[LC] 231. Power of Two
Given an integer, write a function to determine if it is a power of two.
Example 1:
Input: 1
Output: true
Explanation: 20 = 1
Example 2:
Input: 16
Output: true
Explanation: 24 = 16
Example 3:
Input: 218
Output: false
class Solution {
public boolean isPowerOfTwo(int n) {
return n > 0 && (n & (n - 1)) == 0;
}
}
[LC] 231. Power of Two的更多相关文章
- LN : leetcode 231 Power of Two
lc 231 Power of Two 231 Power of Two Given an integer, write a function to determine if it is a powe ...
- 231. Power of Two 342. Power of Four -- 判断是否为2、4的整数次幂
231. Power of Two Given an integer, write a function to determine if it is a power of two. class Sol ...
- [LeetCode] 231 Power of Two && 326 Power of Three && 342 Power of Four
这三道题目都是一个意思,就是判断一个数是否为2/3/4的幂,这几道题里面有通用的方法,也有各自的方法,我会分别讨论讨论. 原题地址:231 Power of Two:https://leetcode. ...
- LeetCode - 326, 342, 231 Power of Three, Four, and Two
1. 问题 231. Power of Two: 判断一个整数是否是2的n次方,其中n是非负整数 342. Power of Four: 判断一个整数是否是4的n次方,其中n是非负整数 326. Po ...
- Leetcode 232 Implement Queue using Stacks 和 231 Power of Two
1. 232 Implement Queue using Stacks 1.1 问题描写叙述 使用栈模拟实现队列.模拟实现例如以下操作: push(x). 将元素x放入队尾. pop(). 移除队首元 ...
- LeetCode 231 Power of Two
Problem: Given an integer, write a function to determine if it is a power of two. Summary: 判断一个数n是不是 ...
- python leetcode 日记--231. Power of Two
题目: Given an integer, write a function to determine if it is a power of two. class Solution(object): ...
- Leetcode 231 Power of Two 数论
同样是判断数是否是2的n次幂,同 Power of three class Solution { public: bool isPowerOfTwo(int n) { ) && ((( ...
- (easy)LeetCode 231.Power of Two
Given an integer, write a function to determine if it is a power of two. Credits:Special thanks to @ ...
随机推荐
- 3. laravel 5.5 多子域名 + dingo + jwt 简单环境搭建
环境介绍 laravel 5.5.* + php 7.2 + mysql 5.7.27 1. 创建 laravel 项目 (自行 配置一下域名 如果 不会 请参考laravel 的第一篇文章) com ...
- 吴裕雄--天生自然 PHP开发学习:函数
<?php function writeName() { echo "Kai Jim Refsnes"; } echo "My name is "; wr ...
- springboot的http监控接口启动器的配置
基于SpringBoot框架企业级应用系统开发全面实战()->03.07_http监控_recv.mp4 监控接口启动器 自定义监控接口启动器的配置 ====================== ...
- thrift生成c++服务端和客户端
https://blog.csdn.net/jdx0909/article/details/84727523 https://blog.csdn.net/luoyexuge/article/detai ...
- MySQL--INSERT INTO ... ON DUPLICATE KEY UPDATE ...
转自:https://my.oschina.net/iceman/blog/53735 如果在INSERT语句末尾指定了ON DUPLICATE KEY UPDATE,并且插入行后会导致在一个UNIQ ...
- POJ 1O17 Packets [贪心]
Packets Description A factory produces products packed in square packets of the same height h and of ...
- windows下隐藏文件夹
在cmd中找到文件夹所在的路径,然后执行以下命令 隐藏文件:attrib 文件名 +s +h 显示隐藏文件:attrib 文件名 -s -h 后记:attrib指令用于修改文件的属性,文件的常见属性有 ...
- python 并发执行
并发执行, 精简代码. 适用python2 和python3 # -*- encoding:utf-8 -*- from threading import Thread from multiproce ...
- 爬虫笔记(十三)——lxml库的使用
HTML示例代码: text = ''' <div> <ul> <li class="item-0"><a href="link ...
- 【转】高频使用的git清单
侵删 作者: 阮一峰 链接: http://www.ruanyifeng.com/blog/2015/12/git-cheat-sheet.html 我每天使用 Git ,但是很多命令记不住. 一般来 ...