | Integer to Roman | |
| 13 | Roman to Integer | |
| 14 | Longest Common Prefix | |
| 15 | 3Sum | |
| 16 | 3Sum Closest | |
| 17 | Letter Combinations of a Phone Number | |
| 18 | 4Sum | |
| 19 | Remove Nth Node From End of List | |
| 20 | Valid Parentheses | |
| 21 | Merge Two Sorted Lists | |
| 22 | Generate Parentheses | |
| 24 | Swap Nodes in Pairs | |
| 26 | Remove Duplicates from Sorted Array | |
| 27 | Remove Element | |
| 28 | Implement strStr() | |
| 31 | Next Permutation | |
| 33 | Search in Rotated Sorted Array | |
| 34 | Find First and Last Position of Element in Sorted Array | |
| 35 | Search Insert Position | |
| 36 | Valid Sudoku | |
| 38 | Count and Say | |
| 39 | Combination Sum | |
| 41 | First Missing Positive | |
| 42 | Trapping Rain Water | |
| 45 | Jump Game II | |
| 46 | Permutations | |
| 47 | Permutations II | |
| 48 | Rotate Image | |
| 49 | Group Anagrams | |
| 50 | Pow(x, n) | |
| 51 | N-Queens | |
| 52 | N-Queens II | |
| 53 | Maximum Subarray | |
| 54 | Spiral Matrix | |
| 55 | Jump Game | |
| 56 | Merge Intervals | |
| 57 | Insert Interval | |
| 58 | Length of Last Word | |
| 59 | Spiral Matrix II | |
| 60 | Permutation Sequence | |
| 61 | Rotate List | |
| 62 | Unique Paths | |
| 63 | Unique Paths II | |
| 64 | Minimum Path Sum | |
| 66 | Plus One | |
| 67 | Add Binary | |
| 69 | Sqrt(x) | |
| 70 | Climbing Stairs | |
| 71 | Simplify Path | |
| 73 | Set Matrix Zeroes | |
| 74 | Search a 2D Matrix | |
| 75 | Sort Colors | |
| 77 | Combinations | |
| 78 | Subsets | |
| 80 | Remove Duplicates from Sorted Array II | |
| 81 | Search in Rotated Sorted Array II | |
| 82 | Remove Duplicates from Sorted List II | |
| 83 | Remove Duplicates from Sorted List | |
| 84 | Largest Rectangle in Histogram | |
| 85 | Maximal Rectangle | |
| 86 | Partition List | |
| 88 | Merge Sorted Array | |
| 89 | Gray Code | |
| 90 | Subsets II | |
| 91 | Decode Ways | |
| 92 | Reverse Linked List II | |
| 93 | Restore IP Addresses | |
| 94 | Binary Tree Inorder Traversal | |
| 95 | Unique Binary Search Trees II | |
| 96 | Unique Binary Search Trees | |
| 98 | Validate Binary Search Tree | |
| 100 | Same Tree | |
| 101 | Symmetric Tree | |
| 102 | Binary Tree Level Order Traversal | |
| 103 | Binary Tree Zigzag Level Order Traversal | |
| 104 | Maximum Depth of Binary Tree | |
| 105 | Construct Binary Tree from Preorder and Inorder Traversal | |
| 106 | Construct Binary Tree from Inorder and Postorder Traversal | |
| 107 | Binary Tree Level Order Traversal II | |
| 108 | Convert Sorted Array to Binary Search Tree | |
| 109 | Convert Sorted List to Binary Search Tree | |
| 110 | Balanced Binary Tree | |
| 111 | Minimum Depth of Binary Tree | |
| 112 | Path Sum | |
| 113 | Path Sum II | |
| 114 | Flatten Binary Tree to Linked List | |
| 116 | Populating Next Right Pointers in Each Node | |
| 117 | Populating Next Right Pointers in Each Node II | |
| 118 | Pascal's Triangle | |
| 119 | Pascal's Triangle II | |
| 120 | Triangle | |
| 121 | Best Time to Buy and Sell Stock | |
| 122 | Best Time to Buy and Sell Stock II | |
| 125 | Valid Palindrome | |
| 129 | Sum Root to Leaf Numbers | |
| 131 | Palindrome Partitioning | |
| 133 | Clone Graph | |
| 134 | Gas Station | |
| 136 | Single Number | |
| 137 | Single Number II | |
| 138 | Copy List with Random Pointer | |
| 139 | Word Break | |
| 141 | Linked List Cycle | |
| 142 | Linked List Cycle II | |
| 144 | Binary Tree Preorder Traversal | |
| 145 | Binary Tree Postorder Traversal | |
| 146 | LRU Cache | |
| 147 | Insertion Sort List | |
| 149 | Max Points on a Line | |
| 150 | Evaluate Reverse Polish Notation | |
| 151 | Reverse Words in a String | |
| 152 | Maximum Product Subarray | |
| 153 | Find Minimum in Rotated Sorted Array | |
| 155 | Min Stack | |
| 160 | Intersection of Two Linked Lists | |
| 162 | Find Peak Element | |
| 164 | Maximum Gap | |
| 165 | Compare Version Numbers | |
| 166 | Fraction to Recurring Decimal | |
| 167 | Two Sum II - Input array is sorted | |
| 168 | Excel Sheet Column Title | |
| 169 | Majority Element | |
| 171 | Excel Sheet Column Number | |
| 172 | Factorial Trailing Zeroes | |
| 173 | Binary Search Tree Iterator | |
| 179 | Largest Number | |
| 187 | Repeated DNA Sequences | |
| 189 | Rotate Array | |
| 190 | Reverse Bits | |
| 191 | Number of 1 Bits | |
| 198 | House Robber | |
| 199 | Binary Tree Right Side View | |
| 200 | Number of Islands | |
| 201 | Bitwise AND of Numbers Range | |
| 202 | Happy Number | |
| 203 | Remove Linked List Elements | |
| 204 | Count Primes | |
| 205 | Isomorphic Strings | |
| 206 | Reverse Linked List | |
| 207 | Course Schedule | |
| 208 | Implement Trie (Prefix Tree) | |
| 209 | Minimum Size Subarray Sum | |
| 210 | Course Schedule II | |
| 211 | Design Add and Search Words Data Structure | |
| 213 | House Robber II | |
| 215 | Kth Largest Element in an Array | |
| 216 | Combination Sum III | |
| 217 | Contains Duplicate | |
| 219 | Contains Duplicate II | |
| 220 | Contains Duplicate III | |
| 221 | Maximal Square | |
| 222 | Count Complete Tree Nodes | |
| 223 | Rectangle Area | |
| 225 | Implement Stack using Queues | |
| 226 | Invert Binary Tree | |
| 227 | Basic Calculator II | |
| 228 | Summary Ranges | |
| 229 | Majority Element II | |
| 230 | Kth Smallest Element in a BST | |
| 231 | Power of Two | |
| 232 | Implement Queue using Stacks | |
| 233 | Number of Digit One | |
| 234 | Palindrome Linked List | |
| 235 | Lowest Common Ancestor of a Binary Search Tree | |
| 236 | Lowest Common Ancestor of a Binary Tree | |
| 237 | Delete Node in a Linked List | |
| 238 | Product of Array Except Self | |
| 239 | Sliding Window Maximum | |
| 240 | Search a 2D Matrix II | |
| 242 | Valid Anagram | |
| 257 | Binary Tree Paths | |
| 258 | Add Digits | |
| 260 | Single Number III | |
| 263 | Ugly Number | |
| 264 | Ugly Number II | |
| 268 | Missing Number | |
| 273 | Integer to English Words | |
| 274 | H-Index | |
| 275 | H-Index II | |
| 278 | First Bad Version | |
| 279 | Perfect Squares | |
| 283 | Move Zeroes | |
| 284 | Peeking Iterator | |
| 287 | Find the Duplicate Number | |
| 289 | Game of Life | |
| 290 | Word Pattern | |
| 292 | Nim Game | |
| 295 | Find Median from Data Stream | |
| 297 | Serialize and Deserialize Binary Tree | |
| 299 | Bulls and Cows | |
| 300 | Longest Increasing Subsequence | |
| 303 | Range Sum Query - Immutable | |
| 304 | Range Sum Query 2D - Immutable | |
| 306 | Additive Number | |
| 313 | Super Ugly Number | |
| 315 | Count of Smaller Numbers After Self | |
| 316 | Remove Duplicate Letters | |
| 318 | Maximum Product of Word Lengths | |
| 319 | Bulb Switcher | |
| 322 | Coin Change | |
| 326 | Power of Three | |
| 328 | Odd Even Linked List | |
| 329 | Longest Increasing Path in a Matrix | |
| 331 | Verify Preorder Serialization of a Binary Tree | |
| 334 | Increasing Triplet Subsequence | |
| 337 | House Robber III | |
| 338 | Counting Bits | |
| 341 | Flatten Nested List Iterator | |
| 342 | Power of Four | |
| 343 | Integer Break | |
| 344 | Reverse String | |
| 345 | Reverse Vowels of a String | |
| 347 | Top K Frequent Elements | |
| 349 | Intersection of Two Arrays | |
| 350 | Intersection of Two Arrays II | |
| 352 | Data Stream as Disjoint Intervals | |
| 357 | Count Numbers with Unique Digits | |
| 365 | Water and Jug Problem | |
| 367 | Valid Perfect Square | |
| 368 | Largest Divisible Subset | |
| 371 | Sum of Two Integers | |
| 372 | Super Pow | |
| 373 | Find K Pairs with Smallest Sums | |
| 374 | Guess Number Higher or Lower | |
| 380 | Insert Delete GetRandom O(1) | |
