Description A peak element is an element that is greater than its neighb...

Description 实现除法(保留整数) Solution 被除数每次*2ans每次加1<<shift num

Description Given a binary tree rooted at root, the depth of each node i...

Description 给出两个单词（start和end）和一个字典，找出从start到end的最短转换序列，输出最短序列的长度。 变换规则如下...

Description Given a non-empty string s, you may delete at most one chara...

Description 给定一个字符串，表示CPU需要执行的任务。 这个字符串由大写字母A到Z构成，不同的字母代表不同的任务。完成任务不需要按照...

Description Given two strings s and t, determine if they are both one ed...

Description Given an array of integers and an integer k, you need to fin...

Description 两个string的二进制数相加 Solution 简洁写法