输出重复元素和不重复元素

 //输出重复的元素
        public static void ArrayDuplicate(int[] array1)
        {
            //string[] array1 = new string[] { "7ss", "4s", "7g", "1a","4g", "1e", "5e", "2a", "5e" };

            ArrayList list1 = new ArrayList(); //储存去重后剩余的元素
            ArrayList list2 = new ArrayList(); //储存重复的元素
            for (int i = 0; i < array1.Length; i++)
            {
                if (!list1.Contains(array1[i]))
                    list1.Add(array1[i]);    //添加第一次出现的元素
                else
                    list2.Add(array1[i]);    //添加重复的元素
            }
            foreach (int i in list1)
            {
                Console.WriteLine(i);
            }
            Console.WriteLine("duplicate");
            foreach (int i in list2)
            {
                Console.WriteLine(i);
            }
        }
        //输出不重复的元素
        public static void ArrayNoDuplicate(int[] array1)
        {
            //string[] array1 = new string[] { "7ss", "4s", "7g", "1a","4g", "1e", "5e", "2a", "5e" };

            ArrayList list1 = new ArrayList(); //储存去重后剩余的元素
            ArrayList list2 = new ArrayList(); //储存重复的元素
            for (int i = 0; i < array1.Length; i++)
            {
                if (!list1.Contains(array1[i]))
                    list1.Add(array1[i]);    //添加第一次出现的元素
                else
                {
                    list1.Remove(array1[i]);
                    list2.Add(array1[i]);    //添加重复的元素
                }
            }
            foreach (int i in list1)
            {
                Console.WriteLine(i);
            }
            Console.WriteLine("duplicate");
            foreach (int i in list2)
            {
                Console.WriteLine(i);
            }
        }