| 382 | Linked List Random Node | |
| 383 | Ransom Note | |
| 384 | Shuffle an Array | |
| 386 | Lexicographical Numbers | |
| 387 | First Unique Character in a String | |
| 389 | Find the Difference | |
| 390 | Elimination Game | |
| 391 | Perfect Rectangle | |
| 392 | Is Subsequence | |
| 393 | UTF-8 Validation | |
| 395 | Longest Substring with At Least K Repeating Characters | |
| 396 | Rotate Function | |
| 397 | Integer Replacement | |
| 398 | Random Pick Index | |
| 400 | Nth Digit | |
| 401 | Binary Watch | |
| 402 | Remove K Digits | |
| 403 | Frog Jump | |
| 404 | Sum of Left Leaves | |
| 405 | Convert a Number to Hexadecimal | |
| 406 | Queue Reconstruction by Height | |
| 409 | Longest Palindrome | |
| 410 | Split Array Largest Sum | |
| 412 | Fizz Buzz | |
| 413 | Arithmetic Slices | |
| 414 | Third Maximum Number | |
| 415 | Add Strings | |
| 416 | Partition Equal Subset Sum | |
| 417 | Pacific Atlantic Water Flow | |
| 419 | Battleships in a Board | |
| 421 | Maximum XOR of Two Numbers in an Array | |
| 423 | Reconstruct Original Digits from English | |
| 424 | Longest Repeating Character Replacement | |
| 427 | Construct Quad Tree | |
| 429 | N-ary Tree Level Order Traversal | |
| 430 | Flatten a Multilevel Doubly Linked List | |
| 432 | All O`one Data Structure | |
| 433 | Minimum Genetic Mutation | |
| 434 | Number of Segments in a String | |
| 435 | Non-overlapping Intervals | |
| 436 | Find Right Interval | |
| 437 | Path Sum III | |
| 438 | Find All Anagrams in a String | |
| 441 | Arranging Coins | |
| 442 | Find All Duplicates in an Array | |
| 443 | String Compression | |
| 445 | Add Two Numbers II | |
| 446 | Arithmetic Slices II - Subsequence | |
| 447 | Number of Boomerangs | |
| 448 | Find All Numbers Disappeared in an Array | |
| 449 | Serialize and Deserialize BST | |
| 450 | Delete Node in a BST | |
| 451 | Sort Characters By Frequency | |
| 452 | Minimum Number of Arrows to Burst Balloons | |
| 453 | Minimum Moves to Equal Array Elements | |
| 454 | 4Sum II | |
| 455 | Assign Cookies | |
| 456 | 132 Pattern | |
| 459 | Repeated Substring Pattern | |
| 461 | Hamming Distance | |
| 462 | Minimum Moves to Equal Array Elements II | |
| 463 | Island Perimeter | |
| 467 | Unique Substrings in Wraparound String | |
| 468 | Validate IP Address | |
| 470 | Implement Rand10() Using Rand7() | |
| 474 | Ones and Zeroes | |
| 475 | Heaters | |
| 476 | Number Complement | |
| 477 | Total Hamming Distance | |
| 478 | Generate Random Point in a Circle | |
| 480 | Sliding Window Median | |
| 481 | Magical String | |
| 482 | License Key Formatting | |
| 483 | Smallest Good Base | |
| 485 | Max Consecutive Ones | |
| 492 | Construct the Rectangle | |
| 493 | Reverse Pairs | |
| 494 | Target Sum | |
| 495 | Teemo Attacking | |
| 496 | Next Greater Element I | |
| 497 | Random Point in Non-overlapping Rectangles | |
| 498 | Diagonal Traverse | |
| 500 | Keyboard Row | |
| 501 | Find Mode in Binary Search Tree | |
| 502 | IPO | |
| 503 | Next Greater Element II | |
| 504 | Base 7 | |
| 506 | Relative Ranks | |
| 507 | Perfect Number | |
| 508 | Most Frequent Subtree Sum | |
| 509 | Fibonacci Number | |
| 513 | Find Bottom Left Tree Value | |
| 514 | Freedom Trail | |
| 515 | Find Largest Value in Each Tree Row | |
| 518 | Coin Change 2 | |
| 520 | Detect Capital | |
| 521 | Longest Uncommon Subsequence I | |
| 524 | Longest Word in Dictionary through Deleting | |
| 525 | Contiguous Array | |
| 526 | Beautiful Arrangement | |
| 528 | Random Pick with Weight | |
| 529 | Minesweeper | |
| 530 | Minimum Absolute Difference in BST | |
| 532 | K-diff Pairs in an Array | |
| 535 | Encode and Decode TinyURL | |
| 537 | Complex Number Multiplication | |
| 538 | Convert BST to Greater Tree | |
| 539 | Minimum Time Difference | |
| 540 | Single Element in a Sorted Array | |
| 541 | Reverse String II | |
| 542 | 01 Matrix | |
| 543 | Diameter of Binary Tree | |
| 547 | Number of Provinces | |
| 551 | Student Attendance Record I | |
| 552 | Student Attendance Record II | |
| 553 | Optimal Division | |
| 554 | Brick Wall | |
| 556 | Next Greater Element III | |
| 557 | Reverse Words in a String III | |
| 558 | Quad Tree Intersection | |
| 559 | Maximum Depth of N-ary Tree | |
| 560 | Subarray Sum Equals K | |
| 561 | Array Partition I | |
| 563 | Binary Tree Tilt | |
| 564 | Find the Closest Palindrome | |
| 565 | Array Nesting | |
| 566 | Reshape the Matrix | |
| 567 | Permutation in String | |
| 572 | Subtree of Another Tree | |
| 575 | Distribute Candies | |
| 576 | Out of Boundary Paths | |
| 581 | Shortest Unsorted Continuous Subarray | |
| 583 | Delete Operation for Two Strings | |
| 587 | Erect the Fence | |
| 589 | N-ary Tree Preorder Traversal | |
| 590 | N-ary Tree Postorder Traversal | |
| 592 | Fraction Addition and Subtraction | |
| 593 | Valid Square | |
| 594 | Longest Harmonious Subsequence | |
| 598 | Range Addition II | |
| 599 | Minimum Index Sum of Two Lists | |
| 605 | Can Place Flowers | |
| 606 | Construct String from Binary Tree | |
| 609 | Find Duplicate File in System | |
| 611 | Valid Triangle Number | |
| 617 | Merge Two Binary Trees | |
| 621 | Task Scheduler | |
| 622 | Design Circular Queue | |
| 623 | Add One Row to Tree | |
| 628 | Maximum Product of Three Numbers | |
| 629 | K Inverse Pairs Array | |
| 633 | Sum of Square Numbers | |
| 636 | Exclusive Time of Functions | |
| 637 | Average of Levels in Binary Tree | |
| 639 | Decode Ways II | |
| 640 | Solve the Equation | |
| 641 | Design Circular Deque | |
| 643 | Maximum Average Subarray I | |
| 645 | Set Mismatch | |
| 646 | Maximum Length of Pair Chain | |
| 647 | Palindromic Substrings | |
| 648 | Replace Words | |
| 652 | Find Duplicate Subtrees | |
| 653 | Two Sum IV - Input is a BST | |
| 654 | Maximum Binary Tree | |
| 655 | Print Binary Tree | |
| 657 | Robot Return to Origin | |
| 658 | Find K Closest Elements | |
| 661 | Image Smoother | |
| 662 | Maximum Width of Binary Tree | |
| 665 | Non-decreasing Array | |
| 669 | Trim a Binary Search Tree | |
| 670 | Maximum Swap | |
| 671 | Second Minimum Node In a Binary Tree | |
| 672 | Bulb Switcher II | |
| 673 | Number of Longest Increasing Subsequence | |
| 674 | Longest Continuous Increasing Subsequence | |
| 675 | Cut Off Trees for Golf Event | |
| 677 | Map Sum Pairs | |
| 680 | Valid Palindrome II | |
| 682 | Baseball Game | |
| 686 | Repeated String Match | |
| 687 | Longest Univalue Path | |
| 688 | Knight Probability in Chessboard | |
| 690 | Employee Importance | |
| 692 | Top K Frequent Words | |
| 693 | Binary Number with Alternating Bits | |
| 695 | Max Area of Island | |
| 696 | Count Binary Substrings | |
| 697 | Degree of an Array | |
| 699 | Falling Squares | |
| 700 | Search in a Binary Search Tree | |
| 701 | Insert into a Binary Search Tree | |
| 703 | Kth Largest Element in a Stream | |
| 704 | Binary Search | |
| 705 | Design HashSet | |
| 706 | Design HashMap | |
| 707 | Design Linked List | |
| 709 | To Lower Case | |
| 710 | Random Pick with Blacklist | |
| 713 | Subarray Product Less Than K | |
| 717 | 1-bit and 2-bit Characters | |
| 720 | Longest Word in Dictionary | |
| 722 | Remove Comments | |
| 724 | Find Pivot Index | |
| 725 | Split Linked List in Parts | |
| 728 | Self Dividing Numbers | |
| 729 | My Calendar I | |
| 731 | My Calendar II | |
| 733 | Flood Fill | |
| 735 | Asteroid Collision | |
| 738 | Monotone Increasing Digits | |
| 739 | Daily Temperatures | |
| 740 | Delete and Earn | |
| 743 | Network Delay Time | |
| 744 | Find Smallest Letter Greater Than Target | |
