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erlang coin changer with absolute priority premise scoring
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| change(Amount) -> % => Binding 2 x 1 | |
| {Coins, _} = lists:foldl(fun(Denom, {Coins, Total}) -> % => Invocation 2 x 1, Binding 4 x 1, Constant 1 x 1 | |
| Floor = floor(Total / Denom), % => Binding 1 x 1, Invocation 2 x 2 | |
| {Coins ++ lists:duplicate(Floor, Denom), Total - (Floor * Denom)} % => Invocation 2 x 4 | |
| end, {[], Amount}, [25, 10, 5, 1]), % => Constant 2 x 1 | |
| Coins. | |
| % Total = 2 + 2 + 4 + 1 + 1 + 4 + 8 + 2 = 24 |
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