Permutations by swapping: Difference between revisions

Nimrod -> Nim
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(Nimrod -> Nim)
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Perm: {2,1,3,4} Sign: -1</pre>
 
=={{header|NimrodNim}}==
<lang nimrodnim># iterative Boothroyd method
iterator permutations*[T](ys: openarray[T]): tuple[perm: seq[T], sign: int] =
var
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