2023-07-01 11:58:00 -04:00
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func permutations(callback, set, perm=[]) {
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2023-12-16 21:33:55 -08:00
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set || callback(perm)
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2023-07-01 11:58:00 -04:00
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for i in ^set {
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__FUNC__(callback, [
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2023-12-16 21:33:55 -08:00
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set[^i, i+1 ..^ set.len]
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2023-07-01 11:58:00 -04:00
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], [perm..., set[i]])
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}
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return()
|
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}
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permutations({|p| say p }, [0,1,2])
|
