Or more succinctly: 
my @array1 = (1,2,3);
my @array2 = (7,8);
my @array3 = (1,5,23,3);

$" = ',';
print "$_ " while glob "{@array1}-{@array2}-{@array3}";

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In reply to Re^2: finding all combinations by jwkrahn
in thread finding all combinations by Anonymous Monk

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