LinkedIn TAG

1	[leetcode]243. Shortest Word Distance最短单词距离	Two Pointers
2	[leetcode]244. Shortest Word Distance II最短单词距离(允许连环call)	HashMap+Merge Sort
3	[leetcode]245. Shortest Word Distance III最短单词距离(word1可能等于word2)	Two Pointers
4	[leetcode]15. 3Sum三数之和	Two Pointers(left&right)
5	[leetcode]611. Valid Triangle Number有效三角数	Two Pointers(left&right)
6	[leetcode]76. Minimum Window Substring最小字符串窗口	Two Pointers(Sliding Window)
7	[leetcode]3. Longest Substring Without Repeating Characters无重复字母的最长子串	Two Pointers(Sliding Window)
8	[leetcode]349. Intersection of Two Arrays数组交集	HashSet
9	[leetcode]1. Two Sum两数之和	HashMap
10	[leetcode]170. Two Sum III - Data structure design两数之和III - 数据结构设计	HashMap
11	[leetcode]149. Max Points on a Line多点共线	HashMap
12	[leetcode]205. Isomorphic Strings 同构字符串	HashMap
13	[leetcode]706. Design HashMap设计HashMap	HashMap
14	[leetcode]748. Shortest Completing Word能覆盖车牌最短单词	HashMap
15	[leetcode]535. Encode and Decode TinyURL短网址的编解码器	HashMap
16	[leetcode]380. Insert Delete GetRandom O(1)常数时间插入删除取随机值	HashMap+ArrayList
17	[leetcode]381. Insert Delete GetRandom O(1) - Duplicates allowed常数时间插入删除取随机值(有重)	HashMap+ArrayList
18	[leetcode]146. LRU CacheLRU缓存	HashMap+Doubly LinkedList
19	[leetcode]432. All O`one Data Structure 全O(1)数据结构	HashMap+Doubly LinkedList
20	[leetcode]460. LFU Cache最低频率缓存	HashMap+Doubly LinkedList
21	[leetcode]256. Paint House粉刷房子(三色可选)	DP(Array)
22	[leetcode]265. Paint House II粉刷房子(K色可选)	DP(Array)
23	[leetcode]198. House Robber小偷	DP(Array)
24	[leetcode]53. Maximum Subarray最大子数组和	DP(Array)
25	[leetcode]152. Maximum Product Subarray最大乘积子数组	DP(Array)
26	[leetcode]300. Longest Increasing Subsequence最长递增子序列	DP(Array)
27	[leetcode]416. Partition Equal Subset Sum分割数组的和相同子集	DP(Array)-2D
28	[leetcode]879. Profitable Schemes盈利计划	DP(Array)-3D
29	[leetcode]322. Coin Change找零钱	DP(Array)-2D
30	[leetcode]70. Climbing Stairs爬楼梯	DP(Array)
31	[leetcode]5. Longest Palindromic Substring最长回文子串	DP(String)
32	[leetcode]516. Longest Palindromic Subsequence最长回文子序列	DP(String)
33	[leetcode]730. Count Different Palindromic Subsequences计数不同的回文子序列的个数	DP(String)
34	[leetcode]647. Palindromic Substrings 回文子串	DP(String)
35	[leetcode]72. Edit Distance 最少编辑步数	DP(String)
	[leetcode]297. Serialize and Deserialize Binary Tree 序列化与反序列化二叉树	Queue
	[leetcode]449. Serialize and Deserialize BST序列化反序列化BST(尽量紧凑)	Queue
	[leetcode]428. Serialize and Deserialize N-ary Tree序列化与反序列化N叉树	Queue
	[leetcode]341. Flatten Nested List Iterator展开嵌套列表的迭代器	Queue
	[leetcode]339. Nested List Weight Sum嵌套列表加权和	DFS/BFS
	[leetcode]364. Nested List Weight Sum II嵌套列表加权和II	DFS/BFS
	[leetcode]102. Binary Tree Level Order Traversal二叉树水平遍历	BFS
	[leetcode]103. Binary Tree Zigzag Level Order Traversal二叉树Z形遍历	BFS
