| 1. Two Sum |
代码实现 |
—- |
| 3. Longest Substring Without Repeating Characters |
代码实现 |
—- |
| 4. Median of Two Sorted Arrays |
代码实现 |
— |
| 6. ZigZag Conversion |
代码实现 |
—- |
| 11. Container With Most Water |
代码实现 |
— |
| 15. 3Sum |
代码实现 |
视频 |
| 16. 3Sum Closest |
代码实现 |
—– |
| 17. Letter Combinations of a Phone Number |
代码实现 |
—– |
| 18. 4Sum |
代码实现 |
视频 |
| 19. Remove Nth Node From End of List |
代码实现 |
—– |
| 20. Valid Parentheses |
代码实现 |
—– |
| 22. Generate Parentheses |
代码实现 |
视频 |
| 24. Swap Nodes in Pairs |
代码实现 |
—- |
| 26. Remove Duplicates from Sorted Array |
代码实现 |
视频 |
| 27. Remove Element |
代码实现 |
—- |
| 28. Implement strStr() |
代码实现 |
—- |
| 30. Substring with Concatenation of All Words |
代码实现 |
—- |
| 31. Next Permutation |
代码实现 |
视频 |
| 33. Search in Rotated Sorted Array |
代码实现 |
视频 |
| 36. Valid Sudoku |
代码实现 |
— |
| 37. Sudoku Solver |
代码实现 |
— |
| 39. Combination Sum |
代码实现 |
— |
| 40. Combination Sum II |
代码实现 |
— |
| 42. Trapping Rain Water |
代码实现 |
视频 |
| 45. Jump Game II |
代码实现 |
视频 |
| 46. Permutations |
代码实现 |
— |
| 47. Permutations II |
代码实现 |
— |
| 48. Rotate Image |
代码实现 |
— |
| 50. Pow(x, n) |
代码实现 |
— |
| 51. N-Queens |
代码实现 |
— |
| 53. Maximum Subarray |
代码实现 |
— |
| 54. Spiral Matrix |
代码实现 |
—- |
| 55. Jump Game |
代码实现 |
视频 |
| 56. Merge Intervals |
代码实现 |
—- |
| 59. Spiral Matrix II |
代码实现 |
—- |
| 60. Permutation Sequence |
代码实现 |
视频 |
| 62. Unique Paths |
代码实现 |
—- |
| 63. Unique Paths II |
代码实现 |
—- |
| 66. Plus One |
代码实现 |
— |
| 70. Climbing Stairs |
代码实现 |
—- |
| 71. Simplify Path |
代码实现 |
—- |
| 72. Edit Distance |
代码实现 |
—- |
| 73. Set Matrix Zeroes |
代码实现 |
— |
| 77. Combinations |
代码实现 |
— |
| 78. Subsets |
代码实现 |
— |
| 80. Remove Duplicates from Sorted Array II |
代码实现 |
视频 |
| 81. Search in Rotated Sorted Array II |
代码实现 |
视频 |
| 84. Largest Rectangle in Histogram |
代码实现 |
— |
| 89. Gray Code |
代码实现 |
视频, 题解 |
| 90. Subsets II |
代码实现 |
— |
| 93. Restore IP Addresses |
代码实现 |
— |
| 94. Binary Tree Inorder Traversal |
代码实现 |
— |
| 96. Unique Binary Search Trees |
代码实现 |
— |
| 98. Validate Binary Search Tree |
代码实现 |
— |
| 99. Recover Binary Search Tree |
代码实现 |
— |
| 100. Same Tree |
代码实现 |
— |
| 101. Symmetric Tree |
代码实现 |
—- |
| 102. Binary Tree Level Order Traversal |
代码实现 |
—- |
| 104. Maximum Depth of Binary Tree |
代码实现 |
—- |
| 106. Construct Binary Tree from Inorder and Postorder Traversal |
代码实现 |
—- |
| 108. Convert Sorted Array to Binary Search Tree |
代码实现 |
—- |
| 110. Balanced Binary Tree |
代码实现 |
—- |
| 111. Minimum Depth of Binary Tree |
代码实现 |
—- |
| 112. Path Sum |
代码实现 |
—- |
| 113. Path Sum II |
代码实现 |
—- |
| 115. Distinct Subsequences |
代码实现 |
—- |
| 120. Triangle |
代码实现 |
—- |
| 121. Best Time to Buy and Sell Stock |
代码实现 |
— |
| 122. Best Time to Buy and Sell Stock II |
代码实现 |
— |
| 123. Best Time to Buy and Sell Stock III |
代码实现 |
— |
| 128. Longest Consecutive Sequence |
代码实现 |
视频 |
| 131. Palindrome Partitioning |
代码实现 |
— |
| 133. Clone Graph |
代码实现 |
— |
| 134. Gas Station |
代码实现 |
视频 |
| 135. Candy |
代码实现 |
—- |
| 136. Single Number |
代码实现 |
— |
| 137. Single Number II |
代码实现 |
—– |
| 139. Word Break |
代码实现 |
—– |
| 141. Linked List Cycle |
代码实现 |
—- |
| 142. Linked List Cycle II |
代码实现 |
—– |
| 144. Binary Tree Preorder Traversal |
代码实现 |
—– |
| 145. Binary Tree Postorder Traversal |
代码实现 |
—- |
| 150. Evaluate Reverse Polish Notation |
代码实现 |
—– |
| 151. Reverse Words in a String |
代码实现 |
—– |
| 160. Intersection of Two Linked Lists |
代码实现 |
