Haskell - Various factorials P32333


Statement
 

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Write 8 essentially diferent functions that compute the factorial of a natural number in Haskell. You can use recursion, final recursion, no recursion, guards, if then else, map, folds, infinite lists...

Specification

You should define the following functions:

fact1 :: Integer -> Integer fact2 :: Integer -> Integer fact3 :: Integer -> Integer fact4 :: Integer -> Integer fact5 :: Integer -> Integer fact6 :: Integer -> Integer fact7 :: Integer -> Integer fact8 :: Integer -> Integer
Public test cases

  • Input

    fact1 6
fact2 6
fact3 6
fact4 6
fact5 6
fact6 6
fact7 6
fact8 6
fact1 20

    Output

    720
720
720
720
720
720
720
720
2432902008176640000
    • Information
    Author
    Jordi Petit
    Language
    English
    Translator
    Jordi Petit
    Original language
    Catalan
    Other languages
    Catalan
    Official solutions
    Haskell
    User solutions
    Haskell