Streak or No Streak?

Question

R

All the best,
Question on the R language (probably). There are many lines of text like the client ID and date.
Client IDs are repeated, maybe twice in one day. How to count streaks?
A streak is when the client ID is repeated from day to day, say the day before yesterday and yesterday it is a double streak, and the day before yesterday, yesterday and today it is a triple streak. At the same time, from February 1 to February 11 and from February 13 to February 15, these are two streaks, one for 10 days and one for days, the maximum streak is of interest.

Answer 1

max(rle( as.character (data[data["id"]==1,"date"]))) the proposal is:
1. Select all dates by one ID
2. Do rle() on a column with dates, it will reveal consecutive chains and their lengths
3. Find the maximum