— |
| 172. Factorial Trailing Zeroes |
代码实现 |
|
| 188. Best Time to Buy and Sell Stock IV |
代码实现 |
— |
| 190. Reverse Bits |
代码实现 |
— |
| 198. House Robber |
代码实现 |
— |
| 202. Happy Number |
代码实现 |
— |
| 203. Remove Linked List Elements |
代码实现 |
— |
| 206. Reverse Linked List |
代码实现 |
— |
| 209. Minimum Size Subarray Sum |
代码实现 |
— |
| 213. House Robber II |
代码实现 |
— |
| 216. Combination Sum III |
代码实现 |
— |
| 219. Contains Duplicate II |
代码实现 |
题解 |
| 222. Count Complete Tree Nodes |
代码实现 |
— |
| 225. Implement Stack using Queues |
代码实现 |
— |
| 232. Implement Queue using Stacks |
代码实现 |
—- |
| 235. Lowest Common Ancestor of a Binary Search Tree |
代码实现 |
—- |
| 236. Lowest Common Ancestor of a Binary Tree |
代码实现 |
—- |
| 239. Sliding Window Maximum |
代码实现 |
—- |
| 241. Different Ways to Add Parentheses |
代码实现 |
— |
| 242. Valid Anagram |
代码实现 |
— |
| 256. Paint House |
代码实现 |
— |
| 257. Binary Tree Paths |
代码实现 |
— |
| 258. Add Digits |
代码实现 |
题解 |
| 260. Single Number III |
代码实现 |
— |
| 268. Missing Number |
代码实现 |
— |
| 269. Alien Dictionary |
代码实现 |
题解, 视频 |
| 279. Perfect Squares |
代码实现 |
—- |
| 300. Longest Increasing Subsequence |
代码实现 |
—- |
| 306. Additive Number |
代码实现 |
题解, 视频 |
| 307. Range Sum Query - Mutable |
代码实现 |
题解, 视频 |
| 309. Best Time to Buy and Sell Stock with Cooldown |
代码实现 |
—- |
| 318. Maximum Product of Word Lengths |
代码实现 |
— |
| 322. Coin Change |
代码实现 |
— |
| 324. Wiggle Sort II |
代码实现 |
— |
| 332. Reconstruct Itinerary |
代码实现 |
— |
| 334. Increasing Triplet Subsequence |
代码实现 |
题解 |
| 337. House Robber III |
代码实现 |
— |
| 343. Integer Break |
代码实现 |
— |
| 344. Reverse String |
代码实现 |
— |
| 346. Moving Average from Data Stream |
代码实现 |
— |
| 349. Intersection of Two Arrays |
代码实现 |
— |
| 357. Count Numbers with Unique Digits |
代码实现 |
题解, 视频 |
| 372. Super Pow |
代码实现 |
题解 |
| 373. Find K Pairs with Smallest Sums |
代码实现 |
题解 |
| 376. Wiggle Subsequence |
代码实现 |
— |
| 377. Combination Sum IV |
代码实现 |
— |
| 380. Insert Delete GetRandom O(1) |
代码实现 |
题解, 视频 |
| 382. Linked List Random Node |
代码实现 |
— |
| 383. Ransom Note |
代码实现 |
— |
| 385. Mini Parser |
代码实现 |
题解, 视频 |
| 386. Lexicographical Numbers |
代码实现 |
题解, 视频 |
| 388. Longest Absolute File Path |
代码实现 |
题解, 视频 |
| 390. Elimination Game |
代码实现 |
— |
| 392. Is Subsequence |
代码实现 |
— |
| 393. UTF-8 Validation |
代码实现 |
题解 |
| 395. Longest Substring with At Least K Repeating Characters |
代码实现 |
— |
| 396. Rotate Function |
代码实现 |
题解 |
| 397. Integer Replacement |
代码实现 |
— |
| 398. Random Pick Index |
代码实现 |
题解 |
| 404. Sum of Left Leaves |
代码实现 |
— |
| 406. Queue Reconstruction by Height |
代码实现 |
— |
| 415. Add Strings |
代码实现 |
—- |
| 416. Partition Equal Subset Sum |
代码实现 |
—- |
| 417. Pacific Atlantic Water Flow |
代码实现 |
题解，视频 |
| 419. Battleships in a Board |
代码实现 |
—- |
| 420. Strong Password Checker |
代码实现 |
题解，视频 |
| 427. Construct Quad Tree |
代码实现 |
题解，视频 |
| 429. N-ary Tree Level Order Traversal |
代码实现 |
|
| 432. All O one Data Structure |
代码实现 |
题解，视频 |
| 433. Minimum Genetic Mutation |
代码实现 |
题解 |
| 435. Non-overlapping Intervals |
代码实现 |
—- |
| 440. K-th Smallest in Lexicographical Order |
代码实现 |
题解，视频 |
| 429. N-ary Tree Level Order Traversal |
代码实现 |
|
| 436. Find Right Interval |
代码实现 |
题解 |
| 442. Find All Duplicates in an Array |
代码实现 |
—- |
| 444. Sequence Reconstruction |
代码实现 |
—- |
| 449. Serialize and Deserialize BST |
代码实现 |
—- |
| 450. Delete Node in a BST |
代码实现 |
题解, 视频 |
| 452. Minimum Number of Arrows to Burst Balloons |
