RosettaCodeData/Task/Permutations-Derangements/Jq/permutations-derangements-2.jq
2017-09-25 22:28:19 +02:00

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Text

"Derangements:",
([range(1;5)] | derangements),
"",
"Counted vs Computed Derangments:",
(range(1;10) as $i | "\($i): \(count( [range(0;$i)] | derangements)) vs \($i|subfact)"),
"",
"Computed approximation to !20 (15 significant digits): \(20|subfact)"