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Question: how can we interchange indices and entries of a table?

Question:how can we interchange indices and entries of a table?

math618 41 Maple
example
August 27 2008
0

for example,if we have a table T=table([aa=2, bb=3 cc=4, dd=5]),how can we get another table(2=aa,3=bb,4=cc,5=dd) ?

another question:
if we have table([aa=3,bb=5,cc=1,dd=3]),how can we output indices according to entries' ascending order?

thank you
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