public void RacecarTest_1()
        {
            var solution = new _0818_RaceCar();
            var result   = solution.Racecar(1);

            Assert.AreEqual(1, result);
        }
        public void RacecarTest_30()
        {
            var solution = new _0818_RaceCar();

            Assert.AreEqual(7, solution.Racecar(30));
        }
        public void RacecarTest_15()
        {
            var solution = new _0818_RaceCar();

            Assert.AreEqual(4, solution.Racecar(15));
        }
        public void RacecarTest_8()
        {
            var solution = new _0818_RaceCar();

            Assert.AreEqual(6, solution.Racecar(8));
        }