继续我们的推理问题之旅,今天我们要对付的是一个Google的面试题:Two Egg Problem. 我们开始吧! No.2  Google Interview Puzzle : 2 Egg Problem * You are given 2 eggs. * You have access to a 100-storey building. * Eggs can be very hard or very fragile means it may break if dropped from the…

Egg Problem 时间限制(普通/Java):1000MS/3000MS 运行内存限制:65536KByte总提交: 22 测试通过: 7 描述 There is a very interesting problem described as follows: You are given two eggs. You have access to a 100-storey building. An egg that survives a fall can be used again. A b…

The Two Egg Problem 曾经是Google的一道经典题. 题意:有一个百层高楼,鸡蛋在\(L\)层及以下扔都不碎,在\(L\)层以上都会碎.现在某人有\(k\)个鸡蛋,问在最坏情况下,至少扔多少次(用\(m\)表示)可以确定\(L\)的值. 分析:先来考虑\(k=1\)的情况.只有1个鸡蛋,为了得到一个确定的\(L\),只能从第一层开始,逐渐尝试增加楼层高度,因此\(m=100\)时,无论\(L\)的值是多少,都可以被确定. 再来考虑\(k=\infty\)的情况.这种情况就变为…

Linux就这个范儿 第10章 生死与共的兄弟 就说Linux系统的开机.必须经过加载BIOS.读取MBR.Boot Loader.加载内核.启动init进程并确定运行等级.执行初始化脚本.启动内核模块.执行对应运行等级的初始化脚本.个性化设置.进入登录状态这十个步骤.怎么样?服气吧!如果觉得还不够直观,那么看一下图10.1 Linux系统启动流程吧. LVS的IPVS模块也是采用动态加载的方式 图10.1 Linux系统启动流程那关机是不是会省点事儿呢?不是!Linux的关机会涉及4个命令和4…

本文投稿文章,作者:MangoMade(简书) AutoLayout非常强大也非常易用,可读性也很强,加上各种第三方AutoLayout库,让你布起局来犹如绷掉链子的狗!根本停不下来!以前的 1 label.frame.origin.y + label.frame.size.height + 10 如今只用: 1 2 3 button.snp_makeConstraints{     $0.top.equalTo(label.snp_bottom).offset(10) } 真是好用得不要不要.…

AVR Programming Methods  There are many ways to program AVR microcontrollers. Since many people ask about different ones at one time or another, I thought I'd outline them here so that their questions can be answered quickly and efficiently. Please f…

这近2000行的代码,要是没有Source Insight,都不知道怎么看下去.跟着跟着来到了PE文件查杀的地方,发现前面都中规中矩地进行PE属性检查,中间一段开始扫描每个区块,然后和特征库的size对比扫描查毒.再后面,加了对一些流行病毒的特定查杀.(这个比较晕.) 代码注释如下(代码过长,可能有些人加载较慢,请耐心等待……): //传说中的PE文件查杀 int cli_scanpe(int desc, cli_ctx *ctx) { uint16_t e_magic; /* DOS sign…

  In any case/on any account  在任何情况下 “Varargs”是“variable number of arguments”的意思.有时候也被简单的称为“variable arguments” Polymorphism  https://docs.oracle.com/javase/tutorial/java/IandI/polymorphism.html is derived from 派生 pre 前提条件  affirm 断言.肯定 alertnate 交替的…

优秀的DEMO cat /etc/init.d/functions   -->里面有颜色定义cat /etc/rc.d/rc.sysinit cat /etc/init.d/nfscat /etc/init.d/portmap cat /etc/init.d/httpd 0. function文件 # -*-Shell-script-*- # # functions This file contains functions to be used by most or all # shell sc…

Life is just a series of trying to make up your mind. 生活只是由一系列下决心的努力所构成. Some people say it is not your abilities but your decisions that determines what your life is and what your future will be. Nevertheless, to some extent, I have some reservation…