public void Test()
{
var l1 = new List <int> {
9, 9, 9, 9, 9, 9, 9
};
var l2 = new List <int> {
9, 9, 9, 9
};
var sol = new _0002_Add_Two_Numbers.Solution();
var list = sol.AddTwoNumbers(ListNode.BuildList(l1), ListNode.BuildList(l2));
var ret = ListNode.Output(list);
}
