1,675 LeetCode solutions in JavaScript https://leetcodejavascript.com Table of Contents: # Title Difficulty 1 Two Sum Easy 2 Add Two Numbers Medium 3 Longest Substring Without Repeating Characters Medium 4 Median of Two Sorted Arrays Hard 5 Longest Palindromic Substring Medium 6 ZigZag Conversion Medium 7 Reverse Integer Easy 8 String to Integer (atoi) Medium 9 Palindrome Number Easy 10 Regular Expression Matching Hard 11 Container With Most Water Medium 12 Integer to Roman Medium 13 Roman to Integer Easy 14 Longest Common Prefix Easy 15 3Sum Medium 16 3Sum Closest Medium 17 Letter Combinations of a Phone Number Medium 18 4Sum Medium 19 Remove Nth Node From End of List Medium 20 Valid Parentheses Easy 21 Merge Two Sorted Lists Easy 22 Generate Parentheses Medium 23 Merge k Sorted Lists Hard 24 Swap Nodes in Pairs Medium 25 Reverse Nodes in k-Group Hard 26 Remove Duplicates from Sorted Array Easy 27 Remove Element Easy 28 Implement strStr() Easy 29 Divide Two Integers Medium 30 Substring with Concatenation of All Words Hard 31 Next Permutation Medium 32 Longest Valid Parentheses Hard 33 Search in Rotated Sorted Array Medium 34 Find First and Last Position of Element in Sorted Array Medium 35 Search Insert Position Easy 36 Valid Sudoku Medium 37 Sudoku Solver Hard 38 Count and Say Medium 39 Combination Sum Medium 40 Combination Sum II Medium 41 First Missing Positive Hard 42 Trapping Rain Water Hard 43 Multiply Strings Medium 44 Wildcard Matching Hard 45 Jump Game II Medium 46 Permutations Medium 47 Permutations II Medium 48 Rotate Image Medium 49 Group Anagrams Medium 50 Pow(x, n) Medium 51 N-Queens Hard 52 N-Queens II Hard 53 Maximum Subarray Easy 54 Spiral Matrix Medium 55 Jump Game Medium 56 Merge Intervals Medium 57 Insert Interval Medium 58 Length of Last Word Easy 59 Spiral Matrix II Medium 60 Permutation Sequence Hard 61 Rotate List Medium 62 Unique Paths Medium 63 Unique Paths II Medium 64 Minimum Path Sum Medium 65 Valid Number Hard 66 Plus One Easy 67 Add Binary Easy 68 Text Justification Hard 69 Sqrt(x) Medium 70 Climbing Stairs Easy 71 Simplify Path Medium 72 Edit Distance Medium 73 Set Matrix Zeroes Medium 74 Search a 2D Matrix Medium 75 Sort Colors Medium 76 Minimum Window Substring Hard 77 Combinations Medium 78 Subsets Medium 79 Word Search Medium 80 Remove Duplicates from Sorted Array II Medium 81 Search in Rotated Sorted Array II Medium 82 Remove Duplicates from Sorted List II Medium 83 Remove Duplicates from Sorted List Easy 84 Largest Rectangle in Histogram Hard 85 Maximal Rectangle Hard 86 Partition List Medium 87 Scramble String Hard 88 Merge Sorted Array Easy 89 Gray Code Medium 90 Subsets II Medium 91 Decode Ways Medium 92 Reverse Linked List II Medium 93 Restore IP Addresses Medium 94 Binary Tree Inorder Traversal Easy 95 Unique Binary Search Trees II Medium 96 Unique Binary Search Trees Medium 97 Interleaving String Medium 98 Validate Binary Search Tree Medium 99 Recover Binary Search Tree Medium 100 Same Tree Easy 101 Symmetric Tree Easy 102 Binary Tree Level Order Traversal Medium 103 Binary Tree Zigzag Level Order Traversal Medium 104 Maximum Depth of Binary Tree Easy 105 Construct Binary Tree from Preorder and Inorder Traversal Medium 106 Construct Binary Tree from Inorder and Postorder Traversal Medium 107 Binary Tree Level Order Traversal II Medium 108 Convert Sorted Array to Binary Search Tree Easy 109 Convert Sorted List to Binary Search Tree Medium 110 Balanced Binary Tree Easy 111 Minimum Depth of Binary Tree Easy 112 Path Sum Easy 113 Path Sum II Medium 114 Flatten Binary Tree to Linked List Medium 115 Distinct Subsequences Hard 116 Populating Next Right Pointers in Each Node Medium 117 Populating Next Right Pointers in Each Node II Medium 118 Pascal's Triangle Easy 119 Pascal's Triangle II Easy 120 Triangle Medium 121 Best Time to Buy and Sell Stock Easy 122 Best Time to Buy and Sell Stock II Medium 123 Best Time to Buy and Sell Stock III Hard 124 Binary Tree Maximum Path Sum Hard 125 Valid Palindrome Easy 126 Word Ladder II Hard 127 Word Ladder Hard 128 Longest Consecutive Sequence Medium 129 Sum Root to Leaf Numbers Medium 130 Surrounded Regions Medium 131 Palindrome Partitioning Medium 132 Palindrome Partitioning II Hard 133 Clone Graph Medium 134 Gas Station Medium 135 Candy Hard 136 Single Number Easy 137 Single Number II Medium 138 Copy List with Random Pointer Medium 139 Word Break Medium 140 Word Break II Hard 141 Linked List Cycle Easy 142 Linked List Cycle II Medium 143 Reorder List Medium 144 Binary Tree Preorder Traversal Easy 145 Binary Tree Postorder Traversal Easy 146 LRU Cache Medium 147 Insertion Sort List Medium 148 Sort List Medium 149 Max Points on a Line Hard 150 Evaluate Reverse Polish Notation Medium 151 Reverse Words in a String Medium 152 Maximum Product Subarray Medium 153 Find Minimum in Rotated Sorted Array Medium 154 Find Minimum in Rotated Sorted Array II Hard 155 Min Stack Medium 160 Intersection of Two Linked Lists Medium 162 Find Peak Element Medium 164 Maximum Gap Medium 165 Compare Version Numbers Medium 166 Fraction to Recurring Decimal Medium 167 Two Sum II - Input Array Is Sorted Easy 168 Excel Sheet Column Title Easy 169 Majority Element Easy 171 Excel Sheet Column Number Easy 172 Factorial Trailing Zeroes Medium 173 Binary Search Tree Iterator Medium 174 Dungeon Game Hard 179 Largest Number Medium 187 Repeated DNA Sequences Medium 188 Best Time to Buy and Sell Stock IV Hard 189 Rotate Array Medium 190 Reverse Bits Easy 191 Number of 1 Bits Easy 198 House Robber Medium 199 Binary Tree Right Side View Medium 200 Number of Islands Medium 201 Bitwise AND of Numbers Range Medium 202 Happy Number Easy 203 Remove Linked List Elements Easy 204 Count Primes Medium 205 Isomorphic Strings Easy 206 Reverse Linked List Easy 207 Course Schedule Medium 208 Implement Trie (Prefix Tree) Medium 209 Minimum Size Subarray Sum Medium 210 Course Schedule II Medium 211 Design Add and Search Words Data Structure Medium 212 Word Search II Hard 213 House Robber II Medium 214 Shortest Palindrome Hard 215 Kth Largest Element in an Array Medium 216 Combination Sum III Medium 217 Contains Duplicate Easy 218 The Skyline Problem Hard 219 Contains Duplicate II Easy 220 Contains Duplicate III Hard 221 Maximal Square Medium 222 Count Complete Tree Nodes Easy 223 Rectangle Area Medium 224 Basic Calculator Hard 225 Implement Stack using Queues Easy 226 Invert Binary Tree Easy 227 Basic Calculator II Medium 228 Summary Ranges Easy 229 Majority Element II Medium 230 Kth Smallest Element in a BST Medium 231 Power of Two Easy 232 Implement Queue using Stacks Easy 233 Number of Digit One Hard 234 Palindrome Linked List Easy 235 Lowest Common Ancestor of a Binary Search Tree Easy 236 Lowest Common Ancestor of a Binary Tree Medium 237 Delete Node in a Linked List Easy 238 Product of Array Except Self Medium 239 Sliding Window Maximum Hard 240 Search a 2D Matrix II Medium 241 Different Ways to Add Parentheses Medium 242 Valid Anagram Easy 257 Binary Tree Paths Easy 258 Add Digits Easy 260 Single Number III Medium 263 Ugly Number Easy 264 Ugly Number II Medium 268 Missing Number Easy 273 Integer to English Words Hard 274 H-Index Medium 275 H-Index II Medium 278 First Bad Version Medium 279 Perfect Squares Medium 282 Expression Add Operators Hard 283 Move Zeroes Easy 284 Peeking Iterator Medium 287 Find the Duplicate Number Medium 289 Game of Life Medium 290 Word Pattern Easy 292 Nim Game Easy 295 Find Median from Data Stream Hard 297 Serialize and Deserialize Binary Tree Hard 299 Bulls and Cows Medium 300 Longest Increasing Subsequence Medium 301 Remove Invalid Parentheses Hard 303 Range Sum Query - Immutable Easy 304 Range Sum Query 2D - Immutable Medium 306 Additive Number Medium 307 Range Sum Query - Mutable Medium 309 Best Time to Buy and Sell Stock with Cooldown Medium 310 Minimum Height Trees Medium 312 Burst Balloons Hard 313 Super Ugly Number Medium 315 Count of Smaller Numbers After Self Hard 316 Remove Duplicate Letters Medium 318 Maximum Product of Word Lengths Medium 319 Bulb Switcher Medium 321 Create Maximum Number Hard 322 Coin Change Medium 324 Wiggle Sort II Medium 326 Power of Three Easy 327 Count of Range Sum Hard 328 Odd Even Linked List Medium 329 Longest Increasing Path in a Matrix Hard 330 Patching Array Hard 331 Verify Preorder Serialization of a Binary Tree Medium 