Matt Youell built
built
/ gist:42971
Created
January 4, 2009 01:07
— forked from anonymous/gist:42949
Didn't like that I had to reassemble the Coins list. Took advantage of parametric temp variables (See Coins variable)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| -module(change2). | |
| -export([find_variations/2]). | |
| -export([count_change/1]). | |
| find_variations(0, _) -> 1; % No amount given. | |
| find_variations(_, []) -> 0; % No coins given. | |
| find_variations(Amount, _) % Amount is impossible. | |
| when Amount < 0 -> 0; | |
| find_variations(Amount, [Coin|Rest]=Coins) -> |