For a moment I was thinking you wanted 2 2 < ;. _3 a
┌───┬───┬────┐ │1 1│1 1│1 _1│ │4 2│2 1│1 _1│ ├───┼───┼────┤ │4 2│2 1│1 _1│ │9 3│3 1│1 1│ └───┴───┴────┘ but you didn't. How is your selection of submatrices defined? Ben On Thu, 12 Dec 2019 at 10:43, Nimp O <[email protected]> wrote: > Hello everyone, > > > Given > ]a=: 3 4 $ 1 1 1 _1 4 2 1 _1 9 3 1 1 > > > 1 1 1 _1 > > 4 2 1 _1 > > 9 3 1 1 > > I want to find the submatrices: > > f a > ┌───┬───┬────┐ > │1 1│1 1│1 _1│ > │4 2│4 1│4 _1│ > ├───┼───┼────┤ > │4 2│4 1│4 _1│ > │9 3│9 1│9 1│ > └───┴───┴────┘ > > I have a quite lengthy solution for this task. > I was wondering if anyone can come up with something more J-like and > elegant than what I have. > > Thanks. > > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
