成绩表

 1 import java.util.Scanner;//导入
 2 
 3 public class chengji {
 4 
 5     public static void main(String[] args) {
 6         
 7         int rs=0;
 8         Scanner arr=new Scanner(System.in);//初始化扫描器
 9         
10         System.out.println("请输入班级人数：");
11         
12         rs=arr.nextInt();//接受，等待输入，回车结束，返回字符串
13          
14         double c[]=new double [rs];//rs数组长度
15         
16         System.out.println("请输入成绩：");
17         
18         Scanner ar=new Scanner(System.in);
19         
20         double sum =0;
21         for (int i=0;i<c.length;i++)
22         {
23             c[i]=ar.nextDouble();//接受扫描数据
24             
25             sum+=c[i]; 
26         }
27         System.out.println("成绩总和："+sum);
28         
29         for (int j=0; j<c.length;j++)
30             for(int i=0;i<c.length-1-j;i++){
31                 if(c[i]>c[i+1]){
32                     double x=c[i];
33                             c[i]=c[i+1];
34                             c[i+1]=c[i];
35                 }
36                 
37             }
38         System.out.println("输出最高成绩："+c[c.length-1]);
39         
40         System.out.println("输出最低成绩："+c[0]);
41         
42         System.out.println("输出平均成绩："+sum/c.length);
43     }
44     
45 
46 }