Responses for exercises in Exercism.
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-module(collatz_conjecture). |
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-export([steps/1]). |
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steps(1) -> 0; |
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steps(N) when N =< 0 -> error(badarg); |
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steps(N) when (N rem 2 == 0) -> 1 + steps(N div 2); |
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steps(N) -> 1 + steps(3*N+1).
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