@[lwthree](/user/897873) 第九行逗号后面应该是`str.length()/2`
by WZRYWZWY @ 2023-10-03 11:13:38
为什么啊 它不是左边然后右边然后全部吗
by lwthree @ 2023-10-04 09:11:02
@[lwthree](/user/897873) substr的用法是 字符串.substr(起点，长度);
by 闪亮的星星 @ 2024-01-29 09:23:27