public void AppearanceCountIfCheckNumberIsInArray()
        {
            int[] arr      = { 1, 1, 1, 1, 2, 2, 2, 8, 9, 9, 9, 9, 9 };
            int   numCheck = 9;
            int   actual   = AppearanceCountApp.AppearanceCount(arr, numCheck);
            int   expected = 5;

            Assert.AreEqual(expected, actual);
        }
        public void AppearanceCountIfCheckNumberIsNegative()
        {
            int[] arr      = { 1, 1, 1, 1, -3, 2, 2, 2, 8, -3, 9, 9, 9, -3, 9, 9 };
            int   numCheck = -3;
            int   actual   = AppearanceCountApp.AppearanceCount(arr, numCheck);
            int   expected = 3;

            Assert.AreEqual(expected, actual);
        }