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Re: rule based program for "Deleting repeated members of a list."

  • To: mathgroup at smc.vnet.net
  • Subject: [mg81939] Re: rule based program for "Deleting repeated members of a list."
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sun, 7 Oct 2007 05:31:15 -0400 (EDT)
  • References: <fe7j44$qga$1@smc.vnet.net>

Hi,

s = {a, b, c, c, d, e, e, f, g, g, g, h, a, b};

and

s //. {a___, b_, b_, c___} :> {a, b, c}

will do it

or

First /@ Split[s]

may be faster

Regards
   Jens

mumat wrote:
> Hi,
> 
> I have a list s={a,b,c,c,d,e,e,f,g,g,g,h,a,b};
> 
> I need to write a program so that it reads the list and ignors
> repeated elements; so it outputs the following:
> 
> RepeatRemover[s]={a,b,c,d,e,f,g,h,a,b};
> 
> I am looking for a rule-based program to do this!
> 
> Any help would be greatly appreciated.
> 
> C.S.
> 
> 


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