674-最长连续递增序列(Longest Continuous Increasing Subsequence) 原文链接: https://leetcode-cn.com/problems/longest-continuous-increasing-subsequence 英文原文Given an unsorted array of intege 2021-12-03 数组 简单
676-实现一个魔法字典(Implement Magic Dictionary) 原文链接: https://leetcode-cn.com/problems/implement-magic-dictionary 英文原文Design a data structure that is initialized with 2021-12-03 哈希表字典树字符串设计 中等
677-键值映射(Map Sum Pairs) 原文链接: https://leetcode-cn.com/problems/map-sum-pairs 英文原文Design a map that allows you to do the following: Maps 2021-12-03 哈希表字典树字符串设计 中等
678-有效的括号字符串(Valid Parenthesis String) 原文链接: https://leetcode-cn.com/problems/valid-parenthesis-string 英文原文Given a string s containing only three types of ch 2021-12-03 动态规划字符串栈贪心 中等
679-24 点游戏(24 Game) 原文链接: https://leetcode-cn.com/problems/24-game 英文原文You are given an integer array cards of length 4. You have four car 2021-12-03 回溯数学数组 困难
680-验证回文字符串 Ⅱ(Valid Palindrome II) 原文链接: https://leetcode-cn.com/problems/valid-palindrome-ii 英文原文Given a string s, return true if the s can be palindrom 2021-12-03 双指针字符串贪心 简单
684-冗余连接(Redundant Connection) 原文链接: https://leetcode-cn.com/problems/redundant-connection 英文原文In this problem, a tree is an undirected graph that is 2021-12-03 图并查集广度优先搜索深度优先搜索 中等
685-冗余连接 II(Redundant Connection II) 原文链接: https://leetcode-cn.com/problems/redundant-connection-ii 英文原文In this problem, a rooted tree is a directed graph 2021-12-03 图并查集广度优先搜索深度优先搜索 困难
686-重复叠加字符串匹配(Repeated String Match) 原文链接: https://leetcode-cn.com/problems/repeated-string-match 英文原文Given two strings a and b, return the minimum nu 2021-12-03 字符串字符串匹配 中等
687-最长同值路径(Longest Univalue Path) 原文链接: https://leetcode-cn.com/problems/longest-univalue-path 英文原文Given the root of a binary tree, return the length of 2021-12-03 二叉树树深度优先搜索 中等