当一个‘字符串‘数据表达不了的时候，就会要用到数组，然后数组就可以用循环的方式来弄，foreach for
--- 即 所谓 下面更多
when in doubt, use brutal force,
when complicate, use signal mind to do it one by one, because it s computer a machine
---- or step by step ....
原文：http://www.cnblogs.com/qinqiu/p/4475827.html