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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
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commit f23f22d71c
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Task/Fibonacci-sequence/Haskell/fibonacci-sequence-8.hs Normal file
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{-# Language LambdaCase #-}
import Data.MemoTrie
fib :: Integer -> Integer
fib = memo $ \case
0 -> 0
1 -> 1
n | n>0 -> fib (n-1) + fib (n-2)
| otherwise -> fib (n+2) - fib (n+1)