344. Reverse String-反转字符串
Write a function that reverses a string. The input stri... » 阅读全文
342. Power of Four-4的幂
Given an integer n, return true if it is a power of fou... » 阅读全文
326. Power of Three-3的幂
Given an integer n, return true if it is a power of thr... » 阅读全文
303. Range Sum Query – Immutable-区域和检索 – 数组不可变
Given an integer array nums, find the sum of the elemen... » 阅读全文
290. Word Pattern-单词规律
Given a pattern and a string s, find if s follows the s... » 阅读全文
283. Move Zeroes-移动零
Given an array nums, write a function to move all 0R... » 阅读全文
278. First Bad Version
You are a product manager and currently leading a team ... » 阅读全文
268. Missing Number-丢失的数字
Given an array nums containing n distinct numbers in th... » 阅读全文
263. Ugly Number-丑数
Write a program to check whether a given number is an u... » 阅读全文
258. Add Digits-各位相加
给定一个非负整数num，反复将各个位上的数字相加，直到结果为一位数。返回这个结果。 示例 1: 输入: num... » 阅读全文