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MathGroup Archive 2001

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Re: Working with strings

  • To: mathgroup at
  • Subject: [mg31962] Re: [mg31940] Working with strings
  • From: Omega Consulting <omega_consulting at>
  • Date: Fri, 14 Dec 2001 04:21:28 -0500 (EST)
  • Sender: owner-wri-mathgroup at

At 12:08 AM 12/13/2001, Brian Higgins wrote:
>I have a list of string characters that I would like to group in a
>particular way. The list has the following structure:
>{n UpperCase Characters, x, m UpperCase Characters}
>Here is an example:
>myString={"S", "T", "M", "x", "R", "K", "P", "G"}
>Now I would like to form the following groupings:
>{"SxR", "SxK", "SxP", "SxG", "TxR", "TxK", "TxP", "TxG", "MxR", "MxK",
>"MxP", \
>A brute force way of doing this is
>subString[n_] := Split[myString, UpperCaseQ[#2] && UpperCaseQ[#1]
>Flatten[Outer[StringJoin, Outer[StringJoin, subString[1],
>     subString[3]]]
>Does anyone have any elegant way of doing this with perhaps using
>replacement rules?
>Thanks much,

I don't know about elegant, but here's another way to do it.



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