练习、C# 结构体、冒泡排序

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
    {
         /// <summary>
         /// 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
         /// </summary>
        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();

        }
    }
}