循环错了，你要学一下冒泡排序先
by WsW_ @ 2023-07-17 11:14:05
```
5 4 3 2 1
```
你自己手动试试用你那个排序会怎样
by WsW_ @ 2023-07-17 11:14:51
if里面应该是a[i]与a[j+1]互换；而不是a[j]与a[j+1];
by chengxuyuan666 @ 2023-09-13 15:49:02