public void LargestNumber_1()
        {
            var solution = new _0179_LargestNumber();
            var result   = solution.LargestNumber(new int[] { 10, 2 });

            Assert.AreEqual("210", result);
        }
        public void LargestNumber_2()
        {
            var solution = new _0179_LargestNumber();
            var result   = solution.LargestNumber(new int[] { 3, 30, 34, 5, 9 });

            Assert.AreEqual("9534330", result);
        }