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MathGroup Archive 2005

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"expanding a list"

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57860] "expanding a list"
  • From: Mark Coleman <mark at markscoleman.com>
  • Date: Fri, 10 Jun 2005 02:29:26 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Greetings,

I'd like to construct a list as follows. Say I have a list of reals  
{x1,x2,x3,...xn}, and another list of integers {r,s}. I'd like to  
make a new list

{{x1,x1,x1,...},{x2,x2,x2....},{x3,x3,x3,...},....,{xn,xn,xn,...}},  
where the first sublist is of length r, and the remaining sublists  
are of length s.


Thanks,

-Mark




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