public void Test1(string str)
        {
            var result = FindIntersectionService.ParseInput(str);

            Assert.Equal("1", result.ElementAt(0));
            Assert.Equal("3", result.ElementAt(1));
        }
        public void FindIntersection(string str1, string str2, string expected)
        {
            string[] input = new string[2] {
                str1, str2
            };

            var result = FindIntersectionService.FindIntersection(input);

            Assert.Equal(expected, result);
            List <string> stringE = new List <string>();

            stringE.Add("abc");
            stringE.Add("bcd");
            var test = stringE.ToString();

            Console.WriteLine(test);
        }