332 Reconstruct Itinerary Hard 334 Increasing Triplet Subsequence Medium 335 Self Crossing Hard 336 Palindrome Pairs Hard 337 House Robber III Medium 338 Counting Bits Easy 341 Flatten Nested List Iterator Medium 342 Power of Four Easy 343 Integer Break Medium 344 Reverse String Easy 345 Reverse Vowels of a String Easy 347 Top K Frequent Elements Medium 349 Intersection of Two Arrays Easy 350 Intersection of Two Arrays II Easy 352 Data Stream as Disjoint Intervals Hard 354 Russian Doll Envelopes Hard 355 Design Twitter Medium 357 Count Numbers with Unique Digits Medium 363 Max Sum of Rectangle No Larger Than K Hard 365 Water and Jug Problem Medium 367 Valid Perfect Square Easy 368 Largest Divisible Subset Medium 371 Sum of Two Integers Medium 372 Super Pow Medium 373 Find K Pairs with Smallest Sums Medium 374 Guess Number Higher or Lower Medium 375 Guess Number Higher or Lower II Medium 376 Wiggle Subsequence Medium 377 Combination Sum IV Medium 378 Kth Smallest Element in a Sorted Matrix Medium 380 Insert Delete GetRandom O(1) Medium 381 Insert Delete GetRandom O(1) - Duplicates allowed Hard 382 Linked List Random Node Medium 383 Ransom Note Easy 384 Shuffle an Array Medium 385 Mini Parser Medium 386 Lexicographical Numbers Medium 387 First Unique Character in a String Easy 388 Longest Absolute File Path Medium 389 Find the Difference Easy 390 Elimination Game Medium 391 Perfect Rectangle Hard 392 Is Subsequence Easy 393 UTF-8 Validation Medium 394 Decode String Medium 395 Longest Substring with At Least K Repeating Characters Medium 396 Rotate Function Medium 397 Integer Replacement Medium 398 Random Pick Index Medium 399 Evaluate Division Medium 400 Nth Digit Medium 401 Binary Watch Easy 402 Remove K Digits Medium 403 Frog Jump Hard 404 Sum of Left Leaves Easy 405 Convert a Number to Hexadecimal Easy 406 Queue Reconstruction by Height Medium 407 Trapping Rain Water II Hard 409 Longest Palindrome Easy 410 Split Array Largest Sum Hard 412 Fizz Buzz Easy 413 Arithmetic Slices Medium 414 Third Maximum Number Easy 415 Add Strings Easy 416 Partition Equal Subset Sum Medium 417 Pacific Atlantic Water Flow Medium 419 Battleships in a Board Medium 420 Strong Password Checker Hard 421 Maximum XOR of Two Numbers in an Array Medium 423 Reconstruct Original Digits from English Medium 424 Longest Repeating Character Replacement Medium 427 Construct Quad Tree Medium 429 N-ary Tree Level Order Traversal Medium 430 Flatten a Multilevel Doubly Linked List Medium 432 All O`one Data Structure Hard 433 Minimum Genetic Mutation Medium 434 Number of Segments in a String Easy 435 Non-overlapping Intervals Medium 436 Find Right Interval Medium 437 Path Sum III Medium 438 Find All Anagrams in a String Medium 440 K-th Smallest in Lexicographical Order Hard 441 Arranging Coins Easy 442 Find All Duplicates in an Array Medium 443 String Compression Medium 445 Add Two Numbers II Medium 446 Arithmetic Slices II - Subsequence Hard 447 Number of Boomerangs Medium 448 Find All Numbers Disappeared in an Array Easy 449 Serialize and Deserialize BST Medium 450 Delete Node in a BST Medium 451 Sort Characters By Frequency Medium 452 Minimum Number of Arrows to Burst Balloons Medium 453 Minimum Moves to Equal Array Elements Medium 454 4Sum II Medium 455 Assign Cookies Easy 456 132 Pattern Medium 457 Circular Array Loop Medium 458 Poor Pigs Hard 459 Repeated Substring Pattern Easy 460 LFU Cache Hard 461 Hamming Distance Easy 462 Minimum Moves to Equal Array Elements II Medium 463 Island Perimeter Medium 464 Can I Win Medium 466 Count The Repetitions Hard 467 Unique Substrings in Wraparound String Medium 468 Validate IP Address Medium 470 Implement Rand10() Using Rand7() Medium 472 Concatenated Words Hard 473 Matchsticks to Square Medium 474 Ones and Zeroes Medium 475 Heaters Medium 476 Number Complement Easy 477 Total Hamming Distance Medium 478 Generate Random Point in a Circle Medium 479 Largest Palindrome Product Hard 480 Sliding Window Median Hard 481 Magical String Medium 482 License Key Formatting Easy 483 Smallest Good Base Hard 485 Max Consecutive Ones Easy 486 Predict the Winner Medium 488 Zuma Game Hard 491 Non-decreasing Subsequences Medium 492 Construct the Rectangle Easy 493 Reverse Pairs Hard 494 Target Sum Medium 495 Teemo Attacking Easy 496 Next Greater Element I Easy 497 Random Point in Non-overlapping Rectangles Medium 498 Diagonal Traverse Medium 500 Keyboard Row Easy 501 Find Mode in Binary Search Tree Easy 502 IPO Hard 503 Next Greater Element II Medium 504 Base 7 Easy 506 Relative Ranks Easy 507 Perfect Number Easy 508 Most Frequent Subtree Sum Medium 509 Fibonacci Number Easy 513 Find Bottom Left Tree Value Medium 514 Freedom Trail Hard 515 Find Largest Value in Each Tree Row Medium 516 Longest Palindromic Subsequence Medium 517 Super Washing Machines Hard 518 Coin Change II Medium 519 Random Flip Matrix Medium 520 Detect Capital Easy 521 Longest Uncommon Subsequence I Easy 522 Longest Uncommon Subsequence II Medium 523 Continuous Subarray Sum Medium 524 Longest Word in Dictionary through Deleting Medium 525 Contiguous Array Medium 526 Beautiful Arrangement Medium 528 Random Pick with Weight Medium 529 Minesweeper Medium 530 Minimum Absolute Difference in BST Easy 532 K-diff Pairs in an Array Medium 535 Encode and Decode TinyURL Medium 537 Complex Number Multiplication Medium 538 Convert BST to Greater Tree Medium 539 Minimum Time Difference Medium 540 Single Element in a Sorted Array Medium 541 Reverse String II Easy 542 01 Matrix Medium 543 Diameter of Binary Tree Easy 546 Remove Boxes Hard 547 Number of Provinces Medium 551 Student Attendance Record I Easy 552 Student Attendance Record II Hard 553 Optimal Division Medium 554 Brick Wall Medium 556 Next Greater Element III Medium 557 Reverse Words in a String III Easy 558 Logical OR of Two Binary Grids Represented as Quad-Trees Medium 559 Maximum Depth of N-ary Tree Easy 560 Subarray Sum Equals K Medium 561 Array Partition Easy 563 Binary Tree Tilt Easy 564 Find the Closest Palindrome Hard 565 Array Nesting Medium 566 Reshape the Matrix Easy 567 Permutation in String Medium 572 Subtree of Another Tree Easy 575 Distribute Candies Easy 576 Out of Boundary Paths Medium 581 Shortest Unsorted Continuous Subarray Medium 583 Delete Operation for Two Strings Medium 587 Erect the Fence Hard 589 N-ary Tree Preorder Traversal Easy 590 N-ary Tree Postorder Traversal Easy 591 Tag Validator Hard 592 Fraction Addition and Subtraction Medium 593 Valid Square Medium 594 Longest Harmonious Subsequence Easy 598 Range Addition II Easy 599 Minimum Index Sum of Two Lists Easy 600 Non-negative Integers without Consecutive Ones Hard 605 Can Place Flowers Easy 606 Construct String from Binary Tree Easy 609 Find Duplicate File in System Medium 611 Valid Triangle Number Medium 617 Merge Two Binary Trees Easy 621 Task Scheduler Medium 622 Design Circular Queue Medium 623 Add One Row to Tree Medium 624 Maximum Distance in Arrays Medium 628 Maximum Product of Three Numbers Easy 629 K Inverse Pairs Array Hard 630 Course Schedule III Hard 632 Smallest Range Covering Elements from K Lists Hard 633 Sum of Square Numbers Medium 636 Exclusive Time of Functions Medium 637 Average of Levels in Binary Tree Easy 638 Shopping Offers Medium 639 Decode Ways II Hard 640 Solve the Equation Medium 641 Design Circular Deque Medium 643 Maximum Average Subarray I Easy 645 Set Mismatch Medium 646 Maximum Length of Pair Chain Medium 647 Palindromic Substrings Medium 648 Replace Words Medium 649 Dota2 Senate Medium 650 2 Keys Keyboard Medium 652 Find Duplicate Subtrees Medium 653 Two Sum IV - Input is a BST Easy 654 Maximum Binary Tree Medium 655 Print Binary Tree Medium 657 Robot Return to Origin Easy 658 Find K Closest Elements Medium 659 Split Array into Consecutive Subsequences Medium 661 Image Smoother Easy 662 Maximum Width of Binary Tree Medium 664 Strange Printer Hard 665 Non-decreasing Array Medium 667 Beautiful Arrangement II Medium 668 Kth Smallest Number in Multiplication Table Hard 669 Trim a Binary Search Tree Medium 670 Maximum Swap Medium 671 Second Minimum Node In a Binary Tree Easy 672 Bulb Switcher II Medium 673 Number of Longest Increasing Subsequence Medium 674 Longest Continuous Increasing Subsequence Easy 675 Cut Off Trees for Golf Event Hard 676 Implement Magic Dictionary Medium 677 Map Sum Pairs Medium 678 