So for example if I have the lists

```
a = [1,1,1,2,2]
b = [1,1,2,2,2]
c = [2,1,1,1,1]

```

I would want to get the longest streak of the first element in the list, so for example `a` would give 3, `b` would give 2 and `c` would give 1. I know I could create a while loop and count the streak that way, but I was wondering if there's a more elegant way to do this?