public void Problem9_solution1_BasicInput2()
        {
            var sut    = new Problem9_solution1();
            var input  = new int[] { 5, 1, 1, 5 };
            var result = sut.solve(input);

            Assert.AreEqual(10, result);
        }
        public void Problem9_solution1_BasicInput()
        {
            var sut    = new Problem9_solution1();
            var input  = new int[] { 1, 2, 3, 4, 5 };
            var result = sut.solve(input);

            Assert.AreEqual(9, result);
        }
        public void Problem9_solution1_BasicInput1()
        {
            var sut    = new Problem9_solution1();
            var input  = new int[] { 2, 4, 6, 8 };
            var result = sut.solve(input);

            Assert.AreEqual(12, result);
        }