19 lines
436 B
Racket
19 lines
436 B
Racket
#lang plai/gc2/mutator
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(allocator-setup "../good-collectors/good-collector.rkt" 68)
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(define (length-accum lst len)
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(if (empty? lst)
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len
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(length-accum (rest lst) (+ 1 len))))
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(define (length lst)
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(length-accum lst 0))
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(define (fact/acc n a)
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(if (zero? n)
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a
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(fact/acc (- n 1) (* n a))))
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(test/value=? (length '(1 2 3 4)) 4)
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(test/value=? (fact/acc 40 1) 815915283247897734345611269596115894272000000000)
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