| 746 | Min Cost Climbing Stairs | |
| 747 | Largest Number At Least Twice of Others | |
| 748 | Shortest Completing Word | |
| 752 | Open the Lock | |
| 754 | Reach a Number | |
| 757 | Set Intersection Size At Least Two | |
| 762 | Prime Number of Set Bits in Binary Representation | |
| 763 | Partition Labels | |
| 764 | Largest Plus Sign | |
| 765 | Couples Holding Hands | |
| 766 | Toeplitz Matrix | |
| 767 | Reorganize String | |
| 768 | Max Chunks To Make Sorted II | |
| 769 | Max Chunks To Make Sorted | |
| 771 | Jewels and Stones | |
| 773 | Sliding Puzzle | |
| 775 | Global and Local Inversions | |
| 778 | Swim in Rising Water | |
| 779 | K-th Symbol in Grammar | |
| 781 | Rabbits in Forest | |
| 783 | Minimum Distance Between BST Nodes | |
| 784 | Letter Case Permutation | |
| 785 | Is Graph Bipartite? | |
| 788 | Rotated Digits | |
| 789 | Escape The Ghosts | |
| 790 | Domino and Tromino Tiling | |
| 791 | Custom Sort String | |
| 794 | Valid Tic-Tac-Toe State | |
| 796 | Rotate String | |
| 798 | Smallest Rotation with Highest Score | |
| 799 | Champagne Tower | |
| 804 | Unique Morse Code Words | |
| 805 | Split Array With Same Average | |
| 806 | Number of Lines To Write String | |
| 807 | Max Increase to Keep City Skyline | |
| 808 | Soup Servings | |
| 809 | Expressive Words | |
| 810 | Chalkboard XOR Game | |
| 811 | Subdomain Visit Count | |
| 812 | Largest Triangle Area | |
| 813 | Largest Sum of Averages | |
| 814 | Binary Tree Pruning | |
| 816 | Ambiguous Coordinates | |
| 817 | Linked List Components | |
| 819 | Most Common Word | |
| 820 | Short Encoding of Words | |
| 821 | Shortest Distance to a Character | |
| 822 | Card Flipping Game | |
| 824 | Goat Latin | |
| 825 | Friends Of Appropriate Ages | |
| 826 | Most Profit Assigning Work | |
| 829 | Consecutive Numbers Sum | |
| 830 | Positions of Large Groups | |
| 831 | Masking Personal Information | |
| 832 | Flipping an Image | |
| 836 | Rectangle Overlap | |
| 838 | Push Dominoes | |
| 839 | Similar String Groups | |
| 840 | Magic Squares In Grid | |
| 841 | Keys and Rooms | |
| 842 | Split Array into Fibonacci Sequence | |
| 844 | Backspace String Compare | |
| 846 | Hand of Straights | |
| 848 | Shifting Letters | |
| 849 | Maximize Distance to Closest Person | |
| 851 | Loud and Rich | |
| 852 | Peak Index in a Mountain Array | |
| 853 | Car Fleet | |
| 856 | Score of Parentheses | |
| 858 | Mirror Reflection | |
| 859 | Buddy Strings | |
| 860 | Lemonade Change | |
| 861 | Score After Flipping Matrix | |
| 865 | Smallest Subtree with all the Deepest Nodes | |
| 866 | Prime Palindrome | |
| 867 | Transpose Matrix | |
| 868 | Binary Gap | |
| 869 | Reordered Power of 2 | |
| 870 | Advantage Shuffle | |
| 871 | Minimum Number of Refueling Stops | |
| 872 | Leaf-Similar Trees | |
| 873 | Length of Longest Fibonacci Subsequence | |
| 874 | Walking Robot Simulation | |
| 875 | Koko Eating Bananas | |
| 876 | Middle of the Linked List | |
| 877 | Stone Game | |
| 878 | Nth Magical Number | |
| 879 | Profitable Schemes | |
| 880 | Decoded String at Index | |
| 881 | Boats to Save People | |
| 883 | Projection Area of 3D Shapes | |
| 884 | Uncommon Words from Two Sentences | |
| 885 | Spiral Matrix III | |
| 888 | Fair Candy Swap | |
| 889 | Construct Binary Tree from Preorder and Postorder Traversal | |
| 890 | Find and Replace Pattern | |
| 891 | Sum of Subsequence Widths | |
| 892 | Surface Area of 3D Shapes | |
| 893 | Groups of Special-Equivalent Strings | |
| 894 | All Possible Full Binary Trees | |
| 895 | Maximum Frequency Stack | |
| 896 | Monotonic Array | |
| 897 | Increasing Order Search Tree | |
| 899 | Orderly Queue | |
| 900 | RLE Iterator | |
| 901 | Online Stock Span | |
| 902 | Numbers At Most N Given Digit Set | |
| 904 | Fruit Into Baskets | |
| 905 | Sort Array By Parity | |
| 907 | Sum of Subarray Minimums | |
| 908 | Smallest Range I | |
| 909 | Snakes and Ladders | |
| 911 | Online Election | |
| 912 | Sort an Array | |
| 914 | X of a Kind in a Deck of Cards | |
| 915 | Partition Array into Disjoint Intervals | |
| 916 | Word Subsets | |
| 917 | Reverse Only Letters | |
| 918 | Maximum Sum Circular Subarray | |
| 919 | Complete Binary Tree Inserter | |
| 920 | Number of Music Playlists | |
| 921 | Minimum Add to Make Parentheses Valid | |
| 922 | Sort Array By Parity II | |
| 923 | 3Sum With Multiplicity | |
| 925 | Long Pressed Name | |
| 926 | Flip String to Monotone Increasing | |
| 927 | Three Equal Parts | |
| 929 | Unique Email Addresses | |
| 930 | Binary Subarrays With Sum | |
| 931 | Minimum Falling Path Sum | |
| 933 | Number of Recent Calls | |
| 935 | Knight Dialer | |
| 937 | Reorder Data in Log Files | |
| 938 | Range Sum of BST | |
| 939 | Minimum Area Rectangle | |
| 941 | Valid Mountain Array | |
| 942 | DI String Match | |
| 944 | Delete Columns to Make Sorted | |
| 945 | Minimum Increment to Make Array Unique | |
| 946 | Validate Stack Sequences | |
| 948 | Bag of Tokens | |
| 949 | Largest Time for Given Digits | |
| 950 | Reveal Cards In Increasing Order | |
| 951 | Flip Equivalent Binary Trees | |
| 953 | Verifying an Alien Dictionary | |
| 954 | Array of Doubled Pairs | |
| 956 | Tallest Billboard | |
| 957 | Prison Cells After N Days | |
| 958 | Check Completeness of a Binary Tree | |
| 961 | N-Repeated Element in Size 2N Array | |
| 962 | Maximum Width Ramp | |
| 965 | Univalued Binary Tree | |
| 967 | Numbers With Same Consecutive Differences | |
| 969 | Pancake Sorting | |
| 970 | Powerful Integers | |
| 973 | K Closest Points to Origin | |
| 974 | Subarray Sums Divisible by K | |
| 975 | Odd Even Jump | |
| 976 | Largest Perimeter Triangle | |
| 977 | Squares of a Sorted Array | |
| 978 | Longest Turbulent Subarray | |
| 979 | Distribute Coins in Binary Tree | |
| 981 | Time Based Key-Value Store | |
| 982 | Triples with Bitwise AND Equal To Zero | |
| 984 | String Without AAA or BBB | |
| 985 | Sum of Even Numbers After Queries | |
| 986 | Interval List Intersections | |
| 987 | Vertical Order Traversal of a Binary Tree | |
| 988 | Smallest String Starting From Leaf | |
| 989 | Add to Array-Form of Interger | |
| 990 | Satisfiability of Equality Equations | |
| 991 | Broken Calculator | |
| 993 | Cousins in Binary Tree | |
| 994 | Rotting Oranges | |
| 997 | Find the Town Judge | |
| 998 | Maximum Binary Tree II | |
| 999 | Available Captures for Rook | |
| 1001 | Grid Illumination | |
| 1002 | Find Common Characters | |
| 1003 | Check If Word Is Valid After Substitutions | |
| 1004 | Max Consecutive Ones III | |
| 1005 | Maximize Sum Of Array After K Negations | |
| 1006 | Clumsy Factorial | |
| 1007 | Minimum Domino Rotations For Equal Row | |
| 1008 | Construct Binary Search Tree from Preorder Traversal | |
| 1009 | Complement of Base 10 Integer | |
| 1010 | Pairs of Songs With Total Durations Divisible by 60 | |
| 1011 | Capacity To Ship Packages Within D Days | |
| 1012 | Numbers With Repeated Digits | |
| 1013 | Partition Array Into Three Parts With Equal Sum | |
| 1014 | Best Sightseeing Pair | |
| 1016 | Binary String With Substrings Representing 1 To N | |
| 1017 | Convert to Base -2 | |
| 1018 | Binary Prefix Divisible By 5 | |
| 1019 | Next Greater Node In Linked List | |
| 1020 | Number of Enclaves | |
| 1021 | Remove Outermost Parentheses | |
| 1022 | Sum of Root To Leaf Binary Numbers | |
| 1023 | Camelcase Matching | |
| 1024 | Video Stitching | |
| 1025 | Divisor Game | |
| 1026 | Maximum Difference Between Node and Ancestor | |
| 1027 | Longest Arithmetic Subsequence | |