代码实现 |
—- |
| 454. 4Sum II |
代码实现 |
—- |
| 455. Assign Cookies |
代码实现 |
—- |
| 458. Poor Pigs |
代码实现 |
—- |
| 459. Repeated Substring Pattern |
代码实现 |
—- |
| 461. Hamming Distance |
代码实现 |
—- |
| 462. Minimum Moves to Equal Array Elements II |
代码实现 |
题解, 视频 |
| 464. Can I Win |
代码实现 |
题解 |
| 467. Unique Substrings in Wraparound String |
代码实现 |
题解 |
| 468. Validate IP Address |
代码实现 |
—- |
| 473. Matchsticks to Square |
代码实现 |
题解, 视频 |
| 474. Ones and Zeroes |
代码实现 |
—- |
| 475. Heaters |
代码实现 |
题解 |
| 478. Generate Random Point in a Circle |
代码实现 |
—- |
| 479. Largest Palindrome Product |
代码实现 |
题解, 视频 |
| 481. Magical String |
代码实现 |
视频 |
| 491. Increasing Subsequences |
代码实现 |
— |
| 494. Target Sum |
代码实现 |
—- |
| 496. Next Greater Element I |
代码实现 |
—- |
| 497. Random Point in Non-overlapping Rectangles |
代码实现 |
— |
| 498. Diagonal Traverse |
代码实现 |
— |
| 501. Find Mode in Binary Search Tree |
代码实现 |
—- |
| 503. Next Greater Element II |
代码实现 |
—- |
| 504. Base 7 |
代码实现 |
题解 |
| 506. Relative Ranks |
代码实现 |
—- |
| 507. Perfect Number |
代码实现 |
—- |
| 508. Most Frequent Subtree Sum |
代码实现 |
—- |
| 509. Fibonacci Number |
代码实现 |
—- |
| 513. Find Bottom Left Tree Value |
代码实现 |
—- |
| 515. Find Largest Value in Each Tree Row |
代码实现 |
—- |
| 516. Longest Palindromic Subsequence |
代码实现 |
—- |
| 518. Coin Change 2 |
代码实现 |
—- |
| 521. Longest Uncommon Subsequence I |
代码实现 |
题解 |
| 522. Longest Uncommon Subsequence II |
代码实现 |
—- |
| 524. Longest Word in Dictionary through Deleting |
代码实现 |
题解 |
| 530. Minimum Absolute Difference in BST |
代码实现 |
—- |
| 532. K-diff Pairs in an Array |
代码实现 |
题解 |
| 535. Encode and Decode TinyURL |
代码实现 |
—- |
| 537. Complex Number Multiplication |
代码实现 |
题解 |
| 538. Convert BST to Greater Tree |
代码实现 |
—- |
| 539. Minimum Time Difference |
代码实现 |
题解 |
| 540. Single Element in a Sorted Array |
代码实现 |
题解 |
| 541. Reverse String II |
代码实现 |
— |
| 553. Optimal Division |
代码实现 |
题解，视频 |
| 556. Next Greater Element III |
代码实现 |
— |
| 558. Logical OR of Two Binary Grids Represented as Quad-Trees |
代码实现 |
题解，视频 |
| 559. Maximum Depth of N-ary Tree |
代码实现 |
— |
| 563. Binary Tree Tilt |
代码实现 |
— |
| 564. Find the Closest Palindrome |
代码实现 |
题解，视频 |
| 565. Array Nesting |
代码实现 |
— |
| 572. Subtree of Another Tree |
代码实现 |
— |
| 583. Delete Operation for Two Strings |
代码实现 |
— |
| 587. Erect the Fence |
代码实现 |
题解 |
| 589. N-ary Tree Preorder Traversal |
代码实现 |
题解 |
| 590. N-ary Tree Postorder Traversal |
代码实现 |
题解 |
| 591. Tag Validator |
代码实现 |
题解, 视频 |
| 592. Fraction Addition and Subtraction |
代码实现 |
— |
| 593. Valid Square |
代码实现 |
— |
| 599. Minimum Index Sum of Two Lists |
代码实现 |
题解 |
| 606. Construct String from Binary Tree |
代码实现 |
|
| 617. Merge Two Binary Trees |
代码实现 |
— |
| 622. Design Circular Queue |
代码实现 |
— |
| 623. Add One Row to Tree |
代码实现 |
— |
| 636. Exclusive Time of Functions |
代码实现 |
— |
| 640. Solve the Equation |
代码实现 |
— |
| 641. Design Circular Deque |
代码实现 |
— |
| 646. Maximum Length of Pair Chain |
代码实现 |
— |
| 647. Palindromic Substrings |
代码实现 |
— |
| 648. Replace Words |
代码实现 |
— |
| 652. Find Duplicate Subtrees |
代码实现 |
视频 |
| 653. Two Sum IV - Input is a BST |
代码实现 |
|
| 654. Maximum Binary Tree |
代码实现 |
— |
| 655. Print Binary Tree |
代码实现 |
— |
| 658. Find K Closest Elements |
代码实现 |
— |
| 661. Image Smoother |
代码实现 |
题解 |
| 662. Maximum Width of Binary Tree |
代码实现 |
视频 |
| 667. Beautiful Arrangement II |
代码实现 |
— |
| 668. Kth Smallest Number in Multiplication Table |
