[GAP Forum] ListPerm

[Laurent Bartholdi]

Hi,
In the course of programming some stuff, it's been useful for me to
use ListPerm with a specified length of result. I coded:

MyListPerm := function(perm,n)
  local l;
  l := ListPerm(perm);
  Append(l,[Length(l)+1..n]);
  return l;
end;

gap> ListPerm((1,2));
[ 2, 1 ]
gap> MyListPerm((1,2),3);
[ 2, 1, 3 ]
gap> PermList(MyListPerm((1,2),3));
(1,2)

Maybe this is of general interest, and should be coded as another
method for ListPerm?

Best, Laurent

--
Laurent Bartholdi          \  laurent.bartholdi<at>gmail<dot>com
EPFL SB SMA IMB MAD   \    Téléphone: +41 21-6930380
CH-1015 Lausanne, Switzerland \      Fax: +41 21-6930385