this post was submitted on 02 Oct 2023
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[–] Knusper@feddit.de 9 points 2 years ago
hanoi :: Integer -> a -> a -> a -> [(a, a)]
hanoi 0 _ _ _ = []
hanoi n a b c = hanoi (n-1) a c b ++ [(a, b)] ++ hanoi (n-1) c b a

From here: https://www.rosettacode.org/wiki/Towers_of_Hanoi#Haskell