For something a bit different calculate the gcd (although doing Euclid's algorithm is more expensive?). https://haskell.godbolt.org/z/m7IY8U https://haskell.go

For something a bit different calculate the gcd (although doing Euclid's algorithm is more expensive?). https://haskell.godbolt.org/z/m7IY8U https://haskell.godbolt.org/z/m7IY8U.