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MathGroup Archive 2005

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Re: element selection

  • To: mathgroup at
  • Subject: [mg53643] Re: [mg53605] element selection
  • From: DrBob <drbob at>
  • Date: Fri, 21 Jan 2005 06:35:56 -0500 (EST)
  • References: <>
  • Reply-to: drbob at
  • Sender: owner-wri-mathgroup at

Send a small example.


On Thu, 20 Jan 2005 03:47:45 -0500 (EST), Bruyndonckx P. <pbruynd at> wrote:

> I have two long sorted lists of Integers.  If the difference between a number in list 1 and a
> number in list 2 is less than a certain value, both are selected to create a couple.  I am
> looking for a fast way to go through both lists and extract these elements to create a new list
> of couples.  I tried a number of things, but all of them were rather slow so I need some expert
> advice here.
> Thx,
> Peter

DrBob at

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