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7 lines
222 B
Plaintext
7 lines
222 B
Plaintext
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-- tail recursion: Fibonacci numbers in linear time
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def fib' : Int -> Int -> Int -> Int := \(n : Int) \(x : Int) \(y : Int) if n = 0 then x else fib' (n - 1) y (x + y);
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def fib : Int -> Int := \(n : Int) fib' n 0 1;
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fib
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