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What Does This Haskell Function Do? - Click Quiz
You are given the definitions of 10 different Haskell functions. Try to match each one with what it does.
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Last updated: December 6, 2023
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| First submitted | December 6, 2023 |
| Times taken | 34 |
| Average score | 70.0% | Report this quiz | Report |
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f :: [Int] -> Int
f [] = 0
f (x:xs) | odd x = x + f xs
| otherwise = f xs
f :: Int -> String
f 0 = "0"
f 1 = "1"
f n = f (n `div` 2) ++ f (n `mod` 2)
f :: String -> String
f [] = []
f (x:xs) | isUpper x = x : f xs
| otherwise = f xs
f :: Int -> Int -> Maybe Int
f _ 0 = Nothing
f x y = Just (x `div` y)
f :: Int -> Int
f 0 = 1
f n = n * f (n-1)
f :: Eq a => [a] -> a -> Int
f [] _ = 0
f (x:xs) y | y == x = 1 + f xs y
| otherwise = f xs y
f :: [Int] -> [Int]
f = map (*10)
f :: Int -> Int
f 1 = 1
f 2 = 1
f n = f (n-1) + f (n-2)
f :: Int -> [Int]
f x = [y | y <- [1..x], x `mod` y == 0]
f :: [Int] -> Int
f [] = 0
f (x:xs) | even x = x + f xs
| otherwise = f xs
Computes all the factors of an integer
Computes any number in the Fibonacci sequence
Computes the factorial of a number
Computes the sum of all even numbers in a list of integers
Computes the sum of all odd numbers in a list of integers
Counts the number of occurrences of a value in a list
Discards all chars in a string that aren't uppercase letters
Multiplies every element in a list of integers by 10
Performs integer division, with a check for division by zero
Returns the binary representation of a number
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