c数组不需要，数组旋转不知道对没对 顺时针 可以考虑b[i][j]=a[x-y-j][y-x+i]; by a147852 @ 2024-08-16 18:23:14
@[a147852](/user/1129201) 嗯 by AK_lwh_888 @ 2024-08-20 18:29:21