My own accounting python euler problem

Ozz notvalid at
Sun Nov 8 20:42:09 CET 2009

vsoler schreef:
> Instead of subsets, do you mean permutations/combinations?  Since 2
> invoices can have the same amount perhaps the terms permutation is
> better.

As some other poster already suggested 'powerset' ( ) may be a better name, except 
for those duplicates, of course. On the other hand, I think viewing it 
as a powerset is the most 'natural' in this case. (imo permutations are 
about the order of objects, not about whether the objects are included 
in a set or not)


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