7 lines
No EOL
470 B
Racket
7 lines
No EOL
470 B
Racket
;; The first three lines of this file were inserted by DrRacket. They record metadata
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;; about the language level of this file in a form that our tools can easily process.
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#reader(lib "htdp-advanced-reader.ss" "lang")((modname ack) (read-case-sensitive #t) (teachpacks ()) (htdp-settings #(#t constructor repeating-decimal #t #t none #f () #f)))
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(define (ack n m)
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(cond [(= 0 n) (+ m 1)]
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[(= 0 m) (ack (- n 1) 1)]
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[else (ack (- n 1) (ack n (- m 1)))])) |