[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Axiom-mail] A combinatorial question
From: |
Bill Page |
Subject: |
Re: [Axiom-mail] A combinatorial question |
Date: |
Wed, 3 Oct 2007 21:42:03 -0400 |
On 10/2/07, Alasdair McAndrew wrote:
> Thanks, Bill - thats terrific! It would be nice to have such a facility
> built in, wouldn't it?
>
Yes.
(1) -> )set message time on
(1) -> a:=[subSet(25,5,i) for i in 0..binomial(25,5)-1];
(1) ->
Type: List List Integer
Time: 58.00 (EV) + 6.61 (GC) = 64.61 sec
This works but obviously it should be possible to write an algorithm
that performs better than this ... :-( Sage can do it in less than a
second (via GAP) and apparently Mathematica can do it in about 0.04
seconds!
Regards,
Bill Page.