Valid Parenthesis String Medium 679 24 Game Hard 680 Valid Palindrome II Easy 682 Baseball Game Easy 684 Redundant Connection Medium 685 Redundant Connection II Hard 686 Repeated String Match Easy 687 Longest Univalue Path Medium 688 Knight Probability in Chessboard Medium 689 Maximum Sum of 3 Non-Overlapping Subarrays Hard 690 Employee Importance Medium 691 Stickers to Spell Word Hard 692 Top K Frequent Words Medium 693 Binary Number with Alternating Bits Easy 695 Max Area of Island Medium 696 Count Binary Substrings Easy 697 Degree of an Array Easy 698 Partition to K Equal Sum Subsets Medium 699 Falling Squares Hard 700 Search in a Binary Search Tree Easy 701 Insert into a Binary Search Tree Medium 703 Kth Largest Element in a Stream Easy 704 Binary Search Easy 705 Design HashSet Easy 706 Design HashMap Easy 707 Design Linked List Medium 709 To Lower Case Easy 710 Random Pick with Blacklist Hard 712 Minimum ASCII Delete Sum for Two Strings Medium 713 Subarray Product Less Than K Medium 714 Best Time to Buy and Sell Stock with Transaction Fee Medium 715 Range Module Hard 717 1-bit and 2-bit Characters Easy 718 Maximum Length of Repeated Subarray Medium 719 Find K-th Smallest Pair Distance Hard 720 Longest Word in Dictionary Medium 721 Accounts Merge Medium 722 Remove Comments Medium 724 Find Pivot Index Easy 725 Split Linked List in Parts Medium 726 Number of Atoms Hard 728 Self Dividing Numbers Easy 729 My Calendar I Medium 730 Count Different Palindromic Subsequences Hard 731 My Calendar II Medium 732 My Calendar III Hard 733 Flood Fill Easy 735 Asteroid Collision Medium 736 Parse Lisp Expression Hard 738 Monotone Increasing Digits Medium 739 Daily Temperatures Medium 740 Delete and Earn Medium 741 Cherry Pickup Hard 743 Network Delay Time Medium 744 Find Smallest Letter Greater Than Target Easy 745 Prefix and Suffix Search Hard 746 Min Cost Climbing Stairs Easy 747 Largest Number At Least Twice of Others Easy 748 Shortest Completing Word Easy 749 Contain Virus Hard 752 Open the Lock Medium 753 Cracking the Safe Hard 754 Reach a Number Medium 756 Pyramid Transition Matrix Medium 757 Set Intersection Size At Least Two Hard 761 Special Binary String Hard 762 Prime Number of Set Bits in Binary Representation Easy 763 Partition Labels Medium 764 Largest Plus Sign Medium 765 Couples Holding Hands Hard 766 Toeplitz Matrix Easy 767 Reorganize String Medium 768 Max Chunks To Make Sorted II Hard 769 Max Chunks To Make Sorted Medium 770 Basic Calculator IV Hard 771 Jewels and Stones Easy 773 Sliding Puzzle Hard 775 Global and Local Inversions Medium 777 Swap Adjacent in LR String Medium 778 Swim in Rising Water Hard 779 K-th Symbol in Grammar Medium 780 Reaching Points Hard 781 Rabbits in Forest Medium 782 Transform to Chessboard Hard 783 Minimum Distance Between BST Nodes Easy 784 Letter Case Permutation Medium 785 Is Graph Bipartite? Medium 786 K-th Smallest Prime Fraction Medium 787 Cheapest Flights Within K Stops Medium 788 Rotated Digits Medium 789 Escape The Ghosts Medium 790 Domino and Tromino Tiling Medium 791 Custom Sort String Medium 792 Number of Matching Subsequences Medium 793 Preimage Size of Factorial Zeroes Function Hard 794 Valid Tic-Tac-Toe State Medium 795 Number of Subarrays with Bounded Maximum Medium 796 Rotate String Easy 797 All Paths From Source to Target Medium 798 Smallest Rotation with Highest Score Hard 799 Champagne Tower Medium 801 Minimum Swaps To Make Sequences Increasing Hard 802 Find Eventual Safe States Medium 803 Bricks Falling When Hit Hard 804 Unique Morse Code Words Easy 805 Split Array With Same Average Hard 806 Number of Lines To Write String Easy 807 Max Increase to Keep City Skyline Medium 808 Soup Servings Medium 809 Expressive Words Medium 810 Chalkboard XOR Game Hard 811 Subdomain Visit Count Medium 812 Largest Triangle Area Easy 813 Largest Sum of Averages Medium 814 Binary Tree Pruning Medium 815 Bus Routes Hard 816 Ambiguous Coordinates Medium 817 Linked List Components Medium 818 Race Car Hard 819 Most Common Word Easy 820 Short Encoding of Words Medium 821 Shortest Distance to a Character Easy 822 Card Flipping Game Medium 823 Binary Trees With Factors Medium 824 Goat Latin Easy 825 Friends Of Appropriate Ages Medium 826 Most Profit Assigning Work Medium 827 Making A Large Island Hard 828 Count Unique Characters of All Substrings of a Given String Hard 829 Consecutive Numbers Sum Hard 830 Positions of Large Groups Easy 831 Masking Personal Information Medium 832 Flipping an Image Easy 833 Find And Replace in String Medium 834 Sum of Distances in Tree Hard 835 Image Overlap Medium 836 Rectangle Overlap Easy 837 New 21 Game Medium 838 Push Dominoes Medium 839 Similar String Groups Hard 840 Magic Squares In Grid Medium 841 Keys and Rooms Medium 842 Split Array into Fibonacci Sequence Medium 843 Guess the Word Hard 844 Backspace String Compare Easy 845 Longest Mountain in Array Medium 846 Hand of Straights Medium 847 Shortest Path Visiting All Nodes Hard 848 Shifting Letters Medium 849 Maximize Distance to Closest Person Medium 850 Rectangle Area II Hard 851 Loud and Rich Medium 852 Peak Index in a Mountain Array Medium 853 Car Fleet Medium 854 K-Similar Strings Hard 855 Exam Room Medium 856 Score of Parentheses Medium 857 Minimum Cost to Hire K Workers Hard 858 Mirror Reflection Medium 859 Buddy Strings Easy 860 Lemonade Change Easy 861 Score After Flipping Matrix Medium 862 Shortest Subarray with Sum at Least K Hard 863 All Nodes Distance K in Binary Tree Medium 864 Shortest Path to Get All Keys Hard 865 Smallest Subtree with all the Deepest Nodes Medium 866 Prime Palindrome Medium 867 Transpose Matrix Easy 868 Binary Gap Easy 869 Reordered Power of 2 Medium 870 Advantage Shuffle Medium 871 Minimum Number of Refueling Stops Hard 872 Leaf-Similar Trees Easy 873 Length of Longest Fibonacci Subsequence Medium 874 Walking Robot Simulation Medium 875 Koko Eating Bananas Medium 876 Middle of the Linked List Easy 877 Stone Game Medium 878 Nth Magical Number Hard 879 Profitable Schemes Hard 880 Decoded String at Index Medium 881 Boats to Save People Medium 882 Reachable Nodes In Subdivided Graph Hard 883 Projection Area of 3D Shapes Easy 884 Uncommon Words from Two Sentences Easy 885 Spiral Matrix III Medium 886 Possible Bipartition Medium 887 Super Egg Drop Hard 888 Fair Candy Swap Easy 889 Construct Binary Tree from Preorder and Postorder Traversal Medium 890 Find and Replace Pattern Medium 891 Sum of Subsequence Widths Hard 892 Surface Area of 3D Shapes Easy 893 Groups of Special-Equivalent Strings Medium 894 All Possible Full Binary Trees Medium 895 Maximum Frequency Stack Hard 896 Monotonic Array Easy 897 Increasing Order Search Tree Easy 898 Bitwise ORs of Subarrays Medium 899 Orderly Queue Hard 900 RLE Iterator Medium 901 Online Stock Span Medium 902 Numbers At Most N Given Digit Set Hard 903 Valid Permutations for DI Sequence Hard 904 Fruit Into Baskets Medium 905 Sort Array By Parity Easy 906 Super Palindromes Hard 907 Sum of Subarray Minimums Medium 908 Smallest Range I Easy 909 Snakes and Ladders Medium 910 Smallest Range II Medium 911 Online Election Medium 912 Sort an Array Medium 913 Cat and Mouse Hard 914 X of a Kind in a Deck of Cards Medium 915 Partition Array into Disjoint Intervals Medium 916 Word Subsets Medium 917 Reverse Only Letters Easy 918 Maximum Sum Circular Subarray Medium 919 Complete Binary Tree Inserter Medium 920 Number of Music Playlists Hard 921 Minimum Add to Make Parentheses Valid Medium 922 Sort Array By Parity II Easy 923 3Sum With Multiplicity Medium 924 Minimize Malware Spread Hard 925 Long Pressed Name Easy 926 Flip String to Monotone Increasing Medium 927 Three Equal Parts Hard 928 Minimize Malware Spread II Hard 929 Unique Email Addresses Easy 930 Binary Subarrays With Sum Medium 931 Minimum Falling Path Sum Medium 932 Beautiful Array Medium 933 Number of Recent Calls Easy 934 Shortest Bridge Medium 935 Knight Dialer Medium 936 Stamping The Sequence Hard 937 Reorder Data in Log Files Medium 938 Range Sum of BST Easy 939 Minimum Area Rectangle Medium 940 Distinct Subsequences II Hard 941 Valid Mountain Array Easy 942 DI String Match Easy 943 Find the Shortest Superstring Hard 944 Delete Columns to Make Sorted Easy 945 Minimum Increment to Make Array Unique Medium 946 Validate Stack Sequences Medium 947 Most Stones Removed with Same Row or Column