joachim/racket-random
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joachimschmidt557 2020-01-29 16:30:13 +01:00
parent fbdc710918
commit 7bbf3a5070
5 changed files with 57 additions and 1 deletions
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ack.rkt Normal file
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;; The first three lines of this file were inserted by DrRacket. They record metadata
;; about the language level of this file in a form that our tools can easily process.
#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)))
(define (ack n m)
(cond [(= 0 n) (+ m 1)]
[(= 0 m) (ack (- n 1) 1)]
[else (ack (- n 1) (ack n (- m 1)))]))