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in reply to Re: (Golf) Giving Change
in thread (Golf) Giving Change

No, it does not correspond to the 0-1 Knapsack problem (which is NP-complete), but to the fractional knapsack problem, which can be solved using a greedy algorithm (put as many of the largest denomination as will fit, then continue to the next lower denomination, and so on until you reach the target amount).

--ZZamboni