Problems

力扣题解

Problem	Solution	Supplementary
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	----
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	----
242. Valid Anagram	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	---
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	---
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	---
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	----
449. Serialize and Deserialize BST	代码实现	----
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
474. Ones and Zeroes	代码实现	----
475. Heaters	代码实现	题解
479. Largest Palindrome Product	代码实现	题解, 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	----
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	----
509. Fibonacci Number	代码实现	----
513. Find Bottom Left Tree Value	代码实现	----
516. Longest Palindromic Subsequence	代码实现	----
518. Coin Change 2	代码实现	----
521. 最长特殊序列 Ⅰ	代码实现	题解
524. Longest Word in Dictionary through Deleting	代码实现	题解
530. Minimum Absolute Difference in BST	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
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
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
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	---
647. Palindromic Substrings	代码实现	---
653. Two Sum IV - Input is a BST	代码实现
654. Maximum Binary Tree	代码实现	---
661. Image Smoother	代码实现	题解
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	---
674. Longest Continuous Increasing Subsequence	代码实现	---
682. Baseball Game	代码实现	题解
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
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	---
709. To Lower Case	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	---
717. 1-bit and 2-bit Characters	代码实现	题解
718. Maximum Length of Repeated Subarray	代码实现	---
720. Longest Word in Dictionary	代码实现	题解，视频
728. Self Dividing Numbers	代码实现	---
738. Monotone Increasing Digits	代码实现	---
739. Daily Temperatures	代码实现	---
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	---
763. Partition Labels	代码实现	---
780. Reaching Points	代码实现	题解
786. K-th Smallest Prime Fraction	代码实现	---
794. Valid Tic-Tac-Toe State	代码实现	题解
798. Smallest Rotation with Highest Score	代码实现	题解，视频
804. Unique Morse Code Words	代码实现	题解
806. Number of Lines To Write String	代码实现	---
807. Max Increase to Keep City Skyline	代码实现	---
812. Largest Triangle Area	代码实现	题解, 视频
819. Most Common Word	代码实现	题解
821. Shortest Distance to a Character	代码实现	题解
838. Push Dominoes	代码实现	题解，视频
846. Hand of Straights	代码实现	---
860. Lemonade Change	代码实现	---
868. Binary Gap	代码实现	题解
883. Projection Area of 3D Shapes	代码实现	题解
884. Uncommon Words from Two Sentences	代码实现	题解
905. Sort Array By Parity	代码实现	题解
908. Smallest Range I	代码实现	---
911. Online Election	代码实现	---
913. Cat and Mouse	代码实现	---
917. Reverse Only Letters	代码实现	题解
933. Number of Recent Calls	代码实现	题解
937. Reorder Data in Log Files	代码实现	题解
942. DI String Match	代码实现	题解
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
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
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
1034. Coloring A Border	代码实现	------
1035. Uncrossed Lines	代码实现	------
1036. Escape a Large Maze	代码实现	------
1047. Remove All Adjacent Duplicates In String	代码实现	------
1049. Last Stone Weight II	代码实现	------
1143. Longest Common Subsequence	代码实现	------
1154. Day of the Year	代码实现	题解
1185. Day of the Week	代码实现	------
1189. Maximum Number of Balloons	代码实现	题解
1219. Path with Maximum Gold	代码实现	题解
1220. Count Vowels Permutation	代码实现	题解
1305. All Elements in Two Binary Search Trees	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	------
1380. Lucky Numbers in a Matrix	代码实现	题解
1405. Longest Happy String	代码实现	题解, 视频
1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K	代码实现	题解
1447. Simplified Fractions	代码实现
1449. Form Largest Integer With Digits That Add up to Target	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
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
1610. Maximum Number of Visible Points	代码实现	------
1614. Maximum Nesting Depth of the Parentheses	代码实现	------
1629. Slowest Key	代码实现	------
1672. Richest Customer Wealth	代码实现	------
1688. Count of Matches in Tournament	代码实现	------
1706. Where Will the Ball Fall	代码实现	题解
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
1725. Number Of Rectangles That Can Form The Largest Square	代码实现	题解
1748. Sum of Unique Elements	代码实现	题解
1763. Longest Nice Substring	代码实现	题解, 视频
1765. Map of Highest Peak	代码实现	题解
1791. Find Center of Star Graph	代码实现	题解
1816. Truncate Sentence	代码实现	------
1823. Find the Winner of the Circular Game	代码实现	题解, 视频
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
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
2028. Find Missing Observations	代码实现	题解
2029. Stone Game IX	代码实现	题解, 视频
2034. Stock Price Fluctuation	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
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
5194. Minimum Moves to Reach Target Score	代码实现	题解
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

剑指 Offer

Problem	Solution	Supplementary
剑指 Offer 05. 替换空格	代码实现	------
剑指 Offer 58 - II. 左旋转字符串	代码实现	------

程序员面试金典

Problem	Solution	Supplementary
面试题 04.06. 后继者	代码实现	题解, 视频