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a3e1b1ce7e
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11439 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
7 lines
139 B
Scheme
7 lines
139 B
Scheme
(define (ack m n)
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(cond ((zero? m) (+ n 1))
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((zero? n) (ack (- m 1) 1))
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(else (ack (- m 1) (ack m (- n 1))))))
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(ack 3 9)
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