C# Permutation of an array of arraylists?

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I’m surprised nobody posted the LINQ solution.

from val0 in new []{ "1", "5", "3", "9" }
from val1 in new []{ "2", "3" }
from val2 in new []{ "93" }
select String.Format("val0={0};val1={1};val2={2}", val0, val1, val2)

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