Permutations/Derangements: Difference between revisions
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{{trans|Perl}} |
{{trans|Perl}} |
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{{works with|Rakudo|2016.10}} |
{{works with|Rakudo|2016.10}} |
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<lang perl6> |
<lang perl6>sub derangements(@l) { |
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sub derangements(@l) { |
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permutations(@l).grep(-> @p { none(@p Zeqv @l) }) |
permutations(@l).grep(-> @p { none(@p Zeqv @l) }) |
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} |
} |
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for 0 .. 9 -> $n { |
for 0 .. 9 -> $n { |
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say "!$n == { !$n }" |
say "!$n == { !$n }" |
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| ⚫ | |||
} |
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| ⚫ | |||
{{out}} |
{{out}} |
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<pre> |
<pre> |
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