using System;using System.Collections;using System.Collections.Generic;using System.Linq;using System.Text;namespace 复习CS_冒泡排序{    class Program    {         /// 
         /// 题目：         /// 添加5个学生的信息到集合中，         /// 每个学生都有：学号，姓名，成绩，3个内容，         /// 添加完毕后将学生的分数从高到低排列并打印出来         /// 
        struct Student        {            public int num;            public string Code;            public string Name;            public decimal Score;        }        static void Main(string[] args)        {            //1、循环添加学生信息            ArrayList list = new ArrayList();            for (int i = 1; i < 4; i++)            {                Student s = new Student(); //实例化                Console.Write("请输入第" + i + "个学生的学号：");                s.Code = Console.ReadLine();                Console.Write("请输入第" + i + "个学生的姓名：");                s.Name = Console.ReadLine();                Console.Write("请输入第" + i + "个学生的成绩：");                s.Score = Convert.ToDecimal(Console.ReadLine());                s.num = i;                list.Add(s);                Console.WriteLine("===============================");            }            Console.WriteLine("-----------------------学生数据展示--------------------------");            //2、排序            for (int i = 0; i < list.Count - 1; i++)            {                for (int j = i + 1; j < list.Count; j++)                {                    Student s1 = (Student)list[i];                    Student s2 = (Student)list[j];                    if (s1.Score < s2.Score)                    {                        Object ob = list[i];                        list[i] = list[j];                        list[j] = ob;                    }                }            }            //3、打印            foreach (object o in list)            {                Student ss = (Student)o;                Console.WriteLine                    ("第" + ss.num + "个学生的学号：" +                             ss.Code + "，姓名：" +                             ss.Name + "，分数：" +                             ss.Score + "。");            }            Console.ReadKey();        }    }}