Java for LeetCode 069 Sqrt(x)
Implement int sqrt(int x).
Compute and return the square root of x.
解题思路一:
public int mySqrt(int x) {
return (int)Math.sqrt(x);
}
神奇般的Accepted。
解题思路二:
参考平方根计算方法 计算平方根的算法
这里给出最简单的牛顿法,JAVA实现如下:
public int mySqrt(int x) {
double g = x;
while (Math.abs(g * g - x) > 0.000001)
g = (g + x / g) / 2;
return (int) g;
}
Java for LeetCode 069 Sqrt(x)的更多相关文章
- LeetCode 069 Sqrt(x) 求平方根
Implement int sqrt(int x).Compute and return the square root of x.x is guaranteed to be a non-negati ...
- Java for LeetCode 216 Combination Sum III
Find all possible combinations of k numbers that add up to a number n, given that only numbers from ...
- Java for LeetCode 214 Shortest Palindrome
Given a string S, you are allowed to convert it to a palindrome by adding characters in front of it. ...
- Java for LeetCode 212 Word Search II
Given a 2D board and a list of words from the dictionary, find all words in the board. Each word mus ...
- Java for LeetCode 211 Add and Search Word - Data structure design
Design a data structure that supports the following two operations: void addWord(word)bool search(wo ...
- Java for LeetCode 210 Course Schedule II
There are a total of n courses you have to take, labeled from 0 to n - 1. Some courses may have prer ...
- Java for LeetCode 200 Number of Islands
Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surro ...
- Java for LeetCode 188 Best Time to Buy and Sell Stock IV【HARD】
Say you have an array for which the ith element is the price of a given stock on day i. Design an al ...
- Java for LeetCode 154 Find Minimum in Rotated Sorted Array II
Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 migh ...
随机推荐
- Log4Net使用详解
1.Log4Net环境的搭建与基本配置 (1)Log4Net框架介绍 Log4net 是 Apache 下一个开放源码的项目,它是Log4j 的一个克隆版.我们可以控制日志信息的输出目的地.L ...
- vagrant up时提示 Authentication failure. Retrying
vagrant up时提示 Authentication failure. Retrying 如图,启动时就报这个错误,virtualbox启动正常 用vagrant的账号密码也可以登录 就是不能使用 ...
- Linux下tomcat作为守护进程运行(开机启动、以指定的用户运行、解决非root身份不能绑定1024以下端口的问题)的配置方法
如题. 参考资料: http://www.jdiy.org/read.jd?id=y0haaynq1w http://blog.csdn.net/shw2004/article/details/578 ...
- Writing the first draft of your science paper — some dos and don’ts
Writing the first draft of your science paper — some dos and don’ts 如何起草一篇科学论文?经验丰富的Angel Borja教授告诉你 ...
- 网友微笑分享原创Jquery实现瀑布流特效
首先非常感谢网友微笑的无私分享,此Jquery特效是一款非常流行和实用的瀑布流布局,核心代码只有几十行,是我见过代码量最少的瀑布流布局,非常适合网友们学习哦,希望大家好好看一下这个Jquery特效的原 ...
- WAF与IPS的区别总结
谁是最佳选择? Web应用防护无疑是一个热门话题.由于技术的发展成熟和人们对便利性的期望越来越高,Web应用成为主流的业务系统载体.在Web上“安家”的关键业务系统中蕴藏的数据价值引起攻击者的青睐,网 ...
- WPF 获取IP地址
List<string> ipList = new List<string>(); foreach (IPAddress _IPAddress in Dns.GetHostEn ...
- Random.nextint() 和Math.random()的区别
Random.nextint() 和Math.random()的区别 Java代码 Random rand = new Random(); long startTime = System.nano ...
- Java转义符\\|
http://blog.csdn.net/stewen_001/article/details/22871737 看一段程序 String t = "a||b||c||d"; St ...
- editplus快速定位到文章头部和尾部
经常用editplus发现有时文档比较长,要查找前面的内容时得一直滚动鼠标滚轮,或者拉动右侧边栏的导航标签,很少麻烦,有没有好的方法快速定位editplus到头部和尾部呢? 其实很简单,editplu ...