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MathGroup Archive 2005

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Re: repeating elements in a list

  • To: mathgroup at smc.vnet.net
  • Subject: [mg54910] Re: [mg54878] repeating elements in a list
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Sun, 6 Mar 2005 00:55:59 -0500 (EST)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

lst={A,B,C};

n=3; 
newlst=Flatten[Table[#,{n}]&/@lst]

{A,A,A,B,B,B,C,C,C}


Bob Hanlon

> 
> From: Torsten Coym <torsten.coym at eas.iis.fraunhofer.de>
To: mathgroup at smc.vnet.net
> Date: 2005/03/05 Sat AM 01:34:23 EST
> To: mathgroup at smc.vnet.net
> Subject: [mg54910] [mg54878] repeating elements in a list
> 
> Hello,
> 
> suppose I have list
> 
> lst={A, B, C}
> 
> and I want to create a new list, where all elements are repeated n times 
> so that (for n=3):
> 
> newlst={A, A, A, B, B, B, C, C, C}
> 
> I have the following code to do this:
> 
> n=3;
> newlst=Flatten[Table[Table[lst[[i]], {n}], {i, Length[lst]}]];
> 
> but I'm pretty sure, that there must be a more elegant way to solve the 
> problem.
> 
> 
> thank you
> 
> 


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