Re: All permutations of a sequence
- To: mathgroup at smc.vnet.net
- Subject: [mg76277] Re: All permutations of a sequence
- From: Dave Seaman <dseaman at no.such.host>
- Date: Fri, 18 May 2007 06:35:34 -0400 (EDT)
- Organization: Information Technology at Purdue
- References: <f2h8t7$v4$1@smc.vnet.net>
On Thu, 17 May 2007 09:56:55 +0000 (UTC), Virgil Stokes wrote:
> I would like to get all unique permutations of a sequence (e.g.
> {1,2,3,4,5,6,7,8,9,10,11,12,13}) with the constraint that all sequences
> that have an opposite ordering are not included (e.g. {13, 12,
> 11,10,9,8,6,5,4,3,2,1}) would not be included.
> Are there some Mathematica commands that can be used to efficiently
> generate these permutations?
Surely every sequence has an opposite ordering, leaving you with nothing to
list.
--
Dave Seaman
Oral Arguments in Mumia Abu-Jamal Case to be heard May 17
U.S. Court of Appeals, Third Circuit
<http://www.abu-jamal-news.com/>