代码实现 |
题解，视频 |
| 669. Trim a Binary Search Tree |
代码实现 |
— |
| 670. Maximum Swap |
代码实现 |
— |
| 672. Bulb Switcher II |
代码实现 |
— |
| 674. Longest Continuous Increasing Subsequence |
代码实现 |
— |
| 675. Cut Off Trees for Golf Event |
代码实现 |
题解 |
| 676. Implement Magic Dictionary |
代码实现 |
题解, 视频 |
| 682. Baseball Game |
代码实现 |
题解 |
| 687. Longest Univalue Path |
代码实现 |
— |
| 688. Knight Probability in Chessboard |
代码实现 |
题解，视频 |
| 689. Maximum Sum of 3 Non-Overlapping Subarrays |
代码实现 |
题解 |
| 691. Stickers to Spell Word |
代码实现 |
题解，视频 |
| 692. Top K Frequent Words |
代码实现 |
— |
| 693. Binary Number with Alternating Bits |
代码实现 |
— |
| 698. Partition to K Equal Sum Subsets |
代码实现 |
— |
| 699. Falling Squares |
代码实现 |
题解，视频 |
| 700. Search in a Binary Search Tree |
代码实现 |
— |
| 701. Insert into a Binary Search Tree |
代码实现 |
— |
| 704. Binary Search |
代码实现 |
— |
| 707. Design Linked List |
代码实现 |
— |
| 708. Insert into a Cyclic Sorted List |
代码实现 |
题解, 视频 |
| 709. To Lower Case |
代码实现 |
— |
| 710. Random Pick with Blacklist |
代码实现 |
— |
| 713. Subarray Product Less Than K |
代码实现 |
题解，视频 |
| 714. Best Time to Buy and Sell Stock with Transaction Fee |
代码实现 |
— |
| 715. Range Module |
代码实现 |
题解，视频 |
| 717. 1-bit and 2-bit Characters |
代码实现 |
题解 |
| 718. Maximum Length of Repeated Subarray |
代码实现 |
— |
| 719. Find K-th Smallest Pair Distance |
代码实现 |
题解 |
| 720. Longest Word in Dictionary |
代码实现 |
题解，视频 |
| 728. Self Dividing Numbers |
代码实现 |
— |
| 729. My Calendar I |
代码实现 |
— |
| 730. Count Different Palindromic Subsequences |
代码实现 |
— |
| 731. My Calendar II |
代码实现 |
题解，视频 |
| 732. My Calendar III |
代码实现 |
题解，视频 |
| 735. Asteroid Collision |
代码实现 |
— |
| 736. Parse Lisp Expression |
代码实现 |
题解，视频 |
| 738. Monotone Increasing Digits |
代码实现 |
— |
| 739. Daily Temperatures |
代码实现 |
— |
| 741. Cherry Pickup |
代码实现 |
— |
| 745. Prefix and Suffix Search |
代码实现 |
题解，视频 |
| 746. Min Cost Climbing Stairs |
代码实现 |
— |
| 747. Largest Number At Least Twice of Others |
代码实现 |
题解 |
| 748. Shortest Completing Word |
代码实现 |
— |
| 749. Contain Virus |
代码实现 |
— |
| 753. Cracking the Safe |
代码实现 |
— |
| 754. Reach a Number |
代码实现 |
视频 |
| 757. Set Intersection Size At Least Two |
代码实现 |
题解，视频 |
| 761. Special Binary String |
代码实现 |
题解，视频 |
| 763. Partition Labels |
代码实现 |
— |
| 764. Largest Plus Sign |
代码实现 |
— |
| 768. Max Chunks To Make Sorted II |
代码实现 |
— |
| 769. Max Chunks To Make Sorted |
代码实现 |
— |
| 775. Global and Local Inversions |
代码实现 |
— |
| 779. K-th Symbol in Grammar |
代码实现 |
— |
| 780. Reaching Points |
代码实现 |
题解 |
| 782. Transform to Chessboard |
代码实现 |
题解, 视频 |
| 784. Letter Case Permutation |
代码实现 |
— |
| 786. K-th Smallest Prime Fraction |
代码实现 |
— |
| 790. Domino and Tromino Tiling |
代码实现 |
—— |
| 791. Custom Sort String |
代码实现 |
—— |
| 792. Number of Matching Subsequences |
代码实现 |
— |
| 793. Preimage Size of Factorial Zeroes Function |
代码实现 |
— |
| 794. Valid Tic-Tac-Toe State |
代码实现 |
题解 |
| 795. Number of Subarrays with Bounded Maximum |
代码实现 |
— |
| 798. Smallest Rotation with Highest Score |
代码实现 |
题解，视频 |
| 799. Champagne Tower |
代码实现 |
视频 |
| 801. Minimum Swaps To Make Sequences Increasing |
代码实现 |
视频 |
| 804. Unique Morse Code Words |
代码实现 |
题解 |
| 805. Split Array With Same Average |
代码实现 |
视频 |
| 806. Number of Lines To Write String |
代码实现 |
— |
| 807. Max Increase to Keep City Skyline |
代码实现 |
— |
| 808. Soup Servings |
代码实现 |
题解 |
| 809. Expressive Words |
代码实现 |
—— |
| 811. Subdomain Visit Count |
