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Re: Reordering lists?!

  • To: mathgroup at
  • Subject: [mg4527] Re: Reordering lists?!
  • From: Paul Abbott <paul at>
  • Date: Wed, 7 Aug 1996 04:17:36 -0400
  • Organization: University of Western Australia
  • Sender: owner-wri-mathgroup at

Andre and Alain wrote:

>  Hey! I have a list of Numbers, 1 to 4, and wish to rescale them so
> that 1 replkaces 4 and 3 replaces 2 and 2 replaces 3 etc. I made a 
> little code to do this on an element per element basis and it doesn't 
> seem to do
> it! Could someone let me know what I'm doing wrong or whether it's a 
> Mma problem? Thanks

Why not just use

	list /. {4->1,3->2,2->3,1->4}

which will do what you want ...


Paul Abbott
Department of Physics                       Phone: +61-9-380-2734 
The University of Western Australia           Fax: +61-9-380-1014
Nedlands WA  6907                         paul at 

          Black holes are where God divided by zero


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