判断越界应该是如果越界直接continue，你这样写如果越界了也会执行到magic==2的部分
by _caiji_ @ 2021-02-02 14:07:22
@[caijianhong](/user/390033) 谢谢
by QiaoHongYi @ 2021-02-02 14:08:51
改完后：
by QiaoHongYi @ 2021-02-02 14:12:11