	[leetcode]200. Number of Islands岛屿个数	DFS(Floodfill)
	[leetcode]695. Max Area of Island小岛最大面积	DFS(Floodfill)
	[leetcode]694. Number of Distinct Islands你究竟有几个异小岛？	DFS(Floodfill)
	[leetcode]112. Path Sum路径和(是否有路径)	DFS(Backtracking)
	[leetcode]113. Path Sum II路径和(返回路径)	DFS(Backtracking)
	[leetcode]46. Permutations全排列(给定序列无重复元素)	DFS(Backtracking)
	[leetcode]47. Permutations全排列(给定序列有重复元素)	DFS(Backtracking)
	[leetcode]79. Word Search找单词	DFS(Backtracking)
	[leetcode]254. Factor Combinations因式组合	DFS(Backtracking)
	[leetcode]78. Subsets数组子集	DFS(Backtracking)
	[leetcode]39. Combination Sum组合之和	DFS(Backtracking)
	[leetcode]40. Combination Sum II组合之和(每元素限用一次)	DFS(Backtracking)
	[leetcode]377. Combination Sum IV组合之和(允许相同元素不同顺序的组合结果)	DP(Array)
	[leetcode]282. Expression Add Operators 表达式添加运算符	DFS(树形问题)
	[leetcode]671. Second Minimum Node In a Binary Tree二叉树次小结点	DFS(树形问题)
	[leetcode]464. Can I Win我能获胜吗	DFS(树形问题)
	[leetcode]17. Letter Combinations of a Phone Number手机键盘的字母组合	DFS(树形问题)
	[leetcode]468. Validate IP Address验证有效IP地址	DFS(树形问题)
	[leetcode]156.Binary Tree Upside Down颠倒二叉树	DFS(Tree)
	[leetcode]366. Find Leaves of Binary Tree捡树叶	DFS(Tree)
	[leetcode]236. LCA of a Binary Tree二叉树最近公共祖先	DFS(Tree)
	[leetcode]235. LCA of a Binary Search Tree BST的最近公共祖先	DFS(Tree)
	[leetcode]100. Same Tree相同的树	DFS(Tree)
	[leetcode]101. Symmetric Tree对称树	DFS(Tree)
	[leetcode]104. Maximum Depth of Binary Tree二叉树最大深度	DFS(Tree)
	[leetcode]98. Validate Binary Search Tree验证二叉搜索树	DFS(Tree)
	[leetcode]270. Closest Binary Search Tree Value二叉搜索树中找target的最接近值	Tree
	[leetcode]272. Closest Binary Search Tree Value II二叉搜索树中最近的值II	Deque/LinkedList
	[leetcode]173. Binary Search Tree Iterator 二叉搜索树迭代器	Tree
	655 Print Binary Tree	Tree
	450 Delete Node in a BST	Tree
	701 Insert into a BST	Tree
	[leetcode]226. Invert Binary Tree翻转二叉树	Tree
	208 Implement Trie (Prefix Tree)	Tree
	515 Find Largest Value in Each Tree Row	Tree
	[leetcode]127. Word Ladder单词接龙	Queue
	[leetcode]126. Word Ladder II单词接龙II	DFS+BFS
	[leetcode]716. Max Stack 最大栈	Stack
	[leetcode]155. Min Stack最小栈	Stack
	[leetcode]150. Evaluate Reverse Polish Notation逆波兰表示法	Stack
	[leetcode]20. Valid Parentheses有效括号序列	Stack
	[leetcode]636. Exclusive Time of Functions函数独占时间	Stack
	[leetcode]946. Validate Stack Sequences用Stack验证序列	Stack
	[leetcode]215. Kth Largest Element in an Array 数组中第k大的元素	PriorityQueue
	[leetcode]23. Merge k Sorted Lists归并k个有序链表	PriorityQueue
	[leetcode]347. Top K Frequent Elements 最高频的K个元素	PriorityQueue
	[leetcode]692. Top K Frequent Words 最高频的K个单词	PriorityQueue
	[leetcode]451. Sort Characters By Frequency按频率将字母排序	PriorityQueue
	[leetcode]373. Find K Pairs with Smallest Sums找出和最小的前K对	PriorityQueue
	[leetcode]160. Intersection of Two Linked Lists两链表交点	LinkedList