Medium 948 Bag of Tokens Medium 949 Largest Time for Given Digits Medium 950 Reveal Cards In Increasing Order Medium 951 Flip Equivalent Binary Trees Medium 952 Largest Component Size by Common Factor Hard 953 Verifying an Alien Dictionary Easy 954 Array of Doubled Pairs Medium 955 Delete Columns to Make Sorted II Medium 956 Tallest Billboard Hard 957 Prison Cells After N Days Medium 958 Check Completeness of a Binary Tree Medium 959 Regions Cut By Slashes Medium 960 Delete Columns to Make Sorted III Hard 961 N-Repeated Element in Size 2N Array Easy 962 Maximum Width Ramp Medium 963 Minimum Area Rectangle II Medium 964 Least Operators to Express Number Hard 965 Univalued Binary Tree Easy 966 Vowel Spellchecker Medium 967 Numbers With Same Consecutive Differences Medium 968 Binary Tree Cameras Hard 969 Pancake Sorting Medium 970 Powerful Integers Easy 971 Flip Binary Tree To Match Preorder Traversal Medium 972 Equal Rational Numbers Hard 973 K Closest Points to Origin Medium 974 Subarray Sums Divisible by K Medium 975 Odd Even Jump Hard 976 Largest Perimeter Triangle Easy 977 Squares of a Sorted Array Easy 978 Longest Turbulent Subarray Medium 979 Distribute Coins in Binary Tree Medium 980 Unique Paths III Hard 981 Time Based Key-Value Store Medium 982 Triples with Bitwise AND Equal To Zero Hard 983 Minimum Cost For Tickets Medium 984 String Without AAA or BBB Medium 985 Sum of Even Numbers After Queries Easy 986 Interval List Intersections Medium 987 Vertical Order Traversal of a Binary Tree Hard 988 Smallest String Starting From Leaf Medium 989 Add to Array-Form of Integer Easy 990 Satisfiability of Equality Equations Medium 991 Broken Calculator Medium 992 Subarrays with K Different Integers Hard 993 Cousins in Binary Tree Easy 994 Rotting Oranges Medium 995 Minimum Number of K Consecutive Bit Flips Hard 996 Number of Squareful Arrays Hard 997 Find the Town Judge Easy 998 Maximum Binary Tree II Medium 999 Available Captures for Rook Easy 1000 Minimum Cost to Merge Stones Hard 1001 Grid Illumination Hard 1002 Find Common Characters Easy 1003 Check If Word Is Valid After Substitutions Medium 1004 Max Consecutive Ones III Medium 1005 Maximize Sum Of Array After K Negations Easy 1006 Clumsy Factorial Medium 1007 Minimum Domino Rotations For Equal Row Medium 1008 Construct Binary Search Tree from Preorder Traversal Medium 1009 Complement of Base 10 Integer Easy 1010 Pairs of Songs With Total Durations Divisible by 60 Medium 1011 Capacity To Ship Packages Within D Days Medium 1012 Numbers With Repeated Digits Hard 1013 Partition Array Into Three Parts With Equal Sum Easy 1014 Best Sightseeing Pair Medium 1015 Smallest Integer Divisible by K Medium 1016 Binary String With Substrings Representing 1 To N Medium 1017 Convert to Base -2 Medium 1018 Binary Prefix Divisible By 5 Easy 1019 Next Greater Node In Linked List Medium 1020 Number of Enclaves Medium 1021 Remove Outermost Parentheses Easy 1022 Sum of Root To Leaf Binary Numbers Easy 1023 Camelcase Matching Medium 1024 Video Stitching Medium 1025 Divisor Game Easy 1026 Maximum Difference Between Node and Ancestor Medium 1027 Longest Arithmetic Subsequence Medium 1028 Recover a Tree From Preorder Traversal Hard 1029 Two City Scheduling Medium 1030 Matrix Cells in Distance Order Easy 1031 Maximum Sum of Two Non-Overlapping Subarrays Medium 1032 Stream of Characters Hard 1033 Moving Stones Until Consecutive Medium 1034 Coloring A Border Medium 1035 Uncrossed Lines Medium 1036 Escape a Large Maze Hard 1037 Valid Boomerang Easy 1038 Binary Search Tree to Greater Sum Tree Medium 1039 Minimum Score Triangulation of Polygon Medium 1040 Moving Stones Until Consecutive II Medium 1041 Robot Bounded In Circle Medium 1042 Flower Planting With No Adjacent Medium 1043 Partition Array for Maximum Sum Medium 1044 Longest Duplicate Substring Hard 1046 Last Stone Weight Easy 1047 Remove All Adjacent Duplicates In String Easy 1048 Longest String Chain Medium 1049 Last Stone Weight II Medium 1051 Height Checker Easy 1052 Grumpy Bookstore Owner Medium 1053 Previous Permutation With One Swap Medium 1054 Distant Barcodes Medium 1061 Lexicographically Smallest Equivalent String Medium 1071 Greatest Common Divisor of Strings Easy 1072 Flip Columns For Maximum Number of Equal Rows Medium 1073 Adding Two Negabinary Numbers Medium 1074 Number of Submatrices That Sum to Target Hard 1078 Occurrences After Bigram Easy 1079 Letter Tile Possibilities Medium 1080 Insufficient Nodes in Root to Leaf Paths Medium 1081 Smallest Subsequence of Distinct Characters Medium 1089 Duplicate Zeros Easy 1090 Largest Values From Labels Medium 1091 Shortest Path in Binary Matrix Medium 1092 Shortest Common Supersequence Hard 1093 Statistics from a Large Sample Medium 1094 Car Pooling Medium 1095 Find in Mountain Array Hard 1096 Brace Expansion II Hard 1103 Distribute Candies to People Easy 1104 Path In Zigzag Labelled Binary Tree Medium 1105 Filling Bookcase Shelves Medium 1106 Parsing A Boolean Expression Hard 1108 Defanging an IP Address Easy 1109 Corporate Flight Bookings Medium 1110 Delete Nodes And Return Forest Medium 1111 Maximum Nesting Depth of Two Valid Parentheses Strings Medium 1122 Relative Sort Array Easy 1123 Lowest Common Ancestor of Deepest Leaves Medium 1124 Longest Well-Performing Interval Medium 1125 Smallest Sufficient Team Hard 1128 Number of Equivalent Domino Pairs Easy 1129 Shortest Path with Alternating Colors Medium 1130 Minimum Cost Tree From Leaf Values Medium 1131 Maximum of Absolute Value Expression Medium 1137 N-th Tribonacci Number Easy 1138 Alphabet Board Path Medium 1139 Largest 1-Bordered Square Medium 1140 Stone Game II Medium 1143 Longest Common Subsequence Medium 1144 Decrease Elements To Make Array Zigzag Medium 1145 Binary Tree Coloring Game Medium 1146 Snapshot Array Medium 1147 Longest Chunked Palindrome Decomposition Hard 1154 Day of the Year Easy 1155 Number of Dice Rolls With Target Sum Medium 1156 Swap 741A For Longest Repeated Character Substring Medium 1157 Online Majority Element In Subarray Hard 1160 Find Words That Can Be Formed by Characters Easy 1161 Maximum Level Sum of a Binary Tree Medium 1162 As Far from Land as Possible Medium 1163 Last Substring in Lexicographical Order Hard 1169 Invalid Transactions Medium 1170 Compare Strings by Frequency of the Smallest Character Medium 1171 Remove Zero Sum Consecutive Nodes from Linked List Medium 1172 Dinner Plate Stacks Hard 1175 Prime Arrangements Easy 1177 Can Make Palindrome from Substring Medium 1178 Number of Valid Words for Each Puzzle Hard 1184 Distance Between Bus Stops Easy 1185 Day of the Week Easy 1186 Maximum Subarray Sum with One Deletion Medium 1187 Make Array Strictly Increasing Hard 1189 Maximum Number of Balloons Easy 1190 Reverse Substrings Between Each Pair of Parentheses Medium 1191 K-Concatenation Maximum Sum Medium 1192 Critical Connections in a Network Hard 1200 Minimum Absolute Difference Easy 1201 Ugly Number III Medium 1202 Smallest String With Swaps Medium 1203 Sort Items by Groups Respecting Dependencies Hard 1206 Design Skiplist Hard 1207 Unique Number of Occurrences Easy 1208 Get Equal Substrings Within Budget Medium 1209 Remove All Adjacent Duplicates in String II Medium 1210 Minimum Moves to Reach Target with Rotations Hard 1217 Minimum Cost to Move Chips to The Same Position Easy 1218 Longest Arithmetic Subsequence of Given Difference Medium 1219 Path with Maximum Gold Medium 1220 Count Vowels Permutation Hard 1221 Split a String in Balanced Strings Easy 1222 Queens That Can Attack the King Medium 1223 Dice Roll Simulation Hard 1224 Maximum Equal Frequency Hard 1227 Airplane Seat Assignment Probability Medium 1232 Check If It Is a Straight Line Easy 1233 Remove Sub-Folders from the Filesystem Medium 1234 Replace the Substring for Balanced String Medium 1235 Maximum Profit in Job Scheduling Hard 1237 Find Positive Integer Solution for a Given Equation Medium 1238 Circular Permutation in Binary Representation Medium 1239 Maximum Length of a Concatenated String with Unique Characters Medium 1240 Tiling a Rectangle with the Fewest Squares Hard 1247 Minimum Swaps to Make Strings Equal Medium 1248 Count Number of Nice Subarrays Medium 1249 Minimum Remove to Make Valid Parentheses Medium 1250 Check If It Is a Good Array Hard 1252 Cells with Odd Values in a Matrix Easy 1253 Reconstruct a 2-Row Binary