RosettaCodeData/Task/Ackermann-function/Racket/ackermann-function.rkt

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Racket
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2013-04-10 12:38:42 -07:00
#lang racket
(define (ackermann m n)
(cond [(zero? m) (add1 n)]
2013-06-05 21:47:54 +00:00
[(zero? n) (ackermann (sub1 m) 1)]
[else (ackermann (sub1 m) (ackermann m (sub1 n)))]))