interchanging elements in a list
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg1993] interchanging elements in a list
- From: Jack Goldberg <jackgold at math.lsa.umich.edu>
- Date: Wed, 6 Sep 1995 23:50:09 -0400
Am I the only Mma user to wonder why the obvious list
command Interchange is missing from Mma? It is easy
enough to programm but why should we have to? Interchange
is not a name used anywhere else in Mma (?), it is a natural list operation,
it is important in Gaussian Elimination...
should yield list with the nth and mth entries interchanged.
Of course, Interchange might well be designed to handle other heads
besides List and perhaps even have some level specs as options.
Univ. of Michigan
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