LeetCode分类汇总（Java+Python）

LeetCode分类汇总（Java+Python）

题解在GitHub，欢迎star：https://github.com/louisgry/Algorithm

• 数据结构
  • stack
  • queue
  • linkedlist
  • binarytree
  • collection
• 算法思想
  • cursor
  • partition
  • pointers
  • window
  • dp
  • greedy
  • backtracking
  • math

数据结构

stack

• 栈
  • 20. Valid Parentheses
  • 144. Binary Tree Preorder Traversal
  • more
  • 150. Evaluate Reverse Polish Notation
  • 42. Trapping Rain Water

queue

• 队列
  • 347. Top K Frequent Elements
  • 102. Binary Tree Level Order Traversal
  • 279. Perfect Squares

linkedlist

• 链表
  • 206. Reverse Linked List
  • 203. Remove Linked List Elements
  • 24. Swap Nodes in Pairs
  • 237. Delete Node in a Linked List
  • 19. Remove Nth Node From End of List
  • more
  • 234. Palindrome Linked List

binarytree

• 二叉树
  • 104. Maximum Depth of Binary Tree
  • 111. Minimum Depth of Binary Tree
  • 226. Invert Binary Tree
  • 112. Path Sum
  • 257. Binary Tree Paths
  • 437. Path Sum III
  • 235. Lowest Common Ancestor of a Binary Search Tree
  • more
  • 100. Same Tree
  • 101. Symmetric Tree
  • 222. Count Complete Tree Nodes
  • 110. Balanced Binary Tree
  • 404. Sum of Left Leaves
  • 113. Path Sum II
  • 129. Sum Root to Leaf Numbers

collection

• 查找表
  • 349. Intersection of Two Arrays
  • 350. Intersection of Two Arrays II
  • 1. Two Sum
  • 454. 4Sum II
  • 447. Number of Boomerangs
  • 219. Contains Duplicate II
  • 220. Contain Duplicate III
  • more
  • 136. Single Number
  • 242. Valid Anagram
  • 202. Happy Number
  • 290. Word Pattern
  • 804. Unique Morse Code Words

算法思想

cursor

• 游标
  • 283. Move Zeroes
  • more
  • 27. Remove Element
  • 122. Best Time to Buy and Sell Stock II

partition

• Partition
  • 75. Sort Colors
  • 215. Kth Largest Element in an Array

pointers

• 双指针
  • 167. Two Sum II - Input array is sorted
  • 11. Container With Most Water
  • 125. Valid Palindrome
  • 345. Reverse Vowels of a String

window

• 滑动窗口
  • 209. Minimum Size Subarray Sum
  • 3. Longest Substring Without Repeating Characters
  • 438. Find All Anagrams in a String
  • 76. Minimum Window Substring
  • 567. Permutation in String
  • 424. Longest Repeating Character Replacement

dp

• 动态规划
  • 70. Climbing Stairs
  • 343. Integer Break
  • 198. House Robber
  • 279. Perfect Squares
  • 91. Decode Ways
  • 416. Partition Equal Subset Sum
  • 300. Longest Increasing Subsequence
  • 1143. Longest Common Subsequence

greedy

• 贪心
  • 455. Assign Cookies
  • 435. Non-overlapping Intervals

backtracking

• 回溯
  • 17. Letter Combinations of a Phone Number
  • 46. Permutations
  • 77. Combinations
  • 79. Word Search
  • 200. Number of Islands
  • 51. N Queens

math

• 数学
  • 136. Single Number
  • 9. Palindrome Number