public void ReverseStringInPlace_SeussInput_CharReversalSucceeds()
        {
            string input = "the cat in the hat";
            char[] inputArray = input.ToCharArray();
            var so = new StringOps();
            so.ReverseStringInPlace(inputArray, 0, inputArray.Length);
            string output = new string(inputArray);

            Assert.AreEqual(output, "tah eht ni tac eht");
        }
        public void ReverseWordsInSentenceInPlace_SeussInput_WordReversalSucceeds()
        {
            string input = "the cat in the hat";
            char[] inputArray = input.ToCharArray();
            int len = inputArray.Length;
            var so = new StringOps();
            so.ReverseStringInPlace(inputArray, 0, len);
            so.ReverseWordsInSentenceInPlace(inputArray, len);
            string output = new string(inputArray);

            Assert.AreEqual(output, "hat the in cat the");
        }