摘要：
Password security is a tricky thing. Users prefer simple passwords that are easy to remember (like buddy), but such passwords are often insecu... 阅读全文
摘要：
Problem Description If you ever tried to read a html document on a Macintosh, you know how hard it is if no Netscape is installed. Now, who c... 阅读全文
摘要：
Because of the wrong status of the bicycle, Sempr begin to walk east to west every morning and walk back every evening. Walking may cause a li... 阅读全文
摘要：
A Fibonacci sequence is calculated by adding the previous two members the sequence, with the first two members being both 1. F(1) = 1, F(2) = ... 阅读全文