| 1028 | Recover a Tree From Preorder Traversal | |
| 1029 | Two City Scheduling | |
| 1030 | Matrix Cells in Distance Order | |
| 1031 | Maximum Sum of Two Non-Overlapping Subarrays | |
| 1033 | Moving Stones Until Consecutive | |
| 1034 | Coloring A Border | |
| 1035 | Uncrossed Lines | |
| 1037 | Valid Boomerang | |
| 1038 | Binary Search Tree to Greater Sum Tree | |
| 1040 | Moving Stones Until Consecutive II | |
| 1041 | Robot Bounded In Circle | |
| 1042 | Flower Planting With No Adjacent | |
| 1043 | Partition Array for Maximum Sum | |
| 1046 | Last Stone Weight | |
| 1047 | Remove All Adjacent Duplicates In String | |
| 1048 | Longest String Chain | |
| 1051 | Height Checker | |
| 1052 | Grumpy Bookstore Owner | |
| 1053 | Previous Permutation With One Swap | |
| 1054 | Distant Barcodes | |
| 1061 | Lexicographically Smallest Equivalent String | |
| 1071 | Greatest Common Divisor of Strings | |
| 1073 | Adding Two Negabinary Numbers | |
| 1074 | Number of Submatrices That Sum to Target | |
| 1078 | Occurrences After Bigram | |
| 1079 | Letter Tile Possibilities | |
| 1080 | Insufficient Nodes in Root to Leaf Paths | |
| 1081 | Smallest Subsequence of Distinct Characters | |
| 1089 | Duplicate Zeros | |
| 1090 | Largest Values From Labels | |
| 1091 | Shortest Path in Binary Matrix | |
| 1093 | Statistics from a Large Sample | |
| 1094 | Car Pooling | |
| 1103 | Distribute Candies to People | |
| 1104 | Path In Zigzag Labelled Binary Tree | |
| 1106 | Parsing A Boolean Expression | |
| 1108 | Defanging an IP Address | |
| 1109 | Corporate Flight Bookings | |
| 1110 | Delete Nodes And Return Forest | |
| 1111 | Maximum Nesting Depth of Two Valid Parentheses Strings | |
| 1122 | Relative Sort Array | |
| 1123 | Lowest Common Ancestor of Deepest Leaves | |
| 1128 | Number of Equivalent Domino Pairs | |
| 1129 | Shortest Path with Alternating Colors | |
| 1131 | Maximum of Absolute Value Expression | |
| 1137 | N-th Tribonacci Number | |
| 1138 | Alphabet Board Path | |
| 1139 | Largest 1-Bordered Square | |
| 1143 | Longest Common Subsequence | |
| 1144 | Decrease Elements To Make Array Zigzag | |
| 1145 | Binary Tree Coloring Game | |
| 1146 | Snapshot Array | |
| 1154 | Day of the Year | |
| 1155 | Number of Dice Rolls With Target Sum | |
| 1156 | Swap For Longest Repeated Character Substring | |
| 1160 | Find Words That Can Be Formed by Characters | |
| 1161 | Maximum Level Sum of a Binary Tree | |
| 1162 | As Far from Land as Possible | |
| 1169 | invalid-transactions | |
| 1170 | Compare Strings by Frequency of the Smallest Character | |
| 1172 | Dinner Plate Stacks | |
| 1175 | Prime Arrangements | |
| 1177 | Can Make Palindrome from Substring | |
| 1178 | Number of Valid Words for Each Puzzle | |
| 1184 | Distance Between Bus Stops | |
| 1185 | Day of the Week | |
| 1189 | Maximum Number of Balloons | |
| 1190 | Reverse Substrings Between Each Pair of Parentheses | |
| 1191 | K-Concatenation Maximum Sum | |
| 1200 | Minimum Absolute Difference | |
| 1202 | Smallest String With Swaps | |
| 1207 | Unique Number of Occurrences | |
| 1208 | Get Equal Substrings Within Budget | |
| 1209 | Remove All Adjacent Duplicates in String II | |
| 1217 | Play with Chips | |
| 1218 | Longest Arithmetic Subsequence of Given Difference | |
| 1220 | Count Vowels Permutation | |
| 1221 | Split a String in Balanced Strings | |
| 1222 | Queens That Can Attack the King | |
| 1223 | Dice Roll Simulation | |
| 1224 | Maximum Equal Frequency | |
| 1227 | Airplane Seat Assignment Probability | |
| 1232 | Check If It Is a Straight Line | |
| 1233 | Remove Sub-Folders from the Filesystem | |
| 1234 | Replace the Substring for Balanced String | |
| 1235 | Maximum Profit in Job Scheduling | |
| 1237 | Find Positive Integer Solution for a Given Equation | |
| 1238 | Circular Permutation in Binary Representation | |
| 1247 | Minimum Swaps to Make Strings Equal | |
| 1248 | Count Number of Nice Subarrays | |
| 1249 | Minimum Remove to Make Valid Parentheses | |
| 1250 | Check If It Is a Good Array | |
| 1252 | Cells with Odd Values in a Matrix | |
| 1253 | Reconstruct a 2-Row Binary Matrix | |
| 1255 | Maximum Score Words Formed by Letters | |
| 1260 | Shift 2D Grid | |
| 1261 | Find Elements in a Contaminated Binary Tree | |
| 1262 | Greatest Sum Divisible by Three | |
| 1266 | Minimum Time Visiting All Points | |
| 1267 | Count Servers that Communicate | |
| 1268 | Search Suggestions System | |
| 1269 | Number of Ways to Stay in the Same Place After Some Steps | |
| 1275 | Find Winner on a Tic Tac Toe Game | |
| 1276 | Number of Burgers with No Waste of Ingredients | |
| 1277 | Count Square Submatrices with All Ones | |
| 1281 | Subtract the Product and Sum of Digits of an Integer | |
| 1282 | Group the People Given the Group Size They Belong To | |
| 1283 | Find the Smallest Divisor Given a Threshold | |
| 1284 | Minimum Number of Flips to Convert Binary Matrix to Zero Matrix | |
| 1286 | Iterator for Combination | |
| 1287 | Element Appearing More Than 25% In Sorted Array | |
| 1288 | Remove Covered Intervals | |
| 1289 | Minimum Falling Path Sum II | |
| 1290 | Convert Binary Number in a Linked List to Integer | |
| 1291 | Sequential Digits | |
| 1292 | Maximum Side Length of a Square with Sum Less than or Equal to Threshold | |
| 1295 | Find Numbers with Even Number of Digits | |
| 1296 | Divide Array in Sets of K Consecutive Numbers | |
| 1297 | Maximum Number of Occurrences of a Substring | |
| 1298 | Maximum Candies You Can Get from Boxes | |
| 1299 | Replace Elements with Greatest Element on Right Side | |
| 1300 | Sum of Mutated Array Closest to Target | |
| 1302 | Deepest Leaves Sum | |
| 1304 | Find N Unique Integers Sum up to Zero | |
| 1305 | All Elements in Two Binary Search Trees | |
| 1306 | Jump Game III | |
| 1309 | Decrypt String from Alphabet to Integer Mapping | |
| 1310 | XOR Queries of a Subarray | |
| 1311 | Get Watched Videos by Your Friends | |
| 1313 | Decompress Run-Length Encoded List | |
| 1314 | Matrix Block Sum | |
| 1315 | Sum of Nodes with Even-Valued Grandparent | |
| 1316 | Distinct Echo Substrings | |
| 1317 | Convert Integer to the Sum of Two No-Zero Integers | |
| 1318 | Minimum Flips to Make a OR b Equal to c | |
| 1320 | Minimum Distance to Type a Word Using Two Fingers | |
| 1323 | Maximum 69 Number | |
| 1324 | Print Words Vertically | |
| 1325 | Delete Leaves With a Given Value | |
| 1328 | Break a Palindrome | |
| 1329 | Sort the Matrix Diagonally | |
| 1330 | Reverse Subarray To Maximize Array Value | |
| 1331 | Rank Transform of an Array | |
| 1332 | Remove Palindromic Subsequences | |
| 1333 | Filter Restaurants by Vegan-Friendly, Price and Distance | |
| 1335 | Minimum Difficulty of a Job Schedule | |
| 1337 | The K Weakest Rows in a Matrix | |
| 1338 | Reduce Array Size to The Half | |
| 1339 | Maximum Product of Splitted Binary Tree | |
| 1342 | Number of Steps to Reduce a Number to Zero | |
| 1343 | Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold | |
| 1344 | Angle Between Hands of a Clock | |
| 1346 | Check If N and Its Double Exist | |
| 1347 | Minimum Number of Steps to Make Two Strings Anagram | |
| 1351 | Count Negative Numbers in a Sorted Matrix | |
| 1352 | Product of the Last K Numbers | |
| 1353 | Maximum Number of Events That Can Be Attended | |
| 1356 | Sort Integers by The Number of 1 Bits | |
| 1357 | Apply Discount Every n Orders | |
| 1358 | Number of Substrings Containing All Three Characters | |
| 1359 | Count All Valid Pickup and Delivery Options | |
| 1360 | Number of Days Between Two Dates | |
