Lab3 Rudnevskiy #10
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Lab3 Rudnevskiy #10
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alexeyr
reviewed
Jun 25, 2024
| (==) = undefined | ||
| (==) (P a) (P b) = checkNull a == checkNull b where | ||
| checkNull [] = [] | ||
| checkNull lst = if (last lst == 0) then checkNull (init lst) else lst |
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Это очень неэффективная реализация из-за медленных last и init, но ладно.
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| it "xor" $ do | ||
| xor True True `shouldBe` False | ||
| xor True False `shouldBe` True | ||
| xor False True `shouldBe` True | ||
| xor False False `shouldBe` False | ||
| it "geomProgression" $ do | ||
| geomProgression 5.0 0.5 2 `shouldBe` 1.25 | ||
| geomProgression 5.0 2.0 3 `shouldBe` 40.0 |
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Функции добавили и QuickCheck раскомментировали, но тесты-то без QuickCheck! Из-за своей задержки я поставлю полный балл с возможностью его увеличить, добавив тесты в QuickCheck.
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| {- -O0: Total time: ??? Total Memory in use: ??? -} | ||
| {- -O2: Total time: ??? Total Memory in use: ??? -} | ||
| minMax = undefined | ||
| minMax [] = Nothing | ||
| minMax (x:xs) = Just (foldl update (x, x) xs) where | ||
| update (minVal, maxVal) current = (min minVal current, max maxVal current) | ||
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| -- Дополнительное задание: реализуйте ту же самую функцию (под названием minMaxBang) с | ||
| -- использованием явной строгости (seq и/или !) | ||
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| {- -O0: Total time: ??? Total Memory in use: ??? -} | ||
| {- -O2: Total time: ??? Total Memory in use: ??? -} | ||
| minMaxBang = undefined | ||
| minMaxBang [] = Nothing | ||
| minMaxBang (x:xs) = Just (foldl (\(mn, mx) y -> (min mn y, max mx y)) (x, x) xs) |
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Это та же реализация, что выше, только с другими названиями переменных, без seq и без !.
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Тут замечания есть, но я поставлю полные баллы за 2 и 3 лабораторные, и при исправлении можно ещё увеличить. |
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