632-最小区间(Smallest Range Covering Elements from K Lists) 原文链接: https://leetcode-cn.com/problems/smallest-range-covering-elements-from-k-lists 英文原文You have k lists of sorted in 2021-12-03 哈希表堆(优先队列)排序数组滑动窗口贪心 困难
633-平方数之和(Sum of Square Numbers) 原文链接: https://leetcode-cn.com/problems/sum-of-square-numbers 英文原文Given a non-negative integer c, decide whether there& 2021-12-03 二分查找双指针数学 中等
636-函数的独占时间(Exclusive Time of Functions) 原文链接: https://leetcode-cn.com/problems/exclusive-time-of-functions 英文原文On a single-threaded CPU, we execute a program 2021-12-03 数组栈 中等
638-大礼包(Shopping Offers) 原文链接: https://leetcode-cn.com/problems/shopping-offers 英文原文In LeetCode Store, there are n items to sell. Each item has 2021-12-03 位运算动态规划回溯数组状态压缩记忆化搜索 中等
639-解码方法 II(Decode Ways II) 原文链接: https://leetcode-cn.com/problems/decode-ways-ii 英文原文A message containing letters from A-Z can be encoded into nu 2021-12-03 动态规划字符串 困难
640-求解方程(Solve the Equation) 原文链接: https://leetcode-cn.com/problems/solve-the-equation 英文原文Solve a given equation and return the value of 'x 2021-12-03 字符串数学模拟 中等
643-子数组最大平均数 I(Maximum Average Subarray I) 原文链接: https://leetcode-cn.com/problems/maximum-average-subarray-i 英文原文You are given an integer array nums consisting o 2021-12-03 数组滑动窗口 简单
646-最长数对链(Maximum Length of Pair Chain) 原文链接: https://leetcode-cn.com/problems/maximum-length-of-pair-chain 英文原文You are given an array of n pairs pairs where 2021-12-03 动态规划排序数组贪心 中等
645-错误的集合(Set Mismatch) 原文链接: https://leetcode-cn.com/problems/set-mismatch 英文原文You have a set of integers s, which originally contains all th 2021-12-03 位运算哈希表排序数组 简单
647-回文子串(Palindromic Substrings) 原文链接: https://leetcode-cn.com/problems/palindromic-substrings 英文原文Given a string s, return the number of palindromic s 2021-12-03 动态规划字符串 中等