Isn't that a random permutation index of a vector of length (!n) ? Thanks,
-- Raul On Mon, Jan 11, 2016 at 1:02 PM, Skip Cave <[email protected]> wrote: > I was showing that a random permutation index of a vector of length n is: > > ?~!n > > However this isn't what Eddie was asking. > > Skip Cave > > > > On Mon, Jan 11, 2016 at 10:22 AM, Skip Cave <[email protected]> wrote: >> Sorry, >> >> I misunderstood the question. >> >> Skip Cave >> >> >> >> On Mon, Jan 11, 2016 at 9:55 AM, Roger Hui <[email protected]> wrote: >>> How is this relevant? I am proposing to use ?!21x, not ?~!21x . >>> >>> >>> On Mon, Jan 11, 2016 at 7:46 AM, Skip Cave <[email protected]> wrote: >>> >>>> To simplify the code for a permutation index: >>>> >>>> ?~!3 >>>> 5 0 3 2 1 4 >>>> >>>> #?~!10 >>>> 3628800 >>>> >>>> #?~!15 NB. Too many numbers. >>>> |out of memory >>>> | # ?~!15 >>>> >>>> Skip Cave >>>> Cave Consulting LLC >>>> >>>> >>>> On Mon, Jan 11, 2016 at 9:17 AM, Roger Hui <[email protected]> >>>> wrote: >>>> > Use extended precision integers. >>>> > >>>> > ? !21 >>>> > |domain error >>>> > | ?!21 >>>> > >>>> > ? !21x >>>> > 36282724980122910689 >>>> > >>>> > >>>> > >>>> > >>>> > On Mon, Jan 11, 2016 at 2:22 AM, Eddie Bracho <[email protected]> wrote: >>>> > >>>> >> >>>> >> (? ! 21) >>>> >> >>>> >> |domain error >>>> >> >>>> >> | ( ?!21) >>>> >> >>>> >> >>>> >> >>>> >> Is this intended behavior? I'm trying to shuffle an array by providing a >>>> >> random permutation to Anagram (A.), but this limitation does not allow >>>> me >>>> >> to shuffle arrays with more than 20 elements. >>>> >> >>>> >> ---------------------------------------------------------------------- >>>> >> 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 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
