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'derangementTest' too simple (returns false positive) #2

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BertLisser opened this issue Sep 24, 2018 · 0 comments
Open

'derangementTest' too simple (returns false positive) #2

BertLisser opened this issue Sep 24, 2018 · 0 comments

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@BertLisser
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derangementTest :: Int -> Property
derangementTest n = (n >= 2 && n <= 7) ==> length (deran [1..n]) == subfact n

counts only the number of derangements and doesn't look at the content
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@BertLisser