503-下一个更大元素 II(Next Greater Element II) 原文链接: https://leetcode-cn.com/problems/next-greater-element-ii 英文原文Given a circular integer array nums (i.e., the next 2021-12-03 单调栈数组栈 中等
504-七进制数(Base 7) 原文链接: https://leetcode-cn.com/problems/base-7 英文原文Given an integer num, return a string of its base 7 representation. 2021-12-03 数学 简单
506-相对名次(Relative Ranks) 原文链接: https://leetcode-cn.com/problems/relative-ranks 英文原文You are given an integer array score of size n, where score[ 2021-12-03 堆(优先队列)排序数组 简单
507-完美数(Perfect Number) 原文链接: https://leetcode-cn.com/problems/perfect-number 英文原文A perfect number is a positive integer that is equal to the 2021-12-03 数学 简单
508-出现次数最多的子树元素和(Most Frequent Subtree Sum) 原文链接: https://leetcode-cn.com/problems/most-frequent-subtree-sum 英文原文Given the root of a binary tree, return the most 2021-12-03 二叉树哈希表树深度优先搜索 中等
513-找树左下角的值(Find Bottom Left Tree Value) 原文链接: https://leetcode-cn.com/problems/find-bottom-left-tree-value 英文原文Given the root of a binary tree, return the lef 2021-12-03 二叉树广度优先搜索树深度优先搜索 中等
514-自由之路(Freedom Trail) 原文链接: https://leetcode-cn.com/problems/freedom-trail 英文原文In the video game Fallout 4, the quest "Road to Freedom& 2021-12-03 动态规划字符串广度优先搜索深度优先搜索 困难
515-在每个树行中找最大值(Find Largest Value in Each Tree Row) 原文链接: https://leetcode-cn.com/problems/find-largest-value-in-each-tree-row 英文原文Given the root of a binary tree, return 2021-12-03 二叉树广度优先搜索树深度优先搜索 中等
516-最长回文子序列(Longest Palindromic Subsequence) 原文链接: https://leetcode-cn.com/problems/longest-palindromic-subsequence 英文原文Given a string s, find the longest palindro 2021-12-03 动态规划字符串 中等
517-超级洗衣机(Super Washing Machines) 原文链接: https://leetcode-cn.com/problems/super-washing-machines 英文原文You have n super washing machines on a line. Initial 2021-12-03 数组贪心 困难