代码实现 |
— |
| 812. Largest Triangle Area |
代码实现 |
题解, 视频 |
| 813. Largest Sum of Averages |
代码实现 |
— |
| 814. Binary Tree Pruning |
代码实现 |
— |
| 816. Ambiguous Coordinates |
代码实现 |
视频 |
| 817. Linked List Components |
代码实现 |
— |
| 819. Most Common Word |
代码实现 |
题解 |
| 821. Shortest Distance to a Character |
代码实现 |
题解 |
| 827. Making A Large Island |
代码实现 |
— |
| 828. Count Unique Characters of All Substrings of a Given String |
代码实现 |
题解 |
| 829. Consecutive Numbers Sum |
代码实现 |
题解，视频 |
| 838. Push Dominoes |
代码实现 |
题解，视频 |
| 846. Hand of Straights |
代码实现 |
— |
| 850. Rectangle Area II |
代码实现 |
— |
| 854. K-Similar Strings |
代码实现 |
— |
| 855. Exam Room |
代码实现 |
— |
| 856. Score of Parentheses |
代码实现 |
视频 |
| 857. Minimum Cost to Hire K Workers |
代码实现 |
— |
| 860. Lemonade Change |
代码实现 |
— |
| 862. Shortest Subarray with Sum at Least K |
代码实现 |
— |
| 864. Shortest Path to Get All Keys |
代码实现 |
视频 |
| 868. Binary Gap |
代码实现 |
题解 |
| 870. Advantage Shuffle |
代码实现 |
视频 |
| 871. Minimum Number of Refueling Stops |
代码实现 |
— |
| 873. Length of Longest Fibonacci Subsequence |
代码实现 |
— |
| 875. Koko Eating Bananas |
代码实现 |
— |
| 878. Nth Magical Number |
代码实现 |
— |
| 882. Reachable Nodes In Subdivided Graph |
代码实现 |
题解，视频 |
| 883. Projection Area of 3D Shapes |
代码实现 |
题解 |
| 884. Uncommon Words from Two Sentences |
代码实现 |
题解 |
| 886. Possible Bipartition |
代码实现 |
— |
| 890. Find and Replace Pattern |
代码实现 |
– |
| 891. Sum of Subsequence Widths |
代码实现 |
— |
| 895. Maximum Frequency Stack |
代码实现 |
— |
| 899. Orderly Queue |
代码实现 |
— |
| 901. Online Stock Span |
代码实现 |
— |
| 902. Numbers At Most N Given Digit Set |
代码实现 |
— |
| 904. Fruit Into Baskets |
代码实现 |
视频 |
| 905. Sort Array By Parity |
代码实现 |
题解 |
| 907. Sum of Subarray Minimums |
代码实现 |
视频 |
| 908. Smallest Range I |
代码实现 |
— |
| 911. Online Election |
代码实现 |
— |
| 913. Cat and Mouse |
代码实现 |
— |
| 915. Partition Array into Disjoint Intervals |
代码实现 |
— |
| 917. Reverse Only Letters |
代码实现 |
题解 |
| 919. Complete Binary Tree Inserter |
代码实现 |
— |
| 926. Flip String to Monotone Increasing |
代码实现 |
题解 |
| 927. Three Equal Parts |
代码实现 |
视频 |
| 929. Unique Email Addresses |
代码实现 |
— |
| 933. Number of Recent Calls |
代码实现 |
题解 |
| 934. Shortest Bridge |
代码实现 |
— |
| 937. Reorder Data in Log Files |
代码实现 |
题解 |
| 940. Distinct Subsequences II |
代码实现 |
— |
| 942. DI String Match |
代码实现 |
题解 |
| 946. Validate Stack Sequences |
代码实现 |
— |
| 952. Largest Component Size by Common Factor |
代码实现 |
— |
| 953. Verifying an Alien Dictionary |
代码实现 |
— |
| 954. Array of Doubled Pairs |
代码实现 |
题解, 视频 |
| 961. N-Repeated Element in Size 2N Array |
代码实现 |
题解, 视频 |
| 965. Univalued Binary Tree |
代码实现 |
— |
| 968. Binary Tree Cameras |
代码实现 |
— |
| 969. Pancake Sorting |
代码实现 |
题解 |
| 977. Squares of a Sorted Array |
代码实现 |
— |
| 997. Find the Town Judge |
代码实现 |
题解 |
| 998. Maximum Binary Tree II |
代码实现 |
— |
| 1001. Grid Illumination |
代码实现 |
题解，视频 |
| 1005. Maximize Sum Of Array After K Negations |
代码实现 |
—— |
| 1020. Number of Enclaves |
代码实现 |
题解 |
| 1021. Remove Outermost Parentheses |
代码实现 |
题解 |
| 1022. Sum of Root To Leaf Binary Numbers |
代码实现 |
题解 |
| 1034. Coloring A Border |
代码实现 |
—— |
| 1035. Uncrossed Lines |
代码实现 |
—— |
| 1036. Escape a Large Maze |
代码实现 |
—– |
| 1037. Valid Boomerang |
代码实现 |
题解 |
| 1047. Remove All Adjacent Duplicates In String |
代码实现 |
—— |
| 1049. Last Stone Weight II |
代码实现 |
—— |
| 1051. Height Checker |
代码实现 |
题解 |
| 1089. Duplicate Zeros |
