输入班级人数，姓名，分数，创建集合，并按照表格样式打印出来

 Console.Write("请输入班级人数：");
            int n = int.Parse(Console.ReadLine());
            //创建集合
            ArrayList banji = new ArrayList();
            for (int i = 0; i < n;i++ )
            {
                Console.Write("请输入"+(i+1)+"姓名：");
                banji.Add((string)Console.ReadLine());
                Console.Write("请输入" + (i + 1) + "成绩：");
                banji.Add(double.Parse(Console.ReadLine()));
            }
            //按照表格打印出来
            Console.WriteLine("班级成绩表");
            for (int k = 0; k < 2*n; k=k+2)
            {
                Console.WriteLine(banji[k] + "\t" + banji[k+1]);
            }

            Console.ReadLine();