| 1362 | Closest Divisors | |
| 1363 | Largest Multiple of Three | |
| 1365 | How Many Numbers Are Smaller Than the Current Number | ![]() |
| 1366 | Rank Teams by Votes | |
| 1367 | Linked List in Binary Tree | |
| 1368 | Minimum Cost to Make at Least One Valid Path in a Grid | |
| 1370 | Increasing Decreasing String | |
| 1371 | Find the Longest Substring Containing Vowels in Even Counts | |
| 1372 | Longest ZigZag Path in a Binary Tree | |
| 1373 | Maximum Sum BST in Binary Tree | |
| 1374 | Generate a String With Characters That Have Odd Counts | |
| 1375 | Bulb Switcher III | |
| 1376 | Time Needed to Inform All Employees | |
| 1377 | Frog Position After T Seconds | |
| 1379 | Find a Corresponding Node of a Binary Tree in a Clone of That Tree | |
| 1380 | Lucky Numbers in a Matrix | |
| 1381 | Design a Stack With Increment Operation | |
| 1382 | Balance a Binary Search Tree | |
| 1383 | Maximum Performance of a Team | |
| 1385 | Find the Distance Value Between Two Arrays | |
| 1386 | Cinema Seat Allocation | |
| 1387 | Sort Integers by The Power Value | |
| 1389 | Create Target Array in the Given Order | |
| 1390 | Four Divisors | |
| 1391 | Check if There is a Valid Path in a Grid | |
| 1394 | Find Lucky Integer in an Array | |
| 1395 | Count Number of Teams | |
| 1396 | Design Underground System | |
| 1399 | Count Largest Group | |
| 1400 | Construct K Palindrome Strings | |
| 1401 | Circle and Rectangle Overlapping | |
| 1402 | Reducing Dishes | |
| 1403 | Minimum Subsequence in Non-Increasing Order | |
| 1404 | Number of Steps to Reduce a Number in Binary Representation to One | |
| 1405 | Longest Happy String | |
| 1408 | String Matching in an Array | |
| 1409 | Queries on a Permutation With Key | |
| 1410 | HTML Entity Parser | |
| 1411 | Number of Ways to Paint N × 3 Grid | |
| 1413 | Minimum Value to Get Positive Step by Step Sum | |
| 1414 | Find the Minimum Number of Fibonacci Numbers Whose Sum Is K | |
| 1415 | The k-th Lexicographical String of All Happy Strings of Length n | |
| 1416 | Restore The Array | |
| 1417 | Reformat The String | |
| 1419 | Minimum Number of Frogs Croaking | |
| 1420 | Build Array Where You Can Find The Maximum Exactly K Comparisons | |
| 1422 | Maximum Score After Splitting a String | |
| 1423 | Maximum Points You Can Obtain from Cards | |
| 1424 | Diagonal Traverse II | |
| 1425 | Constrained Subsequence Sum | |
| 1431 | Kids With the Greatest Number of Candies | |
| 1432 | Max Difference You Can Get From Changing an Integer | |
| 1433 | Check If a String Can Break Another String | |
| 1436 | Destination City | |
| 1437 | Check If All 1's Are at Least Length K Places Away | |
| 1438 | Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | |
| 1441 | Build an Array With Stack Operations | |
| 1443 | Minimum Time to Collect All Apples in a Tree | |
| 1446 | Consecutive Characters | |
| 1447 | Simplified Fractions | |
| 1448 | Count Good Nodes in Binary Tree | |
| 1449 | Form Largest Integer With Digits That Add up to Target | |
| 1450 | Number of Students Doing Homework at a Given Time | |
| 1451 | Rearrange Words in a Sentence | |
| 1452 | People Whose List of Favorite Companies Is Not a Subset of Another List | |
| 1455 | Check If a Word Occurs As a Prefix of Any Word in a Sentence | |
| 1456 | Maximum Number of Vowels in a Substring of Given Length | |
| 1457 | Pseudo-Palindromic Paths in a Binary Tree | |
| 1460 | Make Two Arrays Equal by Reversing Sub-arrays | |
| 1461 | Check If a String Contains All Binary Codes of Size K | |
| 1463 | Cherry Pickup II | |
| 1464 | Maximum Product of Two Elements in an Array | |
| 1465 | Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts | |
| 1470 | Shuffle the Array | |
| 1471 | The k Strongest Values in an Array | |
| 1472 | Design Browser History | |
| 1473 | Paint House III | |
| 1475 | Final Prices With a Special Discount in a Shop | |
| 1476 | Subrectangle Queries | |
| 1480 | Running Sum of 1d Array | |
| 1481 | Least Number of Unique Integers after K Removals | |
| 1486 | XOR Operation in an Array | |
| 1487 | Making File Names Unique | |
| 1488 | Avoid Flood in The City | |
| 1491 | Average Salary Excluding the Minimum and Maximum Salary | |
| 1492 | The kth Factor of n | |
| 1493 | Longest Subarray of 1's After Deleting One Element | |
| 1496 | Path Crossing | |
| 1497 | Check If Array Pairs Are Divisible by k | |
| 1498 | Number of Subsequences That Satisfy the Given Sum Condition | |
| 1499 | Max Value of Equation | |
| 1502 | Can Make Arithmetic Progression From Sequence | |
| 1503 | Last Moment Before All Ants Fall Out of a Plank | |
| 1504 | Count Submatrices With All Ones | |
| 1507 | Reformat Date | |
| 1508 | Range Sum of Sorted Subarray Sums | |
| 1509 | Minimum Difference Between Largest and Smallest Value in Three Moves | |
| 1512 | Number of Good Pairs | |
| 1513 | Number of Substrings With Only 1s | |
| 1514 | Path with Maximum Probability | |
| 1518 | Water Bottles | |
| 1523 | Count Odd Numbers in an Interval Range | |
| 1524 | Number of Sub-arrays With Odd Sum | |
| 1525 | Number of Good Ways to Split a String | |
| 1528 | Shuffle String | |
| 1529 | Bulb Switcher IV | |
| 1530 | Number of Good Leaf Nodes Pairs | |
| 1534 | Count Good Triplets | |
| 1535 | Find the Winner of an Array Game | |
| 1539 | Kth Missing Positive Number | |
| 1540 | Can Convert String in K Moves | |
| 1542 | Find Longest Awesome Substring | |
| 1544 | Make The String Great | |
| 1545 | Find Kth Bit in Nth Binary String | |
| 1550 | Three Consecutive Odds | |
| 1551 | Minimum Operations to Make Array Equal | |
| 1556 | Thousand Separator | |
| 1557 | Minimum Number of Vertices to Reach All Nodes | |
| 1558 | Minimum Numbers of Function Calls to Make Target Array | |
| 1560 | Most Visited Sector in a Circular Track | |
| 1561 | Maximum Number of Coins You Can Get | |
| 1566 | Detect Pattern of Length M Repeated K or More Times | |
| 1567 | Maximum Length of Subarray With Positive Product | |
| 1572 | Matrix Diagonal Sum | |
| 1573 | Number of Ways to Split a String | |
| 1574 | Shortest Subarray to be Removed to Make Array Sorted | |
| 1576 | Replace All ?'s to Avoid Consecutive Repeating Characters | |
| 1577 | Number of Ways Where Square of Number Is Equal to Product of Two Numbers | |
| 1578 | Minimum Time to Make Rope Colorful | |
| 1582 | Special Positions in a Binary Matrix | |
| 1588 | Sum of All Odd Length Subarrays | |
| 1589 | Maximum Sum Obtained of Any Permutation | |
| 1590 | Make Sum Divisible by P | |
| 1592 | Rearrange Spaces Between Words | |
| 1594 | Maximum Non Negative Product in a Matrix | |
| 1598 | Crawler Log Folder | |
| 1599 | Maximum Profit of Operating a Centennial Wheel | |
| 1601 | Maximum Number of Achievable Transfer Requests | |
| 1603 | Design Parking System | |
| 1604 | Alert Using Same Key-Card Three or More Times in a One Hour Period | |
| 1608 | Special Array With X Elements Greater Than or Equal X | |
| 1609 | Even Odd Tree | |
| 1610 | Maximum Number of Visible Points | |
| 1614 | Maximum Nesting Depth of the Parentheses | |
| 1615 | Maximal Network Rank | |
| 1619 | Mean of Array After Removing Some Elements | |
| 1620 | Coordinate With Maximum Network Quality | |
| 1621 | Number of Sets of K Non-Overlapping Line Segments | |
| 1624 | Largest Substring Between Two Equal Characters | |
| 1629 | Slowest Key | |
| 1630 | Arithmetic Subarrays | |
| 1631 | Path With Minimum Effort | |
| 1636 | Sort Array by Increasing Frequency | |
| 1637 | Widest Vertical Area Between Two Points Containing No Points | |