代码实现 |
—— |
| 1106. Parsing A Boolean Expression |
代码实现 |
视频 |
| 1143. Longest Common Subsequence |
代码实现 |
—— |
| 1154. Day of the Year |
代码实现 |
题解 |
| 1161. Maximum Level Sum of a Binary Tree |
代码实现 |
—— |
| 1175. Prime Arrangements |
代码实现 |
—— |
| 1184. Distance Between Bus Stops |
代码实现 |
—— |
| 1185. Day of the Week |
代码实现 |
—— |
| 1189. Maximum Number of Balloons |
代码实现 |
题解 |
| 1200. Minimum Absolute Difference |
代码实现 |
—— |
| 1206. Design Skiplist |
代码实现 |
—— |
| 1217. Minimum Cost to Move Chips to The Same Position |
代码实现 |
—— |
| 1219. Path with Maximum Gold |
代码实现 |
题解 |
| 1220. Count Vowels Permutation |
代码实现 |
题解 |
| 1224. Maximum Equal Frequency |
代码实现 |
视频 |
| 1235. Maximum Profit in Job Scheduling |
代码实现 |
视频 |
| 1252. Cells with Odd Values in a Matrix |
代码实现 |
—— |
| 1260. Shift 2D Grid |
代码实现 |
—— |
| 1282. Group the People Given the Group Size They Belong To |
代码实现 |
—— |
| 1302. Deepest Leaves Sum |
代码实现 |
—– |
| 1305. All Elements in Two Binary Search Trees |
代码实现 |
—– |
| 1331. Rank Transform of an Array |
代码实现 |
—– |
| 1332. Remove Palindromic Subsequences |
代码实现 |
题解 |
| 1342. Number of Steps to Reduce a Number to Zero |
代码实现 |
题解 |
| 1345. Jump Game IV |
代码实现 |
题解 |
| 1356. Sort Integers by The Number of 1 Bits |
代码实现 |
—— |
| 1374. Generate a String With Characters That Have Odd Counts |
代码实现 |
—— |
| 1380. Lucky Numbers in a Matrix |
代码实现 |
题解 |
| 1403. Minimum Subsequence in Non-Increasing Order |
代码实现 |
—— |
| 1405. Longest Happy String |
代码实现 |
题解, 视频 |
| 1408. String Matching in an Array |
代码实现 |
—— |
| 1413. Minimum Value to Get Positive Step by Step Sum |
代码实现 |
—— |
| 1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K |
代码实现 |
题解 |
| 1417. Reformat The String |
代码实现 |
—— |
| 1422. Maximum Score After Splitting a String |
代码实现 |
—— |
| 1441. Build an Array With Stack Operations |
代码实现 |
—– |
| 1447. Simplified Fractions |
代码实现 |
|
| 1449. Form Largest Integer With Digits That Add up to Target |
代码实现 |
视频 |
| 1450. Number of Students Doing Homework at a Given Time |
代码实现 |
—— |
| 1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence |
代码实现 |
—— |
| 1460. Make Two Arrays Equal by Reversing Sub-arrays |
代码实现 |
—— |
| 1463. Cherry Pickup II |
代码实现 |
|
| 1464. Maximum Product of Two Elements in an Array |
代码实现 |
|
| 1470. Shuffle the Array |
代码实现 |
|
| 1475. Final Prices With a Special Discount in a Shop |
代码实现 |
视频 |
| 1518. Water Bottles |
代码实现 |
题解 |
| 1576. Replace All ?’s to Avoid Consecutive Repeating Characters |
代码实现 |
题解 |
| 1582. Special Positions in a Binary Matrix |
代码实现 |
|
| 1592. Rearrange Spaces Between Words |
代码实现 |
|
| 1598. Crawler Log Folder |
代码实现 |
|
| 1601. Maximum Number of Achievable Transfer Requests |
代码实现 |
题解，视频 |
| 1606. Find Servers That Handled Most Number of Requests |
代码实现 |
题解，视频 |
| 1608. Special Array With X Elements Greater Than or Equal X |
代码实现 |
|
| 1610. Maximum Number of Visible Points |
代码实现 |
—— |
| 1614. Maximum Nesting Depth of the Parentheses |
代码实现 |
—— |
| 1619. Mean of Array After Removing Some Elements |
代码实现 |
视频 |
| 1620. Coordinate With Maximum Network Quality |
代码实现 |
—— |
| 1624. Largest Substring Between Two Equal Characters |
代码实现 |
—— |
| 1629. Slowest Key |
代码实现 |
—— |
| 1632. Rank Transform of a Matrix |
代码实现 |
—— |
| 1636. Sort Array by Increasing Frequency |
代码实现 |
—— |
| 1640. Check Array Formation Through Concatenation |
代码实现 |
—— |
| 1656. Design an Ordered Stream |
代码实现 |
—— |
| 1658. Minimum Operations to Reduce X to Zero |
