Created
June 9, 2020 06:32
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| module Exercicios4 where | |
| -- 1 | |
| media :: [Double] -> Double | |
| media z = (foldl (\x y -> x + y) 0 z) | |
| -- 2 | |
| pares :: [Int] -> [Int] | |
| pares x = filter (\y -> mod y 2 == 0) x | |
| impares :: [Int] -> [Int] | |
| impares x = filter (\y -> mod y 2 /= 0) x | |
| -- 3 | |
| data Correncia = Real | Dolar deriving (Show, Eq) | |
| data Dinheiro = Dinheiro { | |
| valor :: Double, | |
| correncia :: Correncia | |
| } deriving Show | |
| converte :: Dinheiro -> Double | |
| converte (Dinheiro x Real) = x * 4.82 | |
| convete (Dinheiro x Dolar) = x / 4.82 | |
| filtraDolar :: [Dinheiro] -> [Dinheiro] | |
| filtraDolar z = filter(\(Dinheiro x y) -> y == Dolar) z | |
| somaDolares :: [Dinheiro] -> Double | |
| somaDolares x = foldl (\z (Dinheiro a b)-> a + z) 0 (filtraDolar x) |
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