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Erlang bowling kata
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-module(bowling). | |
-export([main/1]). | |
main(_) -> | |
test(). | |
test() -> | |
% empty | |
[] = score([]), | |
% boring | |
[5, 11] = score([1, 4, 3, 3]), | |
% incomplete | |
[5] = score([1, 4, 3]), | |
% spare | |
[13, 19] = score([6, 4, 3, 3]), | |
% incomplete spare | |
[] = score([6, 4]), | |
% strike | |
[17, 24] = score([10, 4, 3]), | |
% incomplete strike | |
[] = score([10, 4]), | |
[] = score([10]), | |
% flubbed the end | |
[30, 60, 90, 120, 150, 180, 210, 240, 260, 270] = score([10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 0, 0]), | |
% perfect | |
[30, 60, 90, 120, 150, 180, 210, 240, 270, 300] = score([10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10]), | |
winner. | |
score(Rolls) -> | |
lists:sublist(score(Rolls, 0), 1, 10). | |
score([A,B,C|Rest], Previous) when A =:= 10 -> | |
[Previous+A+B+C | score([B,C|Rest], Previous+A+B+C)]; | |
score([A,B,C|Rest], Previous) when A+B =:= 10 -> | |
[Previous+A+B+C | score([C|Rest], Previous+A+B+C)]; | |
score([A,B|Rest], Previous) when A+B < 10 -> | |
[Previous+A+B | score(Rest, Previous+A+B)]; | |
score(_, _) -> | |
[]. |
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