代码实现 |
视频 |
| 1662. Check If Two String Arrays are Equivalent |
代码实现 |
—— |
| 1663. Smallest String With A Given Numeric Value |
代码实现 |
—— |
| 1664. Ways to Make a Fair Array |
代码实现 |
视频 |
| 1668. Maximum Repeating Substring |
代码实现 |
视频 |
| 1672. Richest Customer Wealth |
代码实现 |
—— |
| 1684. Count the Number of Consistent Strings |
代码实现 |
|
| 1687. Delivering Boxes from Storage to Ports |
代码实现 |
—— |
| 1688. Count of Matches in Tournament |
代码实现 |
—— |
| 1691. Maximum Height by Stacking Cuboids |
代码实现 |
—— |
| 1697. Checking Existence of Edge Length Limited Paths |
代码实现 |
—— |
| 1700. Number of Students Unable to Eat Lunch |
代码实现 |
—— |
| 1703. Minimum Adjacent Swaps for K Consecutive Ones |
代码实现 |
|
| 1704. Determine if String Halves Are Alike |
代码实现 |
— |
| 1706. Where Will the Ball Fall |
代码实现 |
题解 |
| 1710. Maximum Units on a Truck |
代码实现 |
—— |
| 1716. Calculate Money in Leetcode Bank |
代码实现 |
题解 |
| 1719. Number Of Ways To Reconstruct A Tree |
代码实现 |
题解，视频 |
| 1723. Find Minimum Time to Finish All Jobs |
代码实现 |
题解 |
| 1725. Number Of Rectangles That Can Form The Largest Square |
代码实现 |
题解 |
| 1732. Find the Highest Altitude |
代码实现 |
|
| 1739. Building Boxes |
代码实现 |
|
| 1742. Maximum Number of Balls in a Box |
代码实现 |
|
| 1748. Sum of Unique Elements |
代码实现 |
题解 |
| 1750. Minimum Length of String After Deleting Similar Ends |
代码实现 |
|
| 1752. Check if Array Is Sorted and Rotated |
代码实现 |
|
| 1753. Maximum Score From Removing Stones |
代码实现 |
|
| 1754. Largest Merge Of Two Strings |
代码实现 |
题解, 视频 |
| 1758. Minimum Changes To Make Alternating Binary String |
代码实现 |
—— |
| 1759. Count Number of Homogenous Substrings |
代码实现 |
|
| 1760. Minimum Limit of Balls in a Bag |
代码实现 |
|
| 1763. Longest Nice Substring |
代码实现 |
题解, 视频 |
| 1764. Form Array by Concatenating Subarrays of Another Array |
代码实现 |
|
| 1765. Map of Highest Peak |
代码实现 |
题解 |
| 1768. Merge Strings Alternately |
代码实现 |
|
| 1769. Minimum Number of Operations to Move All Balls to Each Box |
代码实现 |
|
| 1773. Count Items Matching a Rule |
代码实现 |
|
| 1774. Closest Dessert Cost |
代码实现 |
|
| 1775. Equal Sum Arrays With Minimum Number of Operations |
代码实现 |
|
| 1779. Find Nearest Point That Has the Same X or Y Coordinate |
代码实现 |
|
| 1780. Check if Number is a Sum of Powers of Three |
代码实现 |
—— |
| 1781. Sum of Beauty of All Substrings |
代码实现 |
视频 |
| 1785. Minimum Elements to Add to Form a Given Sum |
代码实现 |
|
| 1790. Check if One String Swap Can Make Strings Equal |
代码实现 |
—— |
| 1791. Find Center of Star Graph |
代码实现 |
题解 |
| 1796. Second Largest Digit in a String |
代码实现 |
|
| 1799. Maximize Score After N Operations |
代码实现 |
题解, 视频 |
| 1800. Maximum Ascending Subarray Sum |
代码实现 |
—— |
| 1801. Number of Orders in the Backlog |
代码实现 |
—— |
| 1802. Maximum Value at a Given Index in a Bounded Array |
代码实现 |
视频 |
| 1803. Count Pairs With XOR in a Range |
代码实现 |
—— |
| 1805. Number of Different Integers in a String |
代码实现 |
—— |
| 1806. Minimum Number of Operations to Reinitialize a Permutation |
代码实现 |
—— |
| 1807. Evaluate the Bracket Pairs of a String |
代码实现 |
—— |
| 1812. Determine Color of a Chessboard Square |
代码实现 |
—— |
| 1813. Sentence Similarity III |
代码实现 |
—— |
| 1814. Count Nice Pairs in an Array |
代码实现 |
—— |
| 1815. Maximum Number of Groups Getting Fresh Donuts |
代码实现 |
—— |
| 1816. Truncate Sentence |
代码实现 |
—— |
| 1817. Finding the Users Active Minutes |
代码实现 |
—— |
| 1819. Number of Different Subsequences GCDs |
代码实现 |
—— |
