标签：
（1）for循环中i>0应改为i>=0
x = [ 3 2 5],y = 2
x = [ 3 4 5],y = 2
x = [ 2 ],y = 2
(2)for 循环中应改为for(i = x.length -1 ; i >= 0; i--)
x = [ 0 2 ]
x = [ 2 0 0]
x = [ 0 ]
软件测试 homework2
原文地址：http://www.cnblogs.com/hersenxiao/p/5248354.html
