谢谢您的回答,但是我用的是excel表格,怎样在excel中统计呢?
追答as picture
1. copy the total data to another colume
2. pusu following button and choose the new data
3. you will get unique data
4. type the following code in C C1: =SUMPRODUCT(--(A1:A10=B1))
and you can get the answer