Matrix Medium 1254 Number of Closed Islands Medium 1255 Maximum Score Words Formed by Letters Hard 1260 Shift 2D Grid Easy 1261 Find Elements in a Contaminated Binary Tree Medium 1262 Greatest Sum Divisible by Three Medium 1263 Minimum Moves to Move a Box to Their Target Location Hard 1266 Minimum Time Visiting All Points Easy 1267 Count Servers that Communicate Medium 1268 Search Suggestions System Medium 1269 Number of Ways to Stay in the Same Place After Some Steps Hard 1275 Find Winner on a Tic Tac Toe Game Easy 1276 Number of Burgers with No Waste of Ingredients Medium 1277 Count Square Submatrices with All Ones Medium 1278 Palindrome Partitioning III Hard 1281 Subtract the Product and Sum of Digits of an Integer Easy 1282 Group the People Given the Group Size They Belong To Medium 1283 Find the Smallest Divisor Given a Threshold Medium 1284 Minimum Number of Flips to Convert Binary Matrix to Zero Matrix Hard 1286 Iterator for Combination Medium 1287 Element Appearing More Than 25% In Sorted Array Easy 1288 Remove Covered Intervals Medium 1289 Minimum Falling Path Sum II Hard 1290 Convert Binary Number in a Linked List to Integer Easy 1291 Sequential Digits Medium 1292 Maximum Side Length of a Square with Sum Less than or Equal to Threshold Medium 1293 Shortest Path in a Grid with Obstacles Elimination Hard 1295 Find Numbers with Even Number of Digits Easy 1296 Divide Array in Sets of K Consecutive Numbers Medium 1297 Maximum Number of Occurrences of a Substring Medium 1298 Maximum Candies You Can Get from Boxes Hard 1299 Replace Elements with Greatest Element on Right Side Easy 1300 Sum of Mutated Array Closest to Target Medium 1301 Number of Paths with Max Score Hard 1302 Deepest Leaves Sum Medium 1304 Find N Unique Integers Sum up to Zero Easy 1305 All Elements in Two Binary Search Trees Medium 1306 Jump Game III Medium 1307 Verbal Arithmetic Puzzle Hard 1309 Decrypt String from Alphabet to Integer Mapping Easy 1310 XOR Queries of a Subarray Medium 1311 Get Watched Videos by Your Friends Medium 1312 Minimum Insertion Steps to Make a String Palindrome Hard 1313 Decompress Run-Length Encoded List Easy 1314 Matrix Block Sum Medium 1315 Sum of Nodes with Even-Valued Grandparent Medium 1316 Distinct Echo Substrings Hard 1317 Convert Integer to the Sum of Two No-Zero Integers Easy 1318 Minimum Flips to Make a OR b Equal to c Medium 1319 Number of Operations to Make Network Connected Medium 1320 Minimum Distance to Type a Word Using Two Fingers Hard 1323 Maximum 69 Number Easy 1324 Print Words Vertically Medium 1325 Delete Leaves With a Given Value Medium 1326 Minimum Number of Taps to Open to Water a Garden Hard 1328 Break a Palindrome Medium 1329 Sort the Matrix Diagonally Medium 1330 Reverse Subarray To Maximize Array Value Hard 1331 Rank Transform of an Array Easy 1332 Remove Palindromic Subsequences Easy 1333 Filter Restaurants by Vegan-Friendly, Price and Distance Medium 1334 Find the City With the Smallest Number of Neighbors at a Threshold Distance Medium 1335 Minimum Difficulty of a Job Schedule Hard 1337 The K Weakest Rows in a Matrix Easy 1338 Reduce Array Size to The Half Medium 1339 Maximum Product of Splitted Binary Tree Medium 1340 Jump Game V Hard 1342 Number of Steps to Reduce a Number to Zero Easy 1343 Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold Medium 1344 Angle Between Hands of a Clock Medium 1345 Jump Game IV Hard 1346 Check If N and Its Double Exist Easy 1347 Minimum Number of Steps to Make Two Strings Anagram Medium 1348 Tweet Counts Per Frequency Medium 1349 Maximum Students Taking Exam Hard 1351 Count Negative Numbers in a Sorted Matrix Easy 1352 Product of the Last K Numbers Medium 1353 Maximum Number of Events That Can Be Attended Medium 1354 Construct Target Array With Multiple Sums Hard 1356 Sort Integers by The Number of 1 Bits Easy 1357 Apply Discount Every n Orders Medium 1358 Number of Substrings Containing All Three Characters Medium 1359 Count All Valid Pickup and Delivery Options Hard 1360 Number of Days Between Two Dates Easy 1361 Validate Binary Tree Nodes Medium 1362 Closest Divisors Medium 1363 Largest Multiple of Three Hard 1365 How Many Numbers Are Smaller Than the Current Number Easy 1366 Rank Teams by Votes Medium 1367 Linked List in Binary Tree Medium 1368 Minimum Cost to Make at Least One Valid Path in a Grid Hard 1370 Increasing Decreasing String Easy 1371 Find the Longest Substring Containing Vowels in Even Counts Medium 1372 Longest ZigZag Path in a Binary Tree Medium 1373 Maximum Sum BST in Binary Tree Hard 1374 Generate a String With Characters That Have Odd Counts Easy 1375 Number of Times Binary String Is Prefix-Aligned Medium 1376 Time Needed to Inform All Employees Medium 1377 Frog Position After T Seconds Hard 1379 Find a Corresponding Node of a Binary Tree in a Clone of That Tree Easy 1380 Lucky Numbers in a Matrix Easy 1381 Design a Stack With Increment Operation Medium 1382 Balance a Binary Search Tree Medium 1383 Maximum Performance of a Team Hard 1385 Find the Distance Value Between Two Arrays Easy 1386 Cinema Seat Allocation Medium 1387 Sort Integers by The Power Value Medium 1388 Pizza With 3n Slices Hard 1389 Create Target Array in the Given Order Easy 1390 Four Divisors Medium 1391 Check if There is a Valid Path in a Grid Medium 1392 Longest Happy Prefix Hard 1394 Find Lucky Integer in an Array Easy 1395 Count Number of Teams Medium 1396 Design Underground System Medium 1397 Find All Good Strings Hard 1399 Count Largest Group Easy 1400 Construct K Palindrome Strings Medium 1401 Circle and Rectangle Overlapping Medium 1402 Reducing Dishes Hard 1403 Minimum Subsequence in Non-Increasing Order Easy 1404 Number of Steps to Reduce a Number in Binary Representation to One Medium 1405 Longest Happy String Medium 1406 Stone Game III Hard 1408 String Matching in an Array Easy 1409 Queries on a Permutation With Key Medium 1410 HTML Entity Parser Medium 1411 Number of Ways to Paint N × 3 Grid Hard 1413 Minimum Value to Get Positive Step by Step Sum Easy 1414 Find the Minimum Number of Fibonacci Numbers Whose Sum Is K Medium 1415 The k-th Lexicographical String of All Happy Strings of Length n Medium 1416 Restore The Array Hard 1417 Reformat The String Easy 1418 Display Table of Food Orders in a Restaurant Medium 1419 Minimum Number of Frogs Croaking Medium 1420 Build Array Where You Can Find The Maximum Exactly K Comparisons Hard 1422 Maximum Score After Splitting a String Easy 1423 Maximum Points You Can Obtain from Cards Medium 1424 Diagonal Traverse II Medium 1425 Constrained Subsequence Sum Hard 1431 Kids With the Greatest Number of Candies Easy 1432 Max Difference You Can Get From Changing an Integer Medium 1433 Check If a String Can Break Another String Medium 1434 Number of Ways to Wear Different Hats to Each Other Hard 1436 Destination City Easy 1437 Check If All 1's Are at Least Length K Places Away Easy 1438 Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit Medium 1439 Find the Kth Smallest Sum of a Matrix With Sorted Rows Hard 1441 Build an Array With Stack Operations Medium 1442 Count Triplets That Can Form Two Arrays of Equal XOR Medium 1443 Minimum Time to Collect All Apples in a Tree Medium 1444 Number of Ways of Cutting a Pizza Hard 1446 Consecutive Characters Easy 1447 Simplified Fractions Medium 1448 Count Good Nodes in Binary Tree Medium 1449 Form Largest Integer With Digits That Add up to Target Hard 1450 Number of Students Doing Homework at a Given Time Easy 1451 Rearrange Words in a Sentence Medium 1452 People Whose List of Favorite Companies Is Not a Subset of Another List Medium 1453 Maximum Number of Darts Inside of a Circular Dartboard Hard 1455 Check If a Word Occurs As a Prefix of Any Word in a Sentence Easy 1456 Maximum Number of Vowels in a Substring of Given Length Medium 1457 Pseudo-Palindromic Paths in a Binary Tree Medium 1458 Max Dot Product of Two Subsequences Hard 1460 Make Two Arrays Equal by Reversing Sub-arrays Easy 1461 Check If a String Contains All Binary Codes of Size K Medium 1462 Course Schedule IV Medium 1463 Cherry Pickup II Hard 1464 Maximum Product of Two Elements in an Array Easy 1465 Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts Medium 1466 Reorder Routes to Make All Paths Lead to the City Zero Medium 1467 Probability of a Two Boxes Having The Same Number of Distinct Balls Hard 1470 