136. Single Number Given an array of integers, every element appears twice except for one. Find that single one. (Easy) Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 分析: 第一问属于技巧题,做过就会,…

原创作品,允许转载,转载时请务必以超链接形式标明文章 原始出处 .作者信息和本声明.否则将追究法律责任.http://ovcer.blog.51cto.com/1145188/1581326 [root@openfire-x86v-app01 ~]# tsung  -f jabber_register.xml startStarting Tsung"Log directory is: /root/.tsung/log/20141122-0639""Maximum number…

好久没切 leetcode 的题了,静下心来切了道,这道题比较有意思,和大家分享下. 我把它叫做 "不一样的猜数字游戏",我们先来看看传统的猜数字游戏,Guess Number Higher or Lower.题意非常的简单,给定一个数字 n,系统会随机从 1 到 n 中抽取一个数字,你需要写一个函数 guessNumber,它的作用是返回系统选择的数字,同时你还有一个外部的 API 可以调用,是为 guess 函数,它会将你猜的数字和系统选择的数字比较,是大了还是小了. 非常的简单,…

We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which number I picked. Every time you guess wrong, I'll tell you whether the number I picked is higher or lower. However, when you guess a particula…

Leetcode之动态规划(DP)专题-264. 丑数 II(Ugly Number II) 编写一个程序,找出第 n 个丑数. 丑数就是只包含质因数 2, 3, 5 的正整数. 示例: 输入: n = 10 输出: 12 解释: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12 是前 10 个丑数. 说明: 1 是丑数. n 不超过1690. dp含义: dp[i]表示第i-1个丑数. class Solution { public int nthUglyNumber(int n)…

[LeetCode]375. Guess Number Higher or Lower II 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/guess-number-higher-or-lower-ii/description/ 题目描述: We are playing the Guess Game. The game is as f…

'Invalid update: invalid number of rows in section 5.  The number of rows contained in an existing section after the update (299) must be equal to the number of rows contained in that section before the update (276), plus or minus the number of rows…

We define the smallest positive real number as the number which is explicitly greater than zero and yet less than all other positive real numbers except itself. The smallest positive real number, if exists, implies the existence of the second greater…

题目描述 给定一个非空整数数组,除了某个元素只出现一次以外,其余每个元素均出现了三次.找出那个只出现了一次的元素. 说明: 你的算法应该具有线性时间复杂度. 你可以不使用额外空间来实现吗? 示例 1: 输入: [2,2,3,2] 输出: 3 示例 2: 输入: [0,1,0,1,0,1,99] 输出: 99 解题思路 由于所有数都是整数,所以最大位数为32位,对于出现三次的数,统计每一位上1出现的次数一定能被3整除,而不能被三整除的位一定是单独出现的数造成的,所以依次统计每一位的次数,并把不能被…

We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which number I picked. Every time you guess wrong, I'll tell you whether the number I picked is higher or lower. However, when you guess a particula…