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
