cmbnu=: 4 : ';(,.&.><@;\.)^:(<:x) ~ i.y' NB. combinations with non unique elements
3 cmbnu 4 0 0 0 0 0 1 0 0 2 0 0 3 0 1 1 0 1 2 0 1 3 0 2 2 0 2 3 0 3 3 1 1 1 1 1 2 1 1 3 1 2 2 1 2 3 1 3 3 2 2 2 2 2 3 2 3 3 3 3 3 R.E. Boss > -----Oorspronkelijk bericht----- > Van: [EMAIL PROTECTED] [mailto:programming- > [EMAIL PROTECTED] Namens R.E. Boss > Verzonden: vrijdag 28 september 2007 18:50 > Aan: 'Programming forum' > Onderwerp: RE: [Jprogramming] RE: Pairs revisited... > > > ;(](,.&.><@;\.)^:2]) i.4 > 0 0 0 > 0 0 1 > 0 0 2 > 0 0 3 > 0 1 1 > 0 1 2 > 0 1 3 > 0 2 2 > 0 2 3 > 0 3 3 > 1 1 1 > 1 1 2 > 1 1 3 > 1 2 2 > 1 2 3 > 1 3 3 > 2 2 2 > 2 2 3 > 2 3 3 > 3 3 3 > > > R.E. Boss > > > > -----Oorspronkelijk bericht----- > > Van: [EMAIL PROTECTED] [mailto:programming- > > [EMAIL PROTECTED] Namens Paul Gauthier > > Verzonden: vrijdag 28 september 2007 18:20 > > Aan: 'Programming forum' > > Onderwerp: [Jprogramming] RE: Pairs revisited... > > > > > > Roger Hui gave a non-unique pair algorithm as below: > > > > Roger Hui rhui000 at shaw.ca > > Sat Feb 10 02:49:22 HKT 2007 > > > > Combinations are usually defined to have unique elements. > > http://www.jsoftware.com/jwiki/Essays/Combinations > > However, if non-unique is what you want: > > > > ; (i. ([ ,. }.)&.> <@i.) 4 > > 0 0 > > 0 1 > > 0 2 > > 0 3 > > 1 1 > > 1 2 > > 1 3 > > 2 2 > > 2 3 > > 3 3 > > > > How would I go about having non-unique triplets, quadruplets etc. > > > > > > ---------------------------------------------------------------------- > > 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
