12 lines
187 B
Haskell
12 lines
187 B
Haskell
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module Data.Foo where
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foo :: Int
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foo = undefined
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fibonacci :: Int -> Integer
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fibonacci n = fib 1 0 1
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where
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fib m x y
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| n == m = y
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| otherwise = fib (m+1) y (x + y)
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