public void QueueUsingTwoStacksTest(string[] arrInput, string expected)
        {
            string result = StacksAndQueuesSample.QueueUsingTwoStacks(arrInput);

            Assert.AreEqual(result, expected);
        }
        public void IsBalancedBracketsTest(string str, bool expected)
        {
            bool result = StacksAndQueuesSample.IsBalancedBrackets(str);

            Assert.AreEqual(result, expected);
        }