RosettaCodeData/Task/Sailors-coconuts-and-a-monkey-problem/Racket/sailors-coconuts-and-a-monkey-problem.rkt
2023-07-01 13:44:08 -04:00

25 lines
869 B
Racket

#lang racket
(define (wake-and-split nuts sailors depth wakes)
(define-values (portion remainder) (quotient/remainder nuts sailors))
(define monkey (if (zero? depth) 0 1))
(define new-wakes (cons (list nuts portion remainder) wakes))
(and (positive? portion)
(= remainder monkey)
(if (zero? depth)
new-wakes
(wake-and-split (- nuts portion remainder) sailors (sub1 depth) new-wakes))))
(define (sleep-and-split nuts sailors)
(wake-and-split nuts sailors sailors '()))
(define (monkey_coconuts (sailors 5))
(let loop ([nuts sailors])
(or (sleep-and-split nuts sailors)
(loop (add1 nuts)))))
(for ([sailors (in-range 5 7)])
(define wakes (monkey_coconuts sailors))
(printf "For ~a sailors the initial nut count is ~a\n" sailors (first (last wakes)))
(map displayln (reverse wakes))
(newline))