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switch list elements, index from inside ??

  • Subject: [mg2644] switch list elements, index from inside ??
  • From: davep at
  • Date: Sun, 3 Dec 1995 02:53:00 -0500
  • Approved:
  • Distribution: local
  • Newsgroups: wri.mathgroup
  • Organization: Wolfram Research, Inc.


I have a problem regarding the interchanging of list elements (using the routine 
posted by Richard Mercer), when I want to index the elements from inside the 


Mma complains that the part and position specification (that's m and n) in 
ReplacePart is neither an integer nor a list of non zero integers.
Why doesn't Mma accept the (Random-) Integers ? This is probably a no brainer, 
but I just don't see it.

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