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Task/Fibonacci-sequence/Hope/fibonacci-sequence-1.hope
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Task/Fibonacci-sequence/Hope/fibonacci-sequence-1.hope
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@ -0,0 +1,4 @@
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dec f : num -> num;
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--- f 0 <= 0;
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--- f 1 <= 1;
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--- f(n+2) <= f n + f(n+1);
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Task/Fibonacci-sequence/Hope/fibonacci-sequence-2.hope
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Task/Fibonacci-sequence/Hope/fibonacci-sequence-2.hope
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dec fib : num -> num;
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--- fib n <= l (1, 0, n)
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whererec l == \(a,b,succ c) => if c<1 then a else l((a+b),a,c)
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|(a,b,0) => 0;
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Task/Fibonacci-sequence/Hope/fibonacci-sequence-3.hope
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Task/Fibonacci-sequence/Hope/fibonacci-sequence-3.hope
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dec fibs : list num;
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--- fibs <= fs whererec fs == 0::1::map (+) (tail fs||fs);
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