Get all permutations of a list in Haskell

Question

I\'m trying to do this from scratch, without the use of a library outside the standard lib. Heres my code:

permutations :: [a] -> [[a]]
permutations (x:xs         


        

Answer 1

It's already in the standard base library, so no need to struggle. If you really want to see how to do it, you can look at the source of that library.