题目: Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum product you can get. For example, given n = 2, return 1 (2 = 1 + 1); given n = 10, return 36 (10 =…

题目: Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight). For example, the 32-bit integer ’11' has binary representation 00000000000000000000000000001011, so the function should…

题目: Given an integer (signed 32 bits), write a function to check whether it is a power of 4. Example:Given num = 16, return true. Given num = 5, return false. 实现: class Solution { public: bool isPowerOfFour(int num) { ) && ((num & (num - )) ==…

[139-Word Break(单词拆分)] [LeetCode-面试算法经典-Java实现][全部题目文件夹索引] 原题 Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words. For example, given s = "leetcode", di…

id=1716">[POJ 1716]Integer Intervals(差分约束系统) Integer Intervals Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 13425   Accepted: 5703 Description An integer interval [a,b], a < b, is a set of all consecutive integers beginning with…

8. String to Integer (atoi) Total Accepted: 93917 Total Submissions: 699588 Difficulty: Easy Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask…

场景描述:多线程输出1到100,对静态Integer对象加锁,synchronized代码块中操作Integer对象,发生线程安全问题(数据重复) 代码: public class MyRunnableTest implements Runnable { public static Integer i = new Integer(0); @Override public void run() { while(true){ synchronized (i) { if(i<100){ i++; Sy…

首先从标题说起,为啥说抓取网站数据不再难(其实抓取网站数据有一定难度),SO EASY!!!使用Fizzler全搞定,我相信大多数人或公司应该都有抓取别人网站数据的经历,比如说我们博客园每次发表完文章都会被其他网站给抓取去了,不信你们看看就知道了.还有人抓取别人网站上的邮箱.电话号码.QQ等等有用信息,这些信息抓取下来肯定可以卖钱或者干其他事情,我们每天都会时不时接到垃圾短信或邮件,可能就这么回事了,有同感吧,O(∩_∩)O哈哈~. 本人前段时间了写了两个程序,一个程序是抓取某彩票网站的数据(双…

Prison Break Time Limit: 5000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3214    Accepted Submission(s): 829 Problem Description Rompire is a robot kingdom and a lot of robots live there peacefully. But on…

//此题是easy题,比较简单,主要困难在考虑全输入的各种情况://1.开始的时候有空格等空白字符//2.开头有加减号//3.溢出(第一次写就是没有考虑到这个情况) //C代码int myAtoi(char* str) { ; ; ; while(isspace(str[i])) { i++; } if(str[i] == '-') { IsNegative = ; i++; } else if(str[i] == '+') { IsNegative = ; i++; } else { } fo…