Permutations: Difference between revisions
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DoPermutations(aList, n - 1) |
DoPermutations(aList, n - 1) |
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if n mod 2 = 0 then -- n is even |
if n mod 2 = 0 then -- n is even |
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tell aList to set [item i, item n] to [item n, item i] -- swap |
tell aList to set [item i, item n] to [item n, item i] -- swap items i and n of aList |
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else |
else |
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tell aList to set [item 1, item n] to [item n, item 1] -- swap |
tell aList to set [item 1, item n] to [item n, item 1] -- swap items 1 and n of aList |
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end if |
end if |
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set i to i + 1 |
set i to i + 1 |
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