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16 lines
449 B
16 lines
449 B
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Exercise 5.34: Compile the iterative factorial
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procedure
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(define (factorial n)
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(define (iter product counter)
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(if (> counter n)
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product
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(iter (* counter product)
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(+ counter 1))))
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(iter 1 1))
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Annotate the resulting code, showing the essential difference between the code
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for iterative and recursive versions of factorial that makes one process
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build up stack space and the other run in constant stack space.
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