字符串反转变形（asd zxc qwe -> qwe zxc asd）

1 public String reverse(String str){
2     String s = "";
3     String[] strings = str.split(" ");
4     for (int i = strings.length - 1; i > 0 && i<strings.length ; i--) {
5         s = strings[i] + " ";
6     }
7     return s;
8 }

asd zxc qwe -> qwe zxc asd