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MathGroup Archive 2000

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Re: Partition

  • To: mathgroup at smc.vnet.net
  • Subject: [mg22097] Re: Partition
  • From: "Allan Hayes" <hay at haystack.demon.co.uk>
  • Date: Mon, 14 Feb 2000 02:03:49 -0500 (EST)
  • References: <885iqv$a0a@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Kai,
Some possibilities:
I
<< DiscreteMath`Combinatorica`

Partitions[4]

{{4}, {3, 1}, {2, 2}, {2, 1, 1}, {1, 1, 1, 1}}

Compositions[4, 2]

{{0, 4}, {1, 3}, {2, 2}, {3, 1}, {4, 0}}


--
Allan
---------------------
Allan Hayes
Mathematica Training and Consulting
Leicester UK
www.haystack.demon.co.uk
hay at haystack.demon.co.uk
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565



"Kai Xiu" <kaixiu at students.uiuc.edu> wrote in message
news:885iqv$a0a at smc.vnet.net...
> I am wondering how to do a partition work in Mathematica which is like
> give all the solutions of
> x_1+x_2+x_3+...+x_n=n
> where all x's are positive integers and not necessarily be different to
each
> other.
>
> Thanks,
>
> Kai
>
>



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