RosettaCodeData/Task/Knuth-shuffle/PicoLisp/knuth-shuffle.l
2018-06-22 20:57:24 +00:00

11 lines
244 B
Text

(seed (in "/dev/urandom" (rd 8)))
(de knuth (Lst)
(for (N (length Lst) (>= N 2) (dec N))
(let I (rand 1 N)
(xchg (nth Lst N) (nth Lst I)) ) ) )
(let L (range 1 15)
(println 'before L)
(knuth L)
(println 'after L) )