Consider I. 1 0 1 0 0 0 0 2 (e.~ [: i. 1 + >./) I. 1 0 1 1 0 1 (e.~ [: i. 1 + >./) I. 1 0 1 0 0 0 1 0 1
How long should the result be? Thanks, -- Raul On Wed, Oct 2, 2019 at 12:50 PM Michal Wallace <[email protected]> wrote: > > Does I.inv have a working implementation? > > I'd expect the domain to be any ascending sequence of positive whole > numbers (possibly with repeats): > > 3 4 9 e.~ i.10 > 0 0 0 1 1 0 0 0 0 1 > I. 3 4 9 e.~ i.10 > 3 4 9 > I. (i.@:>:@(>./) e. ]) 3 4 9 NB. hypothetical I.inv, doesn't handle > repeats > 3 4 9 > > But anything I throw at it gives me a domain error: > > I.inv 3 4 9 > |domain error > | I.inv 3 4 9 > > > What am I missing? > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
