See https://code.jsoftware.com/wiki/Essays/Progressive_Index-Of
This is in misc/miscutils/utils as progressiveindex, e.g. load'misc/miscutils/utils' 0 0 2 0 2 0 3 3 progressiveindex 2 2 2 3 4 2 4 8 6 8 On Wed, Nov 17, 2021 at 5:33 AM Pablo Landherr <[email protected]> wrote: > I cannot figure out how to make a "simple" verb that finds the indices > (like i.) but gives the next index if there are multiple occurrences, like > this > > 0 0 2 0 2 0 3 3 foo 2 2 2 3 4 > 2 4 8 6 8 > > I have a hunch a boolean matrix is involved but there I get stuck. > > Kr, > Pablo > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
