450-删除二叉搜索树中的节点(Delete Node in a BST) 原文链接: https://leetcode-cn.com/problems/delete-node-in-a-bst 英文原文Given a root node reference of a BST and a key, delete 2021-12-03 二叉搜索树二叉树树 中等
451-根据字符出现频率排序(Sort Characters By Frequency) 原文链接: https://leetcode-cn.com/problems/sort-characters-by-frequency 英文原文Given a string s, sort it in decreasing order 2021-12-03 哈希表堆(优先队列)字符串排序桶排序计数 中等
453-最小操作次数使数组元素相等(Minimum Moves to Equal Array Elements) 原文链接: https://leetcode-cn.com/problems/minimum-moves-to-equal-array-elements 英文原文Given an integer array nums of size n 2021-12-03 数学数组 简单
454-四数相加 II(4Sum II) 原文链接: https://leetcode-cn.com/problems/4sum-ii 英文原文Given four integer arrays nums1, nums2, nums3, and nums4 all of len 2021-12-03 哈希表数组 中等
456-132 模式(132 Pattern) 原文链接: https://leetcode-cn.com/problems/132-pattern 英文原文Given an array of n integers nums, a 132 pattern is a subs 2021-12-03 二分查找单调栈数组有序集合栈 中等
455-分发饼干(Assign Cookies) 原文链接: https://leetcode-cn.com/problems/assign-cookies 英文原文Assume you are an awesome parent and want to give your child 2021-12-03 排序数组贪心 简单
457-环形数组是否存在循环(Circular Array Loop) 原文链接: https://leetcode-cn.com/problems/circular-array-loop 英文原文You are playing a game involving a circular array of no 2021-12-03 双指针哈希表数组 中等
458-可怜的小猪(Poor Pigs) 原文链接: https://leetcode-cn.com/problems/poor-pigs 英文原文There are buckets buckets of liquid, where exactly one of the buc 2021-12-03 动态规划数学组合数学 困难
459-重复的子字符串(Repeated Substring Pattern) 原文链接: https://leetcode-cn.com/problems/repeated-substring-pattern 英文原文Given a string s, check if it can be constructed 2021-12-03 字符串字符串匹配 简单
460-LFU 缓存(LFU Cache) 原文链接: https://leetcode-cn.com/problems/lfu-cache 英文原文Design and implement a data structure for a Least Frequently Used 2021-12-03 双向链表哈希表设计链表 困难