Re: (Golf) Per Mutations

57!

#!/usr/bin/perl -w

use strict;
use Data::Dumper;

my @b = p(1,2,3,4);

print Dumper( @b );

sub p
{
  $#_<1?[@_]:map{my$a=$_;map{[$a,@$_]}p(grep{$_!=$a}@_)}@_
}
[download]

Dr. Michael K. Neylon - mneylon-pm@masemware.com || "You've left the lens cap of your mind on again, Pinky" - The Brain

Comment on Re: (Golf) Per Mutations Download Code

Replies are listed 'Best First'.
Re (tilly) 2: (Golf) Per Mutations by tilly (Archbishop) on May 04, 2001 at 04:29 UTC
Didn't the rules say arbitrary list? Try this with the list (1,2,3,1) and you get incorrect output. However here is another 57 char solution that does not suffer from this deficiency. `sub p{ @_?map{my$x=shift;@r=map[$x,@$_],&p;push@_,$x;@r}1..@_:[] }` [download]	[reply] [d/l]
Re: Re: (Golf) Per Mutations by MeowChow (Vicar) on May 04, 2001 at 03:46 UTC
Awesome :) We can even bring that down to 49: `sub p { @_?map{my$a=$_;map[$a,@$_],p(grep$_!=$a,@_)}@_:[] }` [download] MeowChow s aamecha.s a..a\u$&owag.print	[reply] [d/l]
Re: Re: Re: (Golf) Per Mutations by dws (Chancellor) on May 04, 2001 at 03:59 UTC
Make that 48: `sub p { @_?map{my$a=$_;map[$a,@$_],p(grep$_^$a,@_)}@_:[] }` [download]	[reply] [d/l]