摘要：
View Angle View Angle Description Flatland has recently introduced a new type of an eye check for the driver's licence. The check goes like that: ther 阅读全文
摘要：
Fibonacci again and again Fibonacci again and again Description 任何一个大学生对菲波那契数列(Fibonacci numbers)应该都不会陌生，它是这样定义的： F(1)=1; F(2)=2; F(n)=F(n-1)+F(n-2)(n 阅读全文