| 1638 | Count Substrings That Differ by One Character | |
| 1640 | Check Array Formation Through Concatenation | |
| 1641 | Count Sorted Vowel Strings | |
| 1642 | Furthest Building You Can Reach | |
| 1643 | Kth Smallest Instructions | |
| 1646 | Get Maximum in Generated Array | |
| 1647 | Minimum Deletions to Make Character Frequencies Unique | |
| 1648 | Sell Diminishing-Valued Colored Balls | |
| 1649 | Create Sorted Array through Instructions | |
| 1652 | Defuse the Bomb | |
| 1653 | Minimum Deletions to Make String Balanced | |
| 1654 | Minimum Jumps to Reach Home | |
| 1656 | Design an Ordered Stream | |
| 1657 | Determine if Two Strings Are Close | |
| 1658 | Minimum Operations to Reduce X to Zero | |
| 1662 | Check If Two String Arrays are Equivalent | |
| 1663 | Smallest String With A Given Numeric Value | |
| 1664 | Ways to Make a Fair Array | |
| 1668 | Maximum Repeating Substring | |
| 1669 | Merge In Between Linked Lists | |
| 1670 | Design Front Middle Back Queue | |
| 1672 | Richest Customer Wealth | |
| 1673 | Find the Most Competitive Subsequence | |
| 1678 | Goal Parser Interpretation | |
| 1679 | Max Number of K-Sum Pairs | |
| 1684 | Count the Number of Consistent Strings | |
| 1685 | Sum of Absolute Differences in a Sorted Array | |
| 1688 | Count of Matches in Tournament | |
| 1689 | Partitioning Into Minimum Number Of Deci-Binary Numbers | |
| 1694 | Reformat Phone Number | |
| 1695 | Maximum Erasure Value | |
| 1696 | Jump Game VI | |
| 1700 | Number of Students Unable to Eat Lunch | |
| 1701 | Average Waiting Time | |
| 1702 | Maximum Binary String After Change | |
| 1704 | Determine if String Halves Are Alike | |
| 1705 | Maximum Number of Eaten Apples | |
| 1706 | Where Will the Ball Fall | |
| 1710 | Maximum Units on a Truck | |
| 1711 | Count Good Meals | |
| 1712 | Ways to Split Array Into Three Subarrays | |
| 1716 | Calculate Money in Leetcode Bank | |
| 1720 | Decode XORed Array | |
| 1721 | Swapping Nodes in a Linked List | |
| 1722 | Minimize Hamming Distance After Swap Operations | |
| 1725 | Number Of Rectangles That Can Form The Largest Square | |
| 1726 | Tuple with Same Product | |
| 1732 | Find the Highest Altitude | |
| 1733 | Minimum Number of People to Teach | |
| 1734 | Decode XORed Permutation | |
| 1736 | Latest Time by Replacing Hidden Digits | |
| 1737 | Change Minimum Characters to Satisfy One of Three Conditions | |
| 1738 | Find Kth Largest XOR Coordinate Value | |
| 1742 | Maximum Number of Balls in a Box | |
| 1743 | Restore the Array From Adjacent Pairs | |
| 1744 | Can You Eat Your Favorite Candy on Your Favorite Day? | |
| 1748 | Sum of Unique Elements | |
| 1749 | Maximum Absolute Sum of Any Subarray | |
| 1750 | Minimum Length of String After Deleting Similar Ends | |
| 1752 | Check if Array Is Sorted and Rotated | |
| 1753 | Maximum Score From Removing Stones | |
| 1754 | Largest Merge Of Two Strings | |
| 1758 | Minimum Changes To Make Alternating Binary String | |
| 1759 | Count Number of Homogenous Substrings | |
| 1763 | Longest Nice Substring | |
| 1764 | Form Array by Concatenating Subarrays of Another Array | |
| 1768 | Merge Strings Alternately | |
| 1769 | Minimum Number of Operations to Move All Balls to Each Box | |
| 1773 | Count Items Matching a Rule | |
| 1779 | Find Nearest Point That Has the Same X or Y Coordinate | |
| 1780 | Check if Number is a Sum of Powers of Three | |
| 1784 | Check if Binary String Has at Most One Segment of Ones | |
| 1785 | Minimum Elements to Add to Form a Given Sum | |
| 1790 | Check if One String Swap Can Make Strings Equal | |
| 1791 | Find Center of Star Graph | |
| 1792 | Maximum Average Pass Ratio | |
| 1796 | Second Largest Digit in a String | |
| 1797 | Design Authentication Manager | |
| 1798 | Maximum Number of Consecutive Values You Can Make | |
| 1800 | Maximum Ascending Subarray Sum | |
| 1801 | Number of Orders in the Backlog | |
| 1802 | Maximum Value at a Given Index in a Bounded Array | |
| 1805 | Number of Different Integers in a String | |
| 1807 | Evaluate the Bracket Pairs of a String | |
| 1812 | Determine Color of a Chessboard Square | |
| 1813 | Sentence Similarity III | |
| 1814 | Count Nice Pairs in an Array | |
| 1816 | Truncate Sentence | |
| 1817 | Finding the Users Active Minutes | |
| 1818 | Minimum Absolute Sum Difference | |
| 1822 | Sign of the Product of an Array | |
| 1823 | Find the Winner of the Circular Game | |
| 1824 | Minimum Sideway Jumps | |
| 1827 | Minimum Operations to Make the Array Increasing | |
| 1828 | Queries on Number of Points Inside a Circle | |
| 1829 | Maximum XOR for Each Query | |
| 1832 | Check if the Sentence Is Pangram | |
| 1833 | Maximum Ice Cream Bars | |
| 1834 | Single-Threaded CPU | |
| 1837 | Sum of Digits in Base K | |
| 1838 | Frequency of the Most Frequent Element | |
| 1839 | Longest Substring Of All Vowels in Order | |
| 1840 | Maximum Building Height | |
| 1844 | Replace All Digits with Characters | |
| 1845 | Seat Reservation Manager | |
| 1846 | Maximum Element After Decreasing and Rearranging | |
| 1847 | Closest Room | |
| 1848 | Minimum Distance to the Target Element | |
| 1854 | Maximum Population Year | |
| 1855 | Maximum Distance Between a Pair of Values | |
| 1859 | Sorting the Sentence | |
| 1860 | Incremental Memory Leak | |
| 1861 | Rotating the Box | |
| 1863 | Sum of All Subset XOR Totals | |
| 1865 | Finding Pairs With a Certain Sum | |
| 1866 | Number of Ways to Rearrange Sticks With K Sticks Visible | |
| 1869 | Longer Contiguous Segments of Ones than Zeros | |
| 1870 | Minimum Speed to Arrive on Time | |
| 1876 | Substrings of Size Three with Distinct Characters | |
| 1877 | Minimize Maximum Pair Sum in Array | |
| 1878 | Get Biggest Three Rhombus Sums in a Grid | |
| 1880 | Check if Word Equals Summation of Two Words | |
| 1884 | Egg Drop With 2 Eggs and N Floors | |
| 1886 | Determine Whether Matrix Can Be Obtained By Rotation | |
| 1887 | Reduction Operations to Make the Array Elements Equal | |
| 1888 | Minimum Number of Flips to Make the Binary String Alternating | |
| 1893 | Check if All the Integers in a Range Are Covered | |
| 1894 | Find the Student that Will Replace the Chalk | |
| 1897 | Redistribute Characters to Make All Strings Equal | |
| 1899 | Merge Triplets to Form Target Triplet | |
| 1901 | Find a Peak Element II | |
| 1903 | Largest Odd Number in String | |
| 1904 | The Number of Full Rounds You Have Played | |
| 1909 | Remove One Element to Make the Array Strictly Increasing | |
| 1913 | Maximum Product Difference Between Two Pairs | |
| 1920 | Build Array from Permutation | |
| 1921 | Eliminate Maximum Number of Monsters | |
| 1925 | Count Square Sum Triples | |
| 1926 | Nearest Exit from Entrance in Maze | |
| 1929 | Concatenation of Array | |
| 1930 | Unique Length-3 Palindromic Subsequences | |
| 1935 | Maximum Number of Words You Can Type | |
| 1936 | Add Minimum Number of Rungs | |
| 1941 | Check if All Characters Have Equal Number of Occurrences | |
| 1942 | The Number of the Smallest Unoccupied Chair | |
| 1944 | Number of Visible People in a Queue | |
| 1945 | Sum of Digits of String After Convert | |
| 1946 | Largest Number After Mutating Substring | |
| 1952 | Three Divisors | |
| 1954 | Minimum Garden Perimeter to Collect Enough Apples | |
| 1957 | Delete Characters to Make Fancy String | |
| 1958 | Check if Move is Legal | |
| 1961 | Check If String Is a Prefix of Array | |
| 1962 | Remove Stones to Minimize the Total | |
| 1963 | Minimum Number of Swaps to Make the String Balanced | |
