Factorial: Difference between revisions
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=={{header|Coq}}== |
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<syntaxhighlight lang="coq"> |
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Fixpoint factorial (n : nat) : nat := |
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match n with |
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| 0 => 1 |
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| S k => (S k) * (factorial k) |
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end. |
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</syntaxhighlight> |
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=={{header|Crystal}}== |
=={{header|Crystal}}== |
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