c#复习-2

Posted 2020-07-26 右掱写爱

输入三个学生的信息
学号、姓名、分数
从大到小排序
 1 using System;
 2 using System.Collections;
 3 using System.Collections.Generic;
 4 using System.Linq;
 5 using System.Text;
 6 
 7 namespace 复习CS
 8 {
 9     class Program
10     {
11         struct Student
12         {
13             public int num;
14             public string Code;
15             public string Name;
16             public decimal Score;
17         }
18 
19         static void Main(string[] args)
20         {
21             //1、循环添加学生信息
22             ArrayList list = new ArrayList();
23 
24             for (int i = 1; i < 4; i++)
25             {
26                 Student s = new Student(); //实例化
27 
28                 Console.Write("请输入第" + i + "个学生的学号：");
29                 s.Code = Console.ReadLine();
30                 Console.Write("请输入第" + i + "个学生的姓名：");
31                 s.Name = Console.ReadLine();
32                 Console.Write("请输入第" + i + "个学生的成绩：");
33                 s.Score = Convert.ToDecimal(Console.ReadLine());
34                 s.num = i;
35 
36                 list.Add(s);
37                 Console.WriteLine("===============================");
38             }
39 
40             Console.WriteLine("-----------------------学生数据展示--------------------------");
41 
42             //2、排序
43 
44             for (int i = 0; i < list.Count - 1; i++)
45             {
46                 for (int j = i + 1; j < list.Count; j++)
47                 {
48                     Student s1 = (Student)list[i];
49                     Student s2 = (Student)list[j];
50 
51                     if (s1.Score < s2.Score)
52                     {
53                         Object ob = list[i];
54                         list[i] = list[j];
55                         list[j] = ob;
56                     }
57                 }
58             }
59 
60             //3、打印
61             foreach (object o in list)
62             {
63                 Student ss = (Student)o;
64                 Console.WriteLine("第" + ss.num + "个学生的学号：" + ss.Code + "，姓名：" + ss.Name + "，分数：" + ss.Score + "。");
65             }
66 
67 
68 
69             Console.ReadKey();
70         }
71     }
72 }