Hiya,
rc=: i.~ (] - {) /:@/:
rc 1 2 1 1 2
0 0 1 2 1
Cheers,
Louis
> On 28 Mar 2018, at 20:32, Joe Bogner <[email protected]> wrote:
>
> I think this is an easy one but it's escaping me. How to calculate a
> running count of an item in a list?
>
> runct (1,2,1,1,2) -: 0,0,1,2,1
> runct (5,6,5,5,6) -: 0,0,1,2,1
>
> This seems to be a good start
>
> = (5,6,5,5,6)
> 1 0 1 1 0
> 0 1 0 0 1
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