Masters, could you tell me how to implement this algorithm using graphs:
10 minutes 2 different customers in different date, the number of occurrences of the
For example,
The 2021-03-10 09:00:00 zhang
The 2021-03-10 09:01:00 li si
The 2021-03-10 09:02:00 fifty

The 2021-03-29 10:00:00 zhang
The 2021-03-29 10:01:00 li si

The 2021-03-30 09:03:00 zhang
The 2021-03-30 09:05:00 li si
The 2021-03-30 09:15:00 fifty

The result is Tom, dick and harry 3
Zhang SAN fifty and 1
Li si fifty and 2