public void FindLucky_1()
        {
            var solution = new _1394_FindLuckyIntegerInAnArray();
            var result   = solution.FindLucky(new int[] { 2, 2, 3, 4 });

            Assert.AreEqual(2, result);
        }
        public void FindLucky_5()
        {
            var solution = new _1394_FindLuckyIntegerInAnArray();
            var result   = solution.FindLucky(new int[] { 7, 7, 7, 7, 7, 7, 7 });

            Assert.AreEqual(7, result);
        }