Files
Learn/day2
2025-07-03 21:46:54 +08:00
..
2025-06-29 21:28:12 +08:00
2025-07-03 21:46:54 +08:00

简并

'a/=2' == 'a=a/2'

切片

x[ a: b :c ]中c代表距 默认是1(所以-1是倒过来)