Shuffle the Array Easy 1471 The k Strongest Values in an Array Medium 1472 Design Browser History Medium 1473 Paint House III Hard 1475 Final Prices With a Special Discount in a Shop Easy 1476 Subrectangle Queries Medium 1477 Find Two Non-overlapping Sub-arrays Each With Target Sum Medium 1478 Allocate Mailboxes Hard 1480 Running Sum of 1d Array Easy 1481 Least Number of Unique Integers after K Removals Medium 1482 Minimum Number of Days to Make m Bouquets Medium 1483 Kth Ancestor of a Tree Node Hard 1486 XOR Operation in an Array Easy 1487 Making File Names Unique Medium 1488 Avoid Flood in The City Medium 1489 Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree Hard 1491 Average Salary Excluding the Minimum and Maximum Salary Easy 1492 The kth Factor of n Medium 1493 Longest Subarray of 1's After Deleting One Element Medium 1494 Parallel Courses II Hard 1496 Path Crossing Easy 1497 Check If Array Pairs Are Divisible by k Medium 1498 Number of Subsequences That Satisfy the Given Sum Condition Medium 1499 Max Value of Equation Hard 1502 Can Make Arithmetic Progression From Sequence Easy 1503 Last Moment Before All Ants Fall Out of a Plank Medium 1504 Count Submatrices With All Ones Medium 1505 Minimum Possible Integer After at Most K Adjacent Swaps On Digits Hard 1507 Reformat Date Easy 1508 Range Sum of Sorted Subarray Sums Medium 1509 Minimum Difference Between Largest and Smallest Value in Three Moves Medium 1510 Stone Game IV Hard 1512 Number of Good Pairs Easy 1513 Number of Substrings With Only 1s Medium 1514 Path with Maximum Probability Medium 1515 Best Position for a Service Centre Hard 1518 Water Bottles Easy 1519 Number of Nodes in the Sub-Tree With the Same Label Medium 1520 Maximum Number of Non-Overlapping Substrings Hard 1521 Find a Value of a Mysterious Function Closest to Target Hard 1523 Count Odd Numbers in an Interval Range Easy 1524 Number of Sub-arrays With Odd Sum Medium 1525 Number of Good Ways to Split a String Medium 1526 Minimum Number of Increments on Subarrays to Form a Target Array Hard 1528 Shuffle String Easy 1529 Minimum Suffix Flips Medium 1530 Number of Good Leaf Nodes Pairs Medium 1531 String Compression II Hard 1534 Count Good Triplets Easy 1535 Find the Winner of an Array Game Medium 1536 Minimum Swaps to Arrange a Binary Grid Medium 1537 Get the Maximum Score Hard 1539 Kth Missing Positive Number Easy 1540 Can Convert String in K Moves Medium 1541 Minimum Insertions to Balance a Parentheses String Medium 1542 Find Longest Awesome Substring Hard 1544 Make The String Great Easy 1545 Find Kth Bit in Nth Binary String Medium 1546 Maximum Number of Non-Overlapping Subarrays With Sum Equals Target Medium 1547 Minimum Cost to Cut a Stick Hard 1550 Three Consecutive Odds Easy 1551 Minimum Operations to Make Array Equal Medium 1552 Magnetic Force Between Two Balls Medium 1553 Minimum Number of Days to Eat N Oranges Hard 1556 Thousand Separator Easy 1557 Minimum Number of Vertices to Reach All Nodes Medium 1558 Minimum Numbers of Function Calls to Make Target Array Medium 1559 Detect Cycles in 2D Grid Medium 1560 Most Visited Sector in a Circular Track Easy 1561 Maximum Number of Coins You Can Get Medium 1562 Find Latest Group of Size M Medium 1563 Stone Game V Hard 1566 Detect Pattern of Length M Repeated K or More Times Easy 1567 Maximum Length of Subarray With Positive Product Medium 1568 Minimum Number of Days to Disconnect Island Hard 1569 Number of Ways to Reorder Array to Get Same BST Hard 1572 Matrix Diagonal Sum Easy 1573 Number of Ways to Split a String Medium 1574 Shortest Subarray to be Removed to Make Array Sorted Medium 1575 Count All Possible Routes Hard 1576 Replace All ?'s to Avoid Consecutive Repeating Characters Medium 1577 Number of Ways Where Square of Number Is Equal to Product of Two Numbers Medium 1578 Minimum Time to Make Rope Colorful Medium 1579 Remove Max Number of Edges to Keep Graph Fully Traversable Hard 1582 Special Positions in a Binary Matrix Easy 1583 Count Unhappy Friends Medium 1584 Min Cost to Connect All Points Medium 1585 Check If String Is Transformable With Substring Sort Operations Hard 1588 Sum of All Odd Length Subarrays Easy 1589 Maximum Sum Obtained of Any Permutation Medium 1590 Make Sum Divisible by P Medium 1591 Strange Printer II Hard 1592 Rearrange Spaces Between Words Easy 1593 Split a String Into the Max Number of Unique Substrings Medium 1594 Maximum Non Negative Product in a Matrix Medium 1595 Minimum Cost to Connect Two Groups of Points Hard 1598 Crawler Log Folder Easy 1599 Maximum Profit of Operating a Centennial Wheel Medium 1600 Throne Inheritance Medium 1601 Maximum Number of Achievable Transfer Requests Hard 1603 Design Parking System Easy 1604 Alert Using Same Key-Card Three or More Times in a One Hour Period Medium 1605 Find Valid Matrix Given Row and Column Sums Medium 1606 Find Servers That Handled Most Number of Requests Hard 1608 Special Array With X Elements Greater Than or Equal X Easy 1609 Even Odd Tree Medium 1610 Maximum Number of Visible Points Hard 1611 Minimum One Bit Operations to Make Integers Zero Hard 1614 Maximum Nesting Depth of the Parentheses Easy 1615 Maximal Network Rank Medium 1616 Split Two Strings to Make Palindrome Medium 1617 Count Subtrees With Max Distance Between Cities Hard 1619 Mean of Array After Removing Some Elements Easy 1620 Coordinate With Maximum Network Quality Medium 1621 Number of Sets of K Non-Overlapping Line Segments Medium 1622 Fancy Sequence Hard 1624 Largest Substring Between Two Equal Chara 10000 cters Easy 1625 Lexicographically Smallest String After Applying Operations Medium 1626 Best Team With No Conflicts Medium 1627 Graph Connectivity With Threshold Hard 1629 Slowest Key Easy 1630 Arithmetic Subarrays Medium 1631 Path With Minimum Effort Medium 1632 Rank Transform of a Matrix Hard 1636 Sort Array by Increasing Frequency Easy 1637 Widest Vertical Area Between Two Points Containing No Points Easy 1638 Count Substrings That Differ by One Character Medium 1639 Number of Ways to Form a Target String Given a Dictionary Hard 1640 Check Array Formation Through Concatenation Easy 1641 Count Sorted Vowel Strings Medium 1642 Furthest Building You Can Reach Medium 1643 Kth Smallest Instructions Hard 1646 Get Maximum in Generated Array Easy 1647 Minimum Deletions to Make Character Frequencies Unique Medium 1648 Sell Diminishing-Valued Colored Balls Medium 1649 Create Sorted Array through Instructions Hard 1652 Defuse the Bomb Easy 1653 Minimum Deletions to Make String Balanced Medium 1654 Minimum Jumps to Reach Home Medium 1655 Distribute Repeating Integers Hard 1656 Design an Ordered Stream Easy 1657 Determine if Two Strings Are Close Medium 1658 Minimum Operations to Reduce X to Zero Medium 1659 Maximize Grid Happiness Hard 1662 Check If Two String Arrays are Equivalent Easy 1663 Smallest String With A Given Numeric Value Medium 1664 Ways to Make a Fair Array Medium 1665 Minimum Initial Energy to Finish Tasks Hard 1668 Maximum Repeating Substring Easy 1669 Merge In Between Linked Lists Medium 1670 Design Front Middle Back Queue Medium 1671 Minimum Number of Removals to Make Mountain Array Hard 1672 Richest Customer Wealth Easy 1673 Find the Most Competitive Subsequence Medium 1674 Minimum Moves to Make Array Complementary Medium 1675 Minimize Deviation in Array Hard 1678 Goal Parser Interpretation Easy 1679 Max Number of K-Sum Pairs Medium 1680 Concatenation of Consecutive Binary Numbers Medium 1681 Minimum Incompatibility Hard 1684 Count the Number of Consistent Strings Easy 1685 Sum of Absolute Differences in a Sorted Array Medium 1686 Stone Game VI Medium 1687 Delivering Boxes from Storage to Ports Hard 1688 Count of Matches in Tournament Easy 1689 Partitioning Into Minimum Number Of Deci-Binary Numbers Medium 1690 Stone Game VII Medium 1691 Maximum Height by Stacking Cuboids Hard 1694 Reformat Phone Number Easy 1695 Maximum Erasure Value Medium 1696 Jump Game VI Medium 1697 Checking Existence of Edge Length Limited Paths Hard 1700 Number of Students Unable to Eat Lunch Easy 1701 Average Waiting Time Medium 1702 Maximum Binary String After Change Medium 1703 Minimum Adjacent Swaps for K Consecutive Ones Hard 1704 Determine if String Halves Are Alike Easy 1705 Maximum Number of Eaten Apples Medium 1706 Where Will the Ball Fall Medium 1707 Maximum XOR With an Element From Array