public void UltimoCaracter()
        {
            int size = 3;

            char[] arr = { 'a', 'b', 'c' };
            InvertirArreglos.InverirCaracteres(arr, size);
            Assert.AreEqual('a', arr[2]);
        }
        public void CaracterEnmedio()
        {
            int size = 3;

            char[] arr = { 'a', 'b', 'c' };
            InvertirArreglos.InverirCaracteres(arr, size);
            Assert.AreEqual('b', arr[1]);
        }
        public void SwapTest()
        {
            char x = 'a';
            char y = 'b';

            InvertirArreglos.Swap(ref x, ref y);
            Assert.AreEqual(x, 'b');
            Assert.AreEqual(y, 'a');
        }