说明：  刚接触编程，为了从贵网站下点东西学习下，所以将自己编的一些自认为对初学者比较有用的简单程序，供专业的审查，非专业的学习．
(fourth year of programming, from your website to the next point learning things, So their addendum to the self that are more useful for beginners the simple procedure for the review of the professional, non-professional learning.)