| 1967 | Number of Strings That Appear as Substrings in Word | |
| 1968 | Array With Elements Not Equal to Average of Neighbors | |
| 1971 | Find if Path Exists in Graph | |
| 1974 | Minimum Time to Type Word Using Special Typewriter | |
| 1975 | Maximum Matrix Sum | |
| 1979 | Find Greatest Common Divisor of Array | |
| 1980 | Find Unique Binary String | |
| 1984 | Minimum Difference Between Highest and Lowest of K Scores | |
| 1985 | Find the Kth Largest Integer in the Array | |
| 1991 | Find the Middle Index in Array | |
| 1993 | Operations on Tree | |
| 1995 | Count Special Quadruplets | |
| 1996 | The Number of Weak Characters in the Game | |
| 2000 | Reverse Prefix of Word | |
| 2001 | Number of Pairs of Interchangeable Rectangles | |
| 2006 | Count Number of Pairs With Absolute Difference K | |
| 2007 | Find Original Array From Doubled Array | |
| 2008 | Maximum Earnings From Taxi | |
| 2011 | Final Value of Variable After Performing Operations | |
| 2013 | Detect Squares | |
| 2016 | Maximum Difference Between Increasing Elements | |
| 2022 | Convert 1D Array Into 2D Array | |
| 2023 | Number of Pairs of Strings With Concatenation Equal to Target | |
| 2024 | Maximize the Confusion of an Exam | |
| 2027 | Minimum Moves to Convert String | |
| 2028 | Find Missing Observations | |
| 2030 | Smallest K-Length Subsequence With Occurrences of a Letter | |
| 2032 | Two Out of Three | |
| 2034 | Stock Price Fluctuation | |
| 2037 | Minimum Number of Moves to Seat Everyone | |
| 2038 | Remove Colored Pieces if Both Neighbors are the Same Color | |
| 2042 | Check if Numbers Are Ascending in a Sentence | |
| 2043 | Simple Bank System | |
| 2044 | Count Number of Maximum Bitwise-OR Subsets | |
| 2047 | Number of Valid Words in a Sentence | |
| 2048 | Next Greater Numerically Balanced Number | |
| 2053 | Kth Distinct String in an Array | |
| 2054 | Two Best Non-Overlapping Events | |
| 2055 | Plates Between Candles | |
| 2057 | Smallest Index With Equal Value | |
| 2058 | Find the Minimum and Maximum Number of Nodes Between Critical Points | |
| 2059 | Minimum Operations to Convert Number | |
| 2062 | Count Vowel Substrings of a String | |
| 2063 | Vowels of All Substrings | |
| 2068 | Check Whether Two Strings are Almost Equivalent | |
| 2069 | Walking Robot Simulation II | |
| 2070 | Most Beautiful Item for Each Query | |
| 2073 | Time Needed to Buy Tickets | |
| 2075 | Decode the Slanted Ciphertext | |
| 2078 | Two Furthest Houses With Different Colors | |
| 2079 | Watering Plants | |
| 2080 | Range Frequency Queries | |
| 2081 | Sum of k-Mirror Numbers | |
| 2085 | Count Common Words With One Occurrence | |
| 2086 | Minimum Number of Food Buckets to Feed the Hamsters | |
| 2087 | Minimum Cost Homecoming of a Robot in a Grid | |
| 2088 | Count Fertile Pyramids in a Land | |
| 2089 | Find Target Indices After Sorting Array | |
| 2090 | K Radius Subarray Averages | |
| 2091 | Removing Minimum and Maximum From Array | |
| 2094 | Finding 3-Digit Even Numbers | |
| 2095 | Delete the Middle Node of a Linked List | |
| 2096 | Step-By-Step Directions From a Binary Tree Node to Another | |
| 2099 | Find Subsequence of Length K With the Largest Sum | |
| 2100 | Find Good Days to Rob the Bank | |
| 2101 | Detonate the Maximum Bombs | |
| 2102 | Sequentially Ordinal Rank Tracker | |
| 2103 | Rings and Rods | |
| 2105 | Watering Plants II | |
| 2106 | Maximum Fruits Harvested After at Most K Steps | |
| 2108 | Find First Palindromic String in the Array | |
| 2109 | Adding Spaces to a String | |
| 2110 | Number of Smooth Descent Periods of a Stock | |
| 2114 | Maximum Number of Words Found in Sentences | |
| 2115 | Find All Possible Recipes from Given Supplies | |
| 2119 | A Number After a Double Reversal | |
| 2120 | Execution of All Suffix Instructions Staying in a Grid | |
| 2121 | Intervals Between Identical Elements | |
| 2122 | Recover the Original Array | |
| 2124 | Check if All A's Appears Before All B's | |
| 2125 | Number of Laser Beams in a Bank | |
| 2126 | Destroying Asteroids | |
| 2129 | Capitalize the Title | |
| 2130 | Maximum Twin Sum of a Linked List | |
| 2131 | Longest Palindrome by Concatenating Two Letter Words | |
| 2133 | Check if Every Row and Column Contains All Numbers | |
| 2134 | Minimum Swaps to Group All 1's Together II | |
| 2135 | Count Words Obtained After Adding a Letter | |
| 2138 | Divide a String Into Groups of Size k | |
| 2139 | Minimum Moves to Reach Target Score | |
| 2140 | Solving Questions With Brainpower | |
| 2144 | Minimum Cost of Buying Candies With Discount | |
| 2145 | Count the Hidden Sequences | |
| 2147 | Number of Ways to Divide a Long Corridor | |
| 2148 | Count Elements With Strictly Smaller and Greater Elements | |
| 2149 | Rearrange Array Elements by Sign | |
| 2150 | Find All Lonely Numbers in the Array | |
| 2151 | Maximum Good People Based on Statements | |
| 2154 | Keep Multiplying Found Values by Two | |
| 2155 | All Divisions With the Highest Score of a Binary Array | |
| 2160 | Minimum Sum of Four Digit Number After Splitting Digits | |
| 2161 | Partition Array According to Given Pivot | |
| 2162 | Minimum Cost to Set Cooking Time | |
| 2164 | Sort Even and Odd Indices Independently | |
| 2165 | Smallest Value of the Rearranged Number | |
| 2166 | Design Bitset | |
| 2169 | Count Operations to Obtain Zero | |
| 2171 | Removing Minimum Number of Magic Beans | |
| 2176 | Count Equal and Divisible Pairs in an Array | |
| 2177 | Find Three Consecutive Integers That Sum to a Given Number | |
| 2178 | Maximum Split of Positive Even Integers | |
| 2180 | Count Integers With Even Digit Sum | |
| 2181 | Merge Nodes in Between Zeros | |
| 2182 | Construct String With Repeat Limit | |
| 2185 | Counting Words With a Given Prefix | |
| 2186 | Minimum Number of Steps to Make Two Strings Anagram II | |
| 2187 | Minimum Time to Complete Trips | |
| 2190 | Most Frequent Number Following Key In an Array | |
| 2191 | Sort the Jumbled Numbers | |
| 2194 | Cells in a Range on an Excel Sheet | |
| 2195 | Append K Integers With Minimal Sum | |
| 2196 | Create Binary Tree From Descriptions | |
| 2200 | Find All K-Distant Indices in an Array | |
| 2201 | Count Artifacts That Can Be Extracted | |
| 2206 | Divide Array Into Equal Pairs | |
| 2208 | Minimum Operations to Halve Array Sum | |
| 2210 | Count Hills and Valleys in an Array | |
| 2211 | Count Collisions on a Road | |
| 2212 | Maximum Points in an Archery Competition | |
| 2215 | Find the Difference of Two Arrays | |
| 2216 | Minimum Deletions to Make Array Beautiful | |
| 2217 | Find Palindrome With Fixed Length | |
| 2220 | Minimum Bit Flips to Convert Number | |
| 2221 | Find Triangular Sum of an Array | |
| 2222 | Number of Ways to Select Buildings | |
| 2224 | Minimum Number of Operations to Convert Time | |
| 2225 | Find Players With Zero or One Losses | |
| 2226 | Maximum Candies Allocated to K Children | |
| 2227 | Encrypt and Decrypt Strings | |
| 2231 | Largest Number After Digit Swaps by Parity | |
| 2232 | Minimize Result by Adding Parentheses to Expression | |
| 2233 | Maximum Product After K Increments | |
| 2235 | Add Two Integers | |
| 2236 | Root Equals Sum of Children | |
| 2239 | Find Closest Number to Zero | |
| 2240 | Number of Ways to Buy Pens and Pencils | |
| 2241 | Design an ATM Machine | |
| 2243 | Calculate Digit Sum of a String | |
| 2244 | Minimum Rounds to Complete All Tasks | |
| 2245 | Maximum Trailing Zeros in a Cornered Path | |
| 2248 | Intersection of Multiple Arrays | |
| 2249 | Count Lattice Points Inside a Circle | |
