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Ingy döt Net 2023-07-01 11:58:00 -04:00
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12
Task/Knuth-shuffle/Joy/knuth-shuffle-1.joy Normal file
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DEFINE knuth-shuffle ==
(* Take the size of the array (without destroying it) *)
dup dup size
(* Generate a list of as many random numbers *)
[rand] [rem] enconcat map
(* Zip the two lists *)
swap zip
(* Sort according to the new index number *)
[small] [] [uncons unswonsd [first >] split [swons] dip2]
[enconcat] binrec
(* Delete the new index number *)
[second] map.

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Task/Knuth-shuffle/Joy/knuth-shuffle-2.joy Normal file
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(* Sorted array of 21 integers *)
[ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20]
knuth-shuffle.