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
