As a begining

Recording something about leetcode or other questions

also translating some awesome works.

Distributed System(English to Chinesse)

• chapter 1

leetcode

• 1. Two Sum

• 2.Add Two Numbers

• 3. Longest Substring Without Repeating Characters

• 4. Median of Two Sorted Arrays

• 5. Longest Palindromic Substring

• 10. Regular Expression Matching

• 11. Container With Most Water

• 15. 3Sum

• 17. Letter Combinations of a Phone Number

• 19. Remove Nth Node From End of List

• 20. Valid Parentheses

• 21. Merge Two Sorted Lists

• 22. Generate Parentheses

• 23. Merge k Sorted Lists

• 31. Next Permutation

• 32. Longest Valid Parentheses

• 33. Search in Rotated Sorted Array

• 34. Find First and Last Position of Element in Sorted Array

• 39. Combination Sum

• 41.First Missing Positive

• 42. Trapping Rain Water

• 46. Permutations

• 47. Permutations II

• 48. Rotate Image

• 49. Group Anagrams

• 53. Maximum Subarray

• 55. Jump Game

• 56. Merge Intervals

• 61. Rotate List

• 62. Unique Paths

• 64. Minimum Path Sum

• 70. Climbing Stairs

• 72. Edit Distance

• 75. Sort Colors

• 76. Minimum Window Substring

• 78. Subsets

• 79. Word Search

• 89. Gray Code

• 94. Binary Tree Inorder Traversal

• 96. Unique Binary Search Trees

• 98. Validate Binary Search Tree

• 101. Symmetric Tree

• 102. Binary Tree Level Order Traversal

• 104. Maximum Depth of Binary Tree

• 105. Construct Binary Tree from Preorder and Inorder Traversal

• 121. Best Time to Buy and Sell Stock

• 124. Binary Tree Maximum Path Sum

• 128. Longest Consecutive Sequence

• 136. Single Number

• 139. Word Break

• 141. Linked List Cycle

• 142. Linked List Cycle II

• 146. LRU Cache

• 148. Sort List

• 152. Maximum Product Subarray

• 160. Intersection of Two Linked Lists

• 169. Majority Element

• 198. House Robber

• 200. Number of Islands

• 206. Reverse Linked List

• 207. Course Schedule

• 208. Implement Trie (Prefix Tree)

• 209. Minimum Size Subarray Sum

• 215. Kth Largest Element in an Array

• 221. Maximal Square

• 226. Invert Binary Tree

• 234. Palindrome Linked List

• 236. Lowest Common Ancestor of a Binary Tree

• 238. Product of Array Except Self

• 239. Sliding Window Maximum

• 240. Search a 2D Matrix II

• 279. Perfect Squares

• 283. Move Zeroes

• 287. Find the Duplicate Number

• 297. Serialize and Deserialize Binary Tree

• 300. Longest Increasing Subsequence

• 322. Coin Change

• 347. Top K Frequent Elements

• 394. Decode String

• 416. Partition Equal Subset Sum

• 437. Path Sum III

• 494. Target Sum

• 560. Subarray Sum Equals K

• 572. Subtree of Another Tree

• 581. Shortest Unsorted Continuous Subarray

• 621. Task Scheduler

• 771. Jewels and Stones

• 889. Construct Binary Tree from Preorder and Postorder Traversal

contest 124

first time participated in the leetcode contest.

struggled with the 996 for about an hour, just by forgetting to consider 0 * 0 = 0;

end up 718/4714.

• 993. Cousins in Binary Tree

• 994. Rotting Oranges

• 995. Minimum Number of K Consecutive Bit Flips

• 996. Number of Squareful Arrays