| 2251 | Number of Flowers in Full Bloom | |
| 2255 | Count Prefixes of a Given String | |
| 2256 | Minimum Average Difference | |
| 2259 | Remove Digit From Number to Maximize Result | |
| 2260 | Minimum Consecutive Cards to Pick Up | |
| 2264 | Largest 3-Same-Digit Number in String | |
| 2265 | Count Nodes Equal to Average of Subtree | |
| 2266 | Count Number of Texts | |
| 2269 | Find the K-Beauty of a Number | |
| 2270 | Number of Ways to Split Array | |
| 2271 | Maximum White Tiles Covered by a Carpet | |
| 2273 | Find Resultant Array After Removing Anagrams | |
| 2274 | Maximum Consecutive Floors Without Special Floors | |
| 2275 | Largest Combination With Bitwise AND Greater Than Zero | |
| 2278 | Percentage of Letter in String | |
| 2279 | Maximum Bags With Full Capacity of Rocks | |
| 2280 | Minimum Lines to Represent a Line Chart | |
| 2283 | Check if Number Has Equal Digit Count and Digit Value | |
| 2284 | Sender With Largest Word Count | |
| 2287 | Rearrange Characters to Make Target String | |
| 2289 | Steps to Make Array Non-decreasing | |
| 2290 | Minimum Obstacle Removal to Reach Corner | |
| 2293 | Min Max Game | |
| 2294 | Partition Array Such That Maximum Difference Is K | |
| 2295 | Replace Elements in an Array | |
| 2299 | Strong Password Checker II | |
| 2300 | Successful Pairs of Spells and Potions | |
| 2303 | Calculate Amount Paid in Taxes | |
| 2304 | Minimum Path Cost in a Grid | |
| 2306 | Naming a Company | |
| 2309 | Greatest English Letter in Upper and Lower Case | |
| 2315 | Count Asterisks | |
| 2317 | Maximum XOR After Operations | |
| 2319 | Check if Matrix Is X-Matrix | |
| 2320 | Count Number of Ways to Place Houses | |
| 2325 | Decode the Message | |
| 2326 | Spiral Matrix IV | |
| 2327 | Number of People Aware of a Secret | |
| 2331 | Evaluate Boolean Binary Tree | |
| 2335 | Minimum Amount of Time to Fill Cups | |
| 2336 | Smallest Number in Infinite Set | |
| 2337 | Move Pieces to Obtain a String | |
| 2341 | Maximum Number of Pairs in Array | |
| 2342 | Max Sum of a Pair With Equal Sum of Digits | |
| 2343 | Query Kth Smallest Trimmed Number | |
| 2344 | Minimum Deletions to Make Array Divisible | |
| 2347 | Best Poker Hand | |
| 2348 | Number of Zero-Filled Subarrays | |
| 2349 | Design a Number Container System | |
| 2351 | First Letter to Appear Twice | |
| 2352 | Equal Row and Column Pairs | |
| 2357 | Make Array Zero by Subtracting Equal Amounts | |
| 2358 | Maximum Number of Groups Entering a Competition | |
| 2360 | Longest Cycle in a Graph | |
| 2363 | Merge Similar Items | |
| 2364 | Count Number of Bad Pairs | |
| 2367 | Number of Arithmetic Triplets | |
| 2368 | Reachable Nodes With Restrictions | |
| 2373 | Largest Local Values in a Matrix | |
| 2374 | Node With Highest Edge Score | |
| 2375 | Construct Smallest Number From DI String | |
| 2379 | Minimum Recolors to Get K Consecutive Black Blocks | |
| 2381 | Shifting Letters II | |
| 2383 | Minimum Hours of Training to Win a Competition | |
| 2384 | Largest Palindromic Number | |
| 2389 | Longest Subsequence With Limited Sum | |
| 2390 | Removing Stars From a String | |
| 2391 | Minimum Amount of Time to Collect Garbage | |
| 2395 | Find Subarrays With Equal Sum | |
| 2396 | Strictly Palindromic Number | |
| 2397 | Maximum Rows Covered by Columns | |
| 2399 | Check Distances Between Same Letters | |
| 2400 | Number of Ways to Reach a Position After Exactly k Steps | |
| 2402 | Meeting Rooms III | |
| 2404 | Most Frequent Even Element | |
| 2405 | Optimal Partition of String | |
| 2409 | Count Days Spent Together | |
| 2410 | Maximum Matching of Players With Trainers | |
| 2412 | Minimum Money Required Before Transactions | |
| 2413 | Smallest Even Multiple | |
| 2414 | Length of the Longest Alphabetical Continuous Substring | |
| 2415 | Reverse Odd Levels of Binary Tree | |
| 2418 | Sort the People | |
| 2419 | Longest Subarray With Maximum Bitwise AND | |
| 2420 | Find All Good Indices | |
| 2423 | Remove Letter To Equalize Frequency | |
| 2425 | Bitwise XOR of All Pairings | |
| 2426 | Number of Pairs Satisfying Inequality | |
| 2427 | Number of Common Factors | |
| 2428 | Maximum Sum of an Hourglass | |
| 2429 | Minimize XOR | |
| 2432 | The Employee That Worked on the Longest Task | |
| 2433 | Find The Original Array of Prefix Xor | |
| 2434 | Using a Robot to Print the Lexicographically Smallest String | |
| 2437 | Number of Valid Clock Times | |
| 2441 | Largest Positive Integer That Exists With Its Negative | |
| 2442 | Count Number of Distinct Integers After Reverse Operations | |
| 2443 | Sum of Number and Its Reverse | |
| 2446 | Determine if Two Events Have Conflict | |
| 2451 | Odd String Difference | |
| 2453 | Destroy Sequential Targets | |
| 2455 | Average Value of Even Numbers That Are Divisible by Three | |
| 2457 | Minimum Addition to Make Integer Beautiful | |
| 2460 | Apply Operations to an Array | |
| 2465 | Number of Distinct Averages | |
| 2469 | Convert the Temperature | |
| 2475 | Number of Unequal Triplets in Array | |
| 2481 | Minimum Cuts to Divide a Circle | |
| 2482 | Difference Between Ones and Zeros in Row and Column | |
| 2483 | Minimum Penalty for a Shop | |
| 2485 | Find the Pivot Integer | |
| 2490 | Circular Sentence | |
| 2491 | Divide Players Into Teams of Equal Skill | |
| 2496 | Maximum Value of a String in an Array | |
| 2500 | Delete Greatest Value in Each Row | |
| 2501 | Longest Square Streak in an Array | |
| 2502 | Design Memory Allocator | |
| 2506 | Count Pairs Of Similar Strings | |
| 2509 | Cycle Length Queries in a Tree | |
| 2511 | Maximum Enemy Forts That Can Be Captured | |
| 2512 | Reward Top K Students | |
| 2515 | Shortest Distance to Target String in a Circular Array | |
| 2520 | Count the Digits That Divide a Number | |
| 2521 | Distinct Prime Factors of Product of Array | |
| 2523 | Closest Prime Numbers in Range | |
| 2525 | Categorize Box According to Criteria | |
| 2526 | Find Consecutive Integers from a Data Stream | |
| 2529 | Maximum Count of Positive Integer and Negative Integer | |
| 2535 | Difference Between Element Sum and Digit Sum of an Array | |
| 2540 | Minimum Common Value | |
| 2544 | Alternating Digit Sum | |
| 2549 | Count Distinct Numbers on Board | |
| 2550 | Count Collisions of Monkeys on a Polygon | |
| 2553 | Separate the Digits in an Array | |
| 2554 | Maximum Number of Integers to Choose From a Range I | |
| 2558 | Take Gifts From the Richest Pile | |
| 2559 | Count Vowel Strings in Ranges | |
| 2562 | Find the Array Concatenation Value | |
| 2566 | Maximum Difference by Remapping a Digit | |
| 2570 | Merge Two 2D Arrays by Summing Values | |
| 2574 | Left and Right Sum Differences | |
| 2578 | Split With Minimum Sum | |
| 2579 | Count Total Number of Colored Cells | |
| 2582 | Pass the Pillow | |
| 2585 | Number of Ways to Earn Points | |
| 2586 | Count the Number of Vowel Strings in Range | |
| 2591 | Distribute Money to Maximum Children | |
| 2593 | Find Score of an Array After Marking All Elements | |
| 2594 | Minimum Time to Repair Cars | |
| 2595 | Number of Even and Odd Bits | |
| 2596 | Check Knight Tour Configuration | |
| 2598 | Smallest Missing Non-negative Integer After Operations | |
| 2600 | K Items With the Maximum Sum | |
| 2601 | Prime Subtraction Operation | |
| 2602 | Minimum Operations to Make All Array Elements Equal | |
| 2605 | Form Smallest Number From Two Digit Arrays | |
| 2606 | Find the Substring With Maximum Cost | |
| 2609 | Find the Longest Balanced Substring of a Binary String | |
| 2611 | Mice and Cheese |