Hard 1710 Maximum Units on a Truck Easy 1711 Count Good Meals Medium 1712 Ways to Split Array Into Three Subarrays Medium 1713 Minimum Operations to Make a Subsequence Hard 1716 Calculate Money in Leetcode Bank Easy 1717 Maximum Score From Removing Substrings Medium 1718 Construct the Lexicographically Largest Valid Sequence Medium 1719 Number Of Ways To Reconstruct A Tree Hard 1720 Decode XORed Array Easy 1721 Swapping Nodes in a Linked List Medium 1722 Minimize Hamming Distance After Swap Operations Medium 1723 Find Minimum Time to Finish All Jobs Hard 1725 Number Of Rectangles That Can Form The Largest Square Easy 1726 Tuple with Same Product Medium 1727 Largest Submatrix With Rearrangements Medium 1728 Cat and Mouse II Hard 1732 Find the Highest Altitude Easy 1733 Minimum Number of People to Teach Medium 1734 Decode XORed Permutation Medium 1735 Count Ways to Make Array With Product Hard 1736 Latest Time by Replacing Hidden Digits Easy 1737 Change Minimum Characters to Satisfy One of Three Conditions Medium 1738 Find Kth Largest XOR Coordinate Value Medium 1739 Building Boxes Hard 1742 Maximum Number of Balls in a Box Easy 1743 Restore the Array From Adjacent Pairs Medium 1744 Can You Eat Your Favorite Candy on Your Favorite Day? Medium 1745 Palindrome Partitioning IV Hard 1748 Sum of Unique Elements Easy 1749 Maximum Absolute Sum of Any Subarray Medium 1750 Minimum Length of String After Deleting Similar Ends Medium 1751 Maximum Number of Events That Can Be Attended II Hard 1752 Check if Array Is Sorted and Rotated Easy 1753 Maximum Score From Removing Stones Medium 1754 Largest Merge Of Two Strings Medium 1755 Closest Subsequence Sum Hard 1758 Minimum Changes To Make Alternating Binary String Easy 1759 Count Number of Homogenous Substrings Medium 1760 Minimum Limit of Balls in a Bag Medium 1761 Minimum Degree of a Connected Trio in a Graph Hard 1763 Longest Nice Substring Easy 1764 Form Array by Concatenating Subarrays of Another Array Medium 1765 Map of Highest Peak Medium 1766 Tree of Coprimes Hard 1768 Merge Strings Alternately Easy 1769 Minimum Number of Operations to Move All Balls to Each Box Medium 1770 Maximum Score from Performing Multiplication Operations Hard 1771 Maximize Palindrome Length From Subsequences Hard 1773 Count Items Matching a Rule Easy 1774 Closest Dessert Cost Medium 1775 Equal Sum Arrays With Minimum Number of Operations Medium 1776 Car Fleet II Hard 1779 Find Nearest Point That Has the Same X or Y Coordinate Easy 1780 Check if Number is a Sum of Powers of Three Medium 1781 Sum of Beauty of All Substrings Medium 1782 Count Pairs Of Nodes Hard 1784 Check if Binary String Has at Most One Segment of Ones Easy 1785 Minimum Elements to Add to Form a Given Sum Medium 1786 Number of Restricted Paths From First to Last Node Medium 1787 Make the XOR of All Segments Equal to Zero Hard 1790 Check if One String Swap Can Make Strings Equal Easy 1791 Find Center of Star Graph Easy 1792 Maximum Average Pass Ratio Medium 1793 Maximum Score of a Good Subarray Hard 1796 Second Largest Digit in a String Easy 1797 Design Authentication Manager Medium 1798 Maximum Number of Consecutive Values You Can Make Medium 1799 Maximize Score After N Operations Hard 1800 Maximum Ascending Subarray Sum Easy 1801 Number of Orders in the Backlog Medium 1802 Maximum Value at a Given Index in a Bounded Array Medium 1803 Count Pairs With XOR in a Range Hard 1805 Number of Different Integers in a String Easy 1806 Minimum Number of Operations to Reinitialize a Permutation Medium 1807 Evaluate the Bracket Pairs of a String Medium 1808 Maximize Number of Nice Divisors Hard 1812 Determine Color of a Chessboard Square Easy 1813 Sentence Similarity III Medium 1814 Count Nice Pairs in an Array Medium 1815 Maximum Number of Groups Getting Fresh Donuts Hard 1816 Truncate Sentence Easy 1817 Finding the Users Active Minutes Medium 1818 Minimum Absolute Sum Difference Medium 1819 Number of Different Subsequences GCDs Hard 1822 Sign of the Product of an Array Easy 1823 Find the Winner of the Circular Game Medium 1824 Minimum Sideway Jumps Medium 1825 Finding MK Average Hard 1827 Minimum Operations to Make the Array Increasing Easy 1828 Queries on Number of Points Inside a Circle Medium 1829 Maximum XOR for Each Query Medium 1830 Minimum Number of Operations to Make String Sorted Hard 1832 Check if the Sentence Is Pangram Easy 1833 Maximum Ice Cream Bars Medium 1834 Single-Threaded CPU Medium 1835 Find XOR Sum of All Pairs Bitwise AND Hard 1837 Sum of Digits in Base K Easy 1838 Frequency of the Most Frequent Element Medium 1839 Longest Substring Of All Vowels in Order Medium 1840 Maximum Building Height Hard 1844 Replace All Digits with Characters Easy 1845 Seat Reservation Manager Medium 1846 Maximum Element After Decreasing and Rearranging Medium 1847 Closest Room Hard 1848 Minimum Distance to the Target Element Easy 1849 Splitting a String Into Descending Consecutive Values Medium 1850 Minimum Adjacent Swaps to Reach the Kth Smallest Number Medium 1851 Minimum Interval to Include Each Query Hard 1854 Maximum Population Year Easy 1855 Maximum Distance Between a Pair of Values Medium 1856 Maximum Subarray Min-Product Medium 1857 Largest Color Value in a Directed Graph Hard 1859 Sorting the Sentence Easy 1860 Incremental Memory Leak Medium 1861 Rotating the Box Medium 1862 Sum of Floored Pairs Hard 1863 Sum of All Subset XOR Totals Easy 1864 Minimum Number of Swaps to Make the Binary String Alternating Medium 1865 Finding Pairs With a Certain Sum Medium 1866 Number of Ways to Rearrange Sticks With K Sticks Visible Hard 1869 Longer Contiguous Segments of Ones than Zeros Easy 1870 Minimum Speed to Arrive on Time Medium 1871 Jump Game VII Medium 1872 Stone Game VIII Hard 1876 Substrings of Size Three with Distinct Characters Easy 1877 Minimize Maximum Pair Sum in Array Medium 1878 Get Biggest Three Rhombus Sums in a Grid Medium 1879 Minimum XOR Sum of Two Arrays Hard 1880 Check if Word Equals Summation of Two Words Easy 1881 Maximum Value after Insertion Medium 1882 Process Tasks Using Servers Medium 1883 Minimum Skips to Arrive at Meeting On Time Hard 1884 Egg Drop With 2 Eggs and N Floors Medium 1886 Determine Whether Matrix Can Be Obtained By Rotation Easy 1887 Reduction Operations to Make the Array Elements Equal Medium 1888 Minimum Number of Flips to Make the Binary String Alternating Medium 1889 Minimum Space Wasted From Packaging Hard 1893 Check if All the Integers in a Range Are Covered Easy 1894 Find the Student that Will Replace the Chalk Medium 1895 Largest Magic Square Medium 1896 Minimum Cost to Change the Final Value of Expression Hard 1897 Redistribute Characters to Make All Strings Equal Easy 1898 Maximum Number of Removable Characters Medium 1899 Merge Triplets to Form Target Triplet Medium 1900 The Earliest and Latest Rounds Where Players Compete Hard 1901 Find a Peak Element II Medium 1903 Largest Odd Number in String Easy 1904 The Number of Full Rounds You Have Played Medium 1905 Count Sub Islands Medium 1906 Minimum Absolute Difference Queries Medium 1909 Remove One Element to Make the Array Strictly Increasing Easy 1910 Remove All Occurrences of a Substring Medium 1911 Maximum Alternating Subsequence Sum Medium 1912 Design Movie Rental System Hard 1913 Maximum Product Difference Between Two Pairs Easy 1914 Cyclically Rotating a Grid Medium 1915 Number of Wonderful Substrings Medium 1916 Count Ways to Build Rooms in an Ant Colony Hard 1920 Build Array from Permutation Easy 1921 Eliminate Maximum Number of Monsters Medium 1922 Count Good Numbers Medium 1923 Longest Common Subpath Hard 1925 Count Square Sum Triples Easy 1926 Nearest Exit from Entrance in Maze Medium 1927 Sum Game Medium 1928 Minimum Cost to Reach Destination in Time Hard 1929 Concatenation of Array Easy 1930 Unique Length-3 Palindromic Subsequences Medium 1931 Painting a Grid With Three Different Colors Hard 1932 Merge BSTs to Create Single BST Hard 1935 Maximum Number of Words You Can Type Easy 1936 Add Minimum Number of Rungs Medium 1937 Maximum Number of Points with Cost Medium 1938 Maximum Genetic Difference Query Hard 1941 Check if All Characters Have Equal Number of Occurrences Easy 1943 Describe the Painting Medium 1944 Number of Visible People in a Queue Hard 1945 Sum of Digits of String After Convert Easy 1946 Largest Number After Mutating