This? (/: /:~ ;@(<@i.@#/.~))1 2 1 1 2 0 0 1 2 1
-- Raul On Wed, Mar 28, 2018 at 2:32 PM, 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 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
