Created
June 14, 2009 06:35
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| -module(recursion). | |
| -export([bump/1, average/1, even_only/1]). | |
| bump([]) -> | |
| []; | |
| bump([H|T]) -> | |
| [H + 1 | bump(T)]. | |
| average(L) -> | |
| sum(L) / length(L). | |
| sum([]) -> | |
| 0; | |
| sum([H|T]) -> H + sum(T). | |
| even_only([]) -> | |
| []; | |
| even_only([H|T]) when H rem 2 == 0 -> [H | even_only(T)]; | |
| even_only([_|T]) -> even_only(T). | |
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