public void ReverseTest()
        {
            var q = new ArrayQ();

            Assert.AreEqual(q.Reverse(1), 1);
            Assert.AreEqual(q.Reverse(-1), -1);
            Assert.AreEqual(q.Reverse(12), 21);
            Assert.AreEqual(q.Reverse(123), 321);
            Assert.AreEqual(q.Reverse(-123), -321);
            Assert.AreEqual(q.Reverse(120), 21);
            Assert.AreEqual(q.Reverse(1534236469), 0);
        }