They're the same if the constraint is equal rather than upto a frequency count/distribution.
----- Original Message ----- From: Raul Miller <[email protected]> To: Programming forum <[email protected]> Sent: Tuesday, May 10, 2016 2:48 AM Subject: Re: [Jprogramming] challenge: optimizing permutations with repeat count Those are two different concepts, as I understand them: "Anagrams with repetition": AABB ABAB ABBA BAAB Constrained by a frequency count for each digit: ABB ABBA BAA BAB FYI, -- Raul On Tue, May 10, 2016 at 2:12 AM, 'Pascal Jasmin' via Programming <[email protected]> wrote: > Cool, but not quite the same. A permutation (in the sense I'm looking for) > is constrained by a frequency count for each digit: Anagrams with repetition. > > > > ----- Original Message ----- > From: Raul Miller <[email protected]> > To: Programming forum <[email protected]> > Sent: Tuesday, May 10, 2016 12:11 AM > Subject: Re: [Jprogramming] challenge: optimizing permutations with repeat > count > > Here's another approach for permutations with repetitions in J. > > If we characterize a permutation with repetitions as belonging to a > sequence with a specific length a, and a maximum value b, and having > an index value y, we can a verb for the argument pattern (a,b) Ap y > like this: > > Ap=: #/@[ #: ] > > Example use: > > 10 60 Ap ?5#60^10x > 34 56 50 9 15 28 34 11 40 43 > 32 9 50 41 37 25 41 18 36 47 > 30 27 17 58 19 40 41 2 31 25 > 23 18 33 58 24 20 32 38 38 0 > 29 16 32 9 59 46 36 15 10 40 > > Thanks, > > -- > Raul > > ---------------------------------------------------------------------- > 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
