public void Test_Generic(int n, string[] expected)
{
var sol = new Solution();
var res = sol.GenerateParenthesis(n);
CollectionAssert.AreEquivalent(res, expected);
}
static void Main(string[] args)
{
var s = new Solution();
foreach (var item in s.GenerateParenthesis(3))
{
Console.WriteLine(item);
}
}