Re: matrix construction
- To: mathgroup at smc.vnet.net
- Subject: [mg41343] Re: [mg41306] matrix construction
- From: Bobby Treat <drmajorbob+MathGroup3528 at mailblocks.com>
- Date: Thu, 15 May 2003 04:04:54 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
<< DiscreteMath`Combinatorica`
n = 5;
s[i_] := Range@n
k = 3;
Transpose@Table[s[i][[RandomPermutation[n]]], {k}]
Bobby
-----Original Message-----
From: S White <susanlcw at aol.com>
To: mathgroup at smc.vnet.net
Subject: [mg41343] [mg41306] matrix construction
Hi all,
I am trying to construct an n x k matrix in the following way:
I have k distinct sets, call them S1, S2, ... , Sk, each with n
elements. I would like for column 1 to consist of elements which are
a random permutation of the elements of S1, column 2 a permutation of
S2, ..., column k a permutation of elements of Sk.
I would be very grateful for any ideas.
Thank you,
Susan
susanlcw at aol.com