	[leetcode]61. Rotate List旋转链表	LinkedList
	[leetcode]141. Linked List Cycle判断链表是否循环	LinkedList
	[leetcode]142. Linked List Cycle II找出循环链表的入口	LinkedList
	[leetcode]2. Add Two Numbers两数相加	LinkedList
	[leetcode]21. Merge Two Sorted Lists合并两个链表	LinkedList
	382.Linked List Random Node Medium	LinkedList
	138.Copy List with Random Pointer	LinkedList
	[leetcode]56. Merge Intervals归并区间	Sort(Interval)
	[leetcode]57. Insert Interval插入区间	Sort(Interval)
	352 Data Stream as Disjoint Intervals	Sort(Interval)
	715 Range Module	Sort(Interval)
	[leetcode]88. Merge Sorted Array归并有序数组	Sort(Merge)
	207 Course Schedule Medium	Sort(Topological)
	[leetcode]50. Pow(x, n)求幂	Sort(Binary Search)
	[leetcode]34.Find First and Last Position of Element in Sorted Array找区间	Sort(Binary Search)
	[leetcode]33. Search in Rotated Sorted Array旋转过有序数组里找目标值	Sort(Binary Search)
	[leetcode]153. Find Minimum in Rotated Sorted Array旋转过有序数组里找最小	Sort(Binary Search)
	[leetcode]744. Find Smallest Letter Greater Than Target大于Target的最小字母	Sort(Binary Search)
	[leetcode]69. Sqrt(x)开方	Sort(Binary Search)
	[leetcode]81. Search in Rotated Sorted Array II旋转过有序数组里找目标值II(有重)	Sort(Binary Search)
	[leetcode]528. Random Pick with Weight按权重挑选索引	Sort(Binary Search)
	[leetcode]367. Valid Perfect Square验证完全平方数	Sort(Binary Search)
	[leetcode]4. Median of Two Sorted Arrays俩有序数组的中位数	Sort(Binary Search)
	[leetcode]658. Find K Closest Elements绝对距离最近的K个元素	Sort(Binary Search)
	[leetcode]319. Bulb Switcher灯泡开关	Math
	[leetcode]7. Reverse Integer反转整数	Math
	[leetcode]412. Fizz Buzz报数	Math
	[leetcode]296. Best Meeting Point最佳见面地点	Math
	[leetcode]633. Sum of Square Numbers平方数之和	Math
	[leetcode]133. Clone Graph 克隆图	Graph
	[leetcode]261. Graph Valid Tree有效树形图	Union Find
	323 Number of Connected Components in an Undirected Graph Medium	Union Find
	547 Friend Circles Medium	Union Find
	[leetcode]384. Shuffle an Array洗牌	Array
	[leetcode]277. Find the Celebrity 找名人	Array
	[leetcode]311. Sparse Matrix Multiplication 稀疏矩阵相乘	Array
	[leetcode]238. Product of Array Except Self除了自身以外的数组元素乘积	Array
	[leetcode]31. Next Permutation下一个排列	Array
	[leetcode]128. Longest Consecutive Sequence最长连续序列	Array
	[leetcode]122. Best Time to Buy and Sell Stock II 最佳炒股时机之二	Array
	251 Flatten 2D Vector	Array
	[leetcode]65. Valid Number 有效数值	String
	[leetcode]68. Text Justification文字对齐	String
	[leetcode]12. Integer to Roman整数转罗马数字	String
	[leetcode]13. Roman to Integer罗马数字转整数	String
	[leetcode]273. Integer to English Words 整数转英文单词	String
	[leetcode]151. Reverse Words in a String翻转给定字符串中的单词	String
	[leetcode]8. String to Integer (atoi)字符串转整数	String
	796 Rotate String	String
	344 Reverse String	String
	[leetcode]605. Can Place Flowers能放花吗	Greedy