找到了，a[mid].x 要在排序前保存下来
by Fire_Raku @ 2023-08-20 09:13:44
代码要自己调.jpg
by Elma_ @ 2023-08-20 19:36:04
@[Fire_Raku](/user/566200) 来自一个月后的感谢
by jr_linys @ 2023-09-20 11:35:03