| 1822. Sign of the Product of an Array |
代码实现 |
—— |
| 1823. Find the Winner of the Circular Game |
代码实现 |
题解, 视频 |
| 1824. Minimum Sideway Jumps |
代码实现 |
—— |
| 1825. Finding MK Average |
代码实现 |
—— |
| 1827. Minimum Operations to Make the Array Increasing |
代码实现 |
题解 |
| 1828. Queries on Number of Points Inside a Circle |
代码实现 |
—— |
| 1832. Check if the Sentence Is Pangram |
代码实现 |
—— |
| 1971. Find if Path Exists in Graph |
代码实现 |
—— |
| 1945. Sum of Digits of String After Convert |
代码实现 |
—— |
| 1984. Minimum Difference Between Highest and Lowest of K Scores |
代码实现 |
|
| 1994. The Number of Good Subsets |
代码实现 |
题解, 视频 |
| 1996. The Number of Weak Characters in the Game |
代码实现 |
题解, 视频 |
| 2000. Reverse Prefix of Word |
代码实现 |
题解 |
| 2006. Count Number of Pairs With Absolute Difference K |
代码实现 |
|
| 2011. Final Value of Variable After Performing Operations |
代码实现 |
|
| 2013. Detect Squares |
代码实现 |
题解, 视频 |
| 2016. Maximum Difference Between Increasing Elements |
代码实现 |
题解 |
| 2022. Convert 1D Array Into 2D Array |
代码实现 |
—— |
| 2024. Maximize the Confusion of an Exam |
代码实现 |
题解，视频 |
| 2027. Minimum Moves to Convert String |
代码实现 |
—— |
| 2028. Find Missing Observations |
代码实现 |
题解 |
| 2029. Stone Game IX |
代码实现 |
题解, 视频 |
| 2032. Two Out of Three |
代码实现 |
—— |
| 2034. Stock Price Fluctuation |
代码实现 |
—— |
| 2037. Minimum Number of Moves to Seat Everyone |
代码实现 |
—— |
| 2038. Remove Colored Pieces if Both Neighbors are the Same Color |
代码实现 |
题解 |
| 2039. The Time When the Network Becomes Idle |
代码实现 |
题解，视频 |
| 2042. Check if Numbers Are Ascending in a Sentence |
代码实现 |
—— |
| 2044. Count Number of Maximum Bitwise-OR Subsets |
代码实现 |
题解，视频 |
| 2045. Second Minimum Time to Reach Destination |
代码实现 |
题解 |
| 2047. Number of Valid Words in a Sentence |
代码实现 |
—— |
| 2049. Count Nodes With the Highest Score |
代码实现 |
题解 |
| 2055. Plates Between Candles |
代码实现 |
题解，视频 |
| 2062. Count Vowel Substrings of a String |
代码实现 |
—— |
| 2063. Vowels of All Substrings |
代码实现 |
—— |
| 2100. Find Good Days to Rob the Bank |
代码实现 |
题解，视频 |
| 2104. Sum of Subarray Ranges |
代码实现 |
题解，视频 |
| 2180. Count Integers With Even Digit Sum |
代码实现 |
—— |
| 2185. Counting Words With a Given Prefix |
代码实现 |
—— |
| 2283. Check if Number Has Equal Digit Count and Digit Value |
代码实现 |
—– |
| 2287. Rearrange Characters to Make Target String |
代码实现 |
—– |
| 2293. Min Max Game |
代码实现 |
—– |
| 2299. Strong Password Checker II |
代码实现 |
—– |
| 2303. Calculate Amount Paid in Taxes |
代码实现 |
—— |
| 2309. Greatest English Letter in Upper and Lower Case |
代码实现 |
—– |
| 2315. Count Asterisks |
代码实现 |
—– |
| 2351. First Letter to Appear Twice |
代码实现 |
—— |
| 5194. Minimum Moves to Reach Target Score |
代码实现 |
题解 |
| 5259. Calculate Amount Paid in Taxes |
代码实现 |
—– |
| 5270. Minimum Path Cost in a Grid |
代码实现 |
—– |
| 5289. Fair Distribution of Cookies |
代码实现 |
视频 |
| 5976. Check if Every Row and Column Contains All Numbers |
代码实现 |
题解 |
| 5977. Minimum Swaps to Group All 1’s Together II |
代码实现 |
—– |
| 5982. Solving Questions With Brainpower |
代码实现 |
题解 |
| 5992. Maximum Good People Based on Statements |
代码实现 |
题解, 视频 |
| 6003. Minimum Time to Remove All Cars Containing Illegal Goods |
代码实现 |
题解, 视频 |
| 6094. Naming a Company |
代码实现 |
视频 |
| 6296. Alternating Digit Sum |
代码实现 |
视频 |
| 6297. Sort the Students by Their Kth Score |
代码实现 |
视频 |
| 6298. Apply Bitwise Operations to Make Strings Equal |
代码实现 |
视频 |
| 6299. Minimum Cost to Split an Array |
代码实现 |
视频 |
