他山之石

摘要： 一般来说，从app store上面 下载下来的image位置，都是在 /Applications 下面使用命令创建安装U盘，（备份一下命令，太长，记不住）sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/create... 阅读全文

摘要： 第三步：安装openVPN请打开 ubuntu 官方文档。然后，从上到下，按照步骤，输入执行命令。大家只需要执行到 First trouble shooting 之前即可。不要怕麻烦，仔细读，一步一步试。这往篇文档相当不错，up主以前没有碰过linux，就照着这文档，完成了基本openvpn的安装配... 阅读全文

摘要： 第二步：登录到虚拟机一旦创建好虚拟机后，默认azure会打开TCP 22端口，即SSH的端口。所以，我们可以通过远程连接，访问和管理该虚拟机。首先，下载一个PuTTY软件。该软件很简单，就一个可执行程序，可以在windows端连接到远程机器上。下载地址。然后，双击PuTTY，在"Session" -... 阅读全文

摘要： Lambada [[http://www.yinyuetai.com/video/265213]]Trouble Is A Friend [[http://www.yinyuetai.com/video/524509]]Silver Lining [[http://www.yinyuetai.com/video/208871]]Good Is Good [[http://www.yinyuetai.com/video/118570]]Any Man Of Mine [[http://www.yinyuetai.com/video/5189]]Because You Loved Me [[htt 阅读全文

摘要： 国外eBook, 免费/授权 电子书列表 阅读全文

摘要： Write a program to convert decimal to 32-bit unsigned binary.Write a program to convert a 32-bit unsigned binary to decimal两个成对的问题！ 阅读全文

摘要： 【转】Top 5 Free Screen Recording Softwares For Windows该文章是转过来的，因为这里介绍了好几款免费的录制视频的软件。我自己需要使用，也许大家也有需求。1. EzvidEzvid is a screen recorder program that comes with an in-built video editor where you can split your recordings and add text in between two clips, creating a slideshow effect. There is no way t 阅读全文

摘要： Q:Given life time of different animals. Find period when maximum number of animals lived. ex [5, 11], [6, 18], [2, 5],[3,12] etc. year in which max no animals exists.A:Input intervals (or lifetimes): [5, 11], [6, 18], [2, 5], [3,12]1. Put the end and start times of the intervals in one array. Sort i 阅读全文

摘要： Q: function takes input x , y , A and Nreturns true ifthere are atleast N pairs of x and y satisfyingx^3 + y^3 = A;all inputs are postive integer valuesA: Taxicab numberhttp://en.wikipedia.org/wiki/Taxicab_number 阅读全文

摘要： Q: Suppose we want to convert one string S1 to another string S2 using only 3 types of operations:-Insert(pos,char) (costs 8)-Delete(pos) (costs 6)-Replace(pos,char) (costs 8)Find the sequence of steps to convert S1 to S2 such that the cost to convert S1 to S2 is minimum.Eg. 'calculate' to & 阅读全文