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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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13
Task/Quickselect-algorithm/Common-Lisp/quickselect-algorithm.lisp Normal file
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(defun quickselect (n _list)
(let* ((ys (remove-if (lambda (x) (< (car _list) x)) (cdr _list)))
(zs (remove-if-not (lambda (x) (< (car _list) x)) (cdr _list)))
(l (length ys))
)
(cond ((< n l) (quickselect n ys))
((> n l) (quickselect (- n l 1) zs))
(t (car _list)))
)
)
(defparameter a '(9 8 7 6 5 0 1 2 3 4))
(format t "~a~&" (mapcar (lambda (x) (quickselect x a)) (loop for i from 0 below (length a) collect i)))