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Permutations: Difference between revisions
Lua
(Added demo code second D version) |
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[3,2,1]
yes</lang>
=={{header|Lua}}==
<lang lua>
local function permutation(a, n)
if n == 0 then
print('{'..table.concat(a, ', ')..'}')
else
for i = 1, n do
a[i], a[n] = a[n], a[i]
permutation(a, n - 1)
a[i], a[n] = a[n], a[i]
end
end
end
permutation({1,2,3}, 3)
-- {2, 3, 1}
-- {3, 2, 1}
-- {3, 1, 2}
-- {1, 3, 2}
-- {2, 1, 3}
-- {1, 2, 3}
</lang>
=={{header|Mathematica}}==
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