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Re: Union

  • To: mathgroup at
  • Subject: [mg33119] Re: Union
  • From: peter weijnitz <pewei at>
  • Date: Sun, 3 Mar 2002 17:15:23 -0500 (EST)
  • References: <a5t1p2$64u$>
  • Sender: owner-wri-mathgroup at

something along these lines?
Where v is the vector. You can make a module of it all.

I thought I would have to sort the result of the Union part but it was not
Peter W

Helge Andersson wrote:

> Hello,
> I wonder if it is possible to disable the sort-function of the Union command?
> If not, can someone give me a short and nice procedure f, that can get the
> union of a list with the original order preserved (the first apperance
> should be left in the list). I'm not interrested in Do-loops solutions and
> and similar procedures (I can do that myself)
> example
> in:
> f[{5,4,3,4,1,6}]
> out:
> {5,4,3,1,6}
> Thanks in advance
> /Helge Andersson

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