Re: Permutations.
- To: mathgroup at smc.vnet.net
- Subject: [mg14789] Re: [mg14771] Permutations.
- From: wself at viking.emcmt.edu (Will Self)
- Date: Wed, 18 Nov 1998 01:28:52 -0500
- Sender: owner-wri-mathgroup at wolfram.com
Alan W.Hopper speaks of
>wanting to find all the permutation subsets (with no
>duplication and order not counting), of a numerical or symbolic list
Alan,
The following is an easy way to get what you want. It may not be as
efficient as code written from scratch.
Sort[Flatten[Permutations/@KSubsets[{a,b,c,d},3],1]]
Of course, the Sort is optional, or you may want to sort by some other
comparison function than the default.
Will Self