Substring Medium 1947 Maximum Compatibility Score Sum Medium 1948 Delete Duplicate Folders in System Hard 1952 Three Divisors Easy 1953 Maximum Number of Weeks for Which You Can Work Medium 1954 Minimum Garden Perimeter to Collect Enough Apples Medium 1955 Count Number of Special Subsequences Hard 1957 Delete Characters to Make Fancy String Easy 1958 Check if Move is Legal Medium 1959 Minimum Total Space Wasted With K Resizing Operations Medium 1960 Maximum Product of the Length of Two Palindromic Substrings Hard 1961 Check If String Is a Prefix of Array Easy 1963 Minimum Number of Swaps to Make the String Balanced Medium 1964 Find the Longest Valid Obstacle Course at Each Position Hard 1967 Number of Strings That Appear as Substrings in Word Easy 1968 Array With Elements Not Equal to Average of Neighbors Medium 1969 Minimum Non-Zero Product of the Array Elements Medium 1970 Last Day Where You Can Still Cross Hard 1971 Find if Path Exists in Graph Easy 1974 Minimum Time to Type Word Using Special Typewriter Easy 1975 Maximum Matrix Sum Medium 1976 Number of Ways to Arrive at Destination Medium 1977 Number of Ways to Separate Numbers Hard 1979 Find Greatest Common Divisor of Array Easy 1980 Find Unique Binary String Medium 1981 Minimize the Difference Between Target and Chosen Elements Medium 1982 Find Array Given Subset Sums Hard 1984 Minimum Difference Between Highest and Lowest of K Scores Easy 1985 Find the Kth Largest Integer in the Array Medium 1986 Minimum Number of Work Sessions to Finish the Tasks Medium 1987 Number of Unique Good Subsequences Hard 1991 Find the Middle Index in Array Easy 1992 Find All Groups of Farmland Medium 1993 Operations on Tree Medium 1996 The Number of Weak Characters in the Game Medium 2000 Reverse Prefix of Word Easy 2011 Final Value of Variable After Performing Operations Easy 2016 Maximum Difference Between Increasing Elements Easy 2017 Grid Game Medium 2027 Minimum Moves to Convert String Easy 2033 Minimum Operations to Make a Uni-Value Grid Medium 2037 Minimum Number of Moves to Seat Everyone Easy 2047 Number of Valid Words in a Sentence Easy 2053 Kth Distinct String in an Array Medium 2071 Maximum Number of Tasks You Can Assign Hard 2085 Count Common Words With One Occurrence Easy 2095 Delete the Middle Node of a Linked List Medium 2099 Find Subsequence of Length K With the Largest Sum Medium 2114 Maximum Number of Words Found in Sentences Easy 2115 Find All Possible Recipes from Given Supplies Medium 2116 Check if a Parentheses String Can Be Valid Medium 2127 Maximum Employees to Be Invited to a Meeting Hard 2129 Capitalize the Title Easy 2130 Maximum Twin Sum of a Linked List Medium 2140 Solving Questions With Brainpower Medium 2145 Count the Hidden Sequences Medium 2154 Keep Multiplying Found Values by Two Easy 2161 Partition Array According to Given Pivot Medium 2176 Count Equal and Divisible Pairs in an Array Easy 2179 Count Good Triplets in an Array Hard 2185 Counting Words With a Given Prefix Easy 2206 Divide Array Into Equal Pairs Easy 2215 Find the Difference of Two Arrays Easy 2226 Maximum Candies Allocated to K Children Medium 2235 Add Two Integers Easy 2244 Minimum Rounds to Complete All Tasks Medium 2270 Number of Ways to Split Array Medium 2300 Successful Pairs of Spells and Potions Medium 2302 Count Subarrays With Score Less Than K Hard 2336 Smallest Number in Infinite Set Medium 2338 Count the Number of Ideal Arrays Hard 2342 Max Sum of a Pair With Equal Sum of Digits Medium 2349 Design a Number Container System Medium 2352 Equal Row and Column Pairs Medium 2364 Count Number of Bad Pairs Medium 2375 Construct Smallest Number From DI String Medium 2379 Minimum Recolors to Get K Consecutive Black Blocks Easy 2381 Shifting Letters II Medium 2390 Removing Stars From a String Medium 2396 Strictly Palindromic Number Medium 2401 Longest Nice Subarray Medium 2413 Smallest Even Multiple Easy 2425 Bitwise XOR of All Pairings Medium 2427 Number of Common Factors Easy 2429 Minimize XOR Medium 2444 Count Subarrays With Fixed Bounds Hard 2460 Apply Operations to an Array Easy 2462 Total Cost to Hire K Workers Medium 2467 Most Profitable Path in a Tree Medium 2469 Convert the Temperature Easy 2482 Difference Between Ones and Zeros in Row and Column Medium 2490 Circular Sentence Easy 2493 Divide Nodes Into the Maximum Number of Groups Hard 2503 Maximum Number of Points From Grid Queries Hard 2523 Closest Prime Numbers in Range Medium 2529 Maximum Count of Positive Integer and Negative Integer Easy 2535 Difference Between Element Sum and Digit Sum of an Array Easy 2537 Count the Number of Good Subarrays Medium 2542 Maximum Subsequence Score Medium 2551 Put Marbles in Bags Hard 2559 Count Vowel Strings in Ranges Medium 2560 House Robber IV Medium 2563 Count the Number of Fair Pairs Medium 2570 Merge Two 2D Arrays by Summing Values Easy 2579 Count Total Number of Colored Cells Medium 2594 Minimum Time to Repair Cars Medium 2618 Check if Object Instance of Class Medium 2619 Array Prototype Last Easy 2620 Counter Easy 2621 Sleep Easy 2622 Cache With Time Limit Medium 2623 Memoize Medium 2624 Snail Traversal Medium 2625 Flatten Deeply Nested Array Medium 2626 Array Reduce Transformation Easy 2627 Debounce Medium 2629 Function Composition Easy 2630 Memoize II Hard 2631 Group By Medium 2634 Filter Elements from Array Easy 2635 Apply Transform Over Each Element in Array Easy 2637 Promise Time Limit Medium 2648 Generate Fibonacci Sequence Easy 2649 Nested Array Generator Medium 2650 Design Cancellable Function Hard 2657 Find the Prefix Common Array of Two Arrays Medium 2658 Maximum Number of Fish in a Grid Medium 2661 First Completely Painted Row or Column Medium 2665 Counter II Easy 2666 Allow One Function Call Easy 2667 Create Hello World Function Easy 2677 Chunk Array Easy 2683 Neighboring Bitwise XOR Medium 2685 Count the Number of Complete Components Medium 2693 Call Function with Custom Context Medium 2694 Event Emitter Medium 2695 Array Wrapper Easy 2698 Find the Punishment Number of an Integer Medium 2703 Return Length of Arguments Passed Easy 2704 To Be Or Not To Be Easy 2705 Compact Object Medium 2715 Timeout Cancellation Easy 2721 Execute Asynchronous Functions in Parallel Medium 2722 Join Two Arrays by ID Medium 2723 Add Two Promises Easy 2724 Sort By Easy 2725 Interval Cancellation Easy 2726 Calculator with Method Chaining Easy 2727 Is Object Empty Easy 2780 Minimum Index of a Valid Split Medium 2799 Count Complete Subarrays in an Array Medium 2818 Apply Operations to Maximize Score Hard 2843 Count Symmetric Integers Easy 2845 Count of Interesting Subarrays Medium 2873 Maximum Value of an Ordered Triplet I Easy 2874 Maximum Value of an Ordered Triplet II Medium 2948 Make Lexicographically Smallest Array by Swapping Elements Medium 2962 Count Subarrays Where Max Element Appears at Least K Times Medium 2965 Find Missing and Repeated Values Easy 2999 Count the Number of Powerful Integers Hard 3042 Count Prefix and Suffix Pairs I Easy 3066 Minimum Operations to Exceed Threshold Value II Medium 3105 Longest Strictly Increasing or Strictly Decreasing Subarray Easy 3108 Minimum Cost Walk in Weighted Graph Hard 3110 Score of a String Easy 3151 Special Array I Easy 3160 Find the Number of Distinct Colors Among the Balls Medium 3169 Count Days Without Meetings Medium 3174 Clear Digits Easy 3191 Minimum Operations to Make Binary Array Elements Equal to One I Medium 3208 Alternating Groups II Medium 3223 Minimum Length of String After Operations Medium 3272 Find the Count of Good Integers Hard 3306 Count of Substrings Containing Every Vowel and K Consonants II Medium 3356 Zero Array Transformation II Medium 3375 Minimum Operations to Make Array Values Equal to K Easy 3392 Count Subarrays of Length Three With a Condition Easy 3394 Check if Grid can be Cut into Sections Medium 3396 Minimum Number of Operations to Make Elements in Array Distinct Easy 3397 Maximum Number of Distinct Elements After Operations Medium 3402 Minimum Operations to Make Columns Strictly Increasing Easy 3452 Sum of Good Numbers Easy 3461 Check If Digits Are Equal in String After Operations I Easy 3462 Maximum Sum With at Most K Elements Medium 3463 Check If Digits Are Equal in String After Operations II Hard 3464 Maximize the Distance Between Points on a Square Hard License MIT License Copyright (c) 2019-2025 Josh Crozier