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14 lines
187 B
Scheme
14 lines
187 B
Scheme
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(define (fact-helper x res)
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(if (= x 0)
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res
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(fact-helper (- x 1) (* res x))))
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(define (fact x)
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(fact-helper x 1))
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(display "(fact 3) => ")
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(write (fact 3))
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(newline)
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