Note that the number of combinations and the number of permutions are the same.
And, perm is just: ! A.&i. ] It seems like there ought to be a way of putting the permutations in 1 to 1 correspondence with the combinations (to give us a concise expression for combinations). -- Raul On Tue, Jun 26, 2012 at 12:41 PM, ed bierly <ebie...@gmail.com> wrote: > yes combinations not permutations > thought there might be a way that didn't loop > thank you for the references > > On Tue, Jun 26, 2012 at 12:30 PM, R.E. Boss <r.e.b...@planet.nl> wrote: > >> 4 comb 10 >> >> >> R.E. Boss >> >> >> > -----Oorspronkelijk bericht----- >> > Van: programming-boun...@jsoftware.com [mailto: >> programming-boun...@jsoftware.com] Namens ed bierly >> > Verzonden: dinsdag 26 juni 2012 18:15 >> > Aan: programming@jsoftware.com >> > Onderwerp: [Jprogramming] permutation list >> > >> > what is the best way to get this list of 210 vectors? >> > >> > 4!10 >> > ---------------------------------------------------------------------- >> > For information about J forums see http://www.jsoftware.com/forums.htm >> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
