Re: Combination List
- To: mathgroup at smc.vnet.net
- Subject: [mg77914] Re: [mg77869] Combination List
- From: DrMajorBob <drmajorbob at bigfoot.com>
- Date: Tue, 19 Jun 2007 06:57:55 -0400 (EDT)
- References: <31344098.1182166936799.JavaMail.root@m35>
- Reply-to: drmajorbob at bigfoot.com
Maybe you meant:
Needs["Combinatorica`"]
Subsets[Range@4, {3}]
{{1, 2, 3}, {1, 2, 4}, {1, 3, 4}, {2, 3, 4}}
or maybe
Select[Permutations[Range@4, {3}], OrderedQ]
{{1, 2, 3}, {1, 2, 4}, {1, 3, 4}, {2, 3, 4}}
???
I have no clue what rule you used to come up with this:
> 1 2 3
> 1 2 4
> 1 3 4
> 1 4 2
Bobby
On Mon, 18 Jun 2007 06:09:40 -0500, Bruno Campanini <BC at gmail.com> wrote=
:
> I know combinations of 4 elements taken 3 by 3 is 4,
> that is Binomial[4,3] = 4
> How can I get the list:
> 1 2 3
> 1 2 4
> 1 3 4
> 1 4 2
>
> The same way I get permuations list from Permutations[{...}]
> ???
>
> Bruno
>
>
-- =
DrMajorBob at bigfoot.com