997. Find the Town Judge-找到小镇的法官
In a town, there are N people labelled from 1 to N. Th... » 阅读全文
993. Cousins in Binary Tree-二叉树的堂兄弟节点
In a binary tree, the root node is at depth 0, and chil... » 阅读全文
989. Add to Array-Form of Integer-数组形式的整数加法
For a non-negative integer X, the array-form of X is an... » 阅读全文
976. Largest Perimeter Triangle-三角形的最大周长
Given an array A of positive lengths, return the larges... » 阅读全文
977. Squares of a Sorted Array-有序数组的平方
Given an integer array nums sorted in non-decreasing or... » 阅读全文
965. Univalued Binary Tree-单值二叉树
A binary tree is univalued if every node in the tree ha... » 阅读全文
961. N-Repeated Element in Size 2N Array-重复 N 次的元素
In a array A of size 2N, there are N+1 unique elements,... » 阅读全文
953. Verifying an Alien Dictionary-验证外星语词典
In an alien language, surprisingly they also use englis... » 阅读全文
944. Delete Columns to Make Sorted-删列造序
You are given an array of n strings strs, all of the sa... » 阅读全文
942. DI String Match-增减字符串匹配
Given a string S that only contains "I" (incr... » 阅读全文