ArrayList的简单练习

public static void getList()
        {
            //写一个长度为10 的集合，要求里面存放10个随机数（0-9）
            //要求数字不能重复
            Random rd = new Random();
            ArrayList list = new ArrayList();
            for (int i = 0; i < 10; i++)
            {
                int number = rd.Next(0,10);
                if (!list.Contains(number))
                {
                    list.Add(number);
                }
                else
                {
                    i--;
                }
            }
            for (int i = 0; i < 10; i++)
            {
                Console.WriteLine(list[i]);
            }
            Console.ReadLine();
        }