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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
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Task/Sorting-algorithms-Pancake-sort/Racket/sorting-algorithms-pancake-sort.rkt Normal file
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#lang racket
(define (pancake-sort l)
(define (flip l n) (append (reverse (take l n)) (drop l n)))
(for/fold ([l l]) ([i (in-range (length l) 1 -1)])
(let* ([i2 (cdr (for/fold ([m #f]) ([x l] [j i])
(if (and m (<= x (car m))) m (cons x j))))]
[l (if (zero? i2) l (flip l (add1 i2)))])
(flip l i))))
(pancake-sort (shuffle (range 0 10)))
;; => '(0 1 2 3 4 5 6 7 8 9)