小题目一道帮帮忙

zrmzhang 2010-04-24 01:32:36

编写出java程序

要求:学生有若干门学科每门学科有若干次考试

将考试分数相加的总分评估等第

学科评估标准如下:
低于50 NN
50 - 59 PA
60 - 69 CR
70 - 79 DI
80 - 100 HD

执行的时候会先要求输入有几门学科
然后输入学科1的考试数量
然后依次输入各次考试的分数
最后总分评估出等级

在输入学科2的考试次数
然后依次输入各次考试的分数
最后总分评估出等级

最后算出学科1和学科2的平均分

例如:
Welcome to the student course admin
How many subjects are there?: 2

Collecting information for subject 0
How many assessments are there for this subject?: 2
Please enter assessment mark: 5
Please enter assessment mark: 60
Subject Mark: 65 - CR

Collecting information for subject 1
How many assessments are there for this subject?: 3
Please enter assessment mark: 10
Please enter assessment mark: 25
Please enter assessment mark: 40
Subject Mark: 75 - DI

Student Average Mark is 70

文件名为course.java
最好使用到evaluate(),getValidNum(),printMarkGrade()
调用函数evaluateSubject()

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麦穗 2010-04-30

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这个还是自己多谢谢~~！

zqfddqr 2010-04-30

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.................................

sqcyg 2010-04-28

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书上有类似的例题吧依葫芦画瓢

liu_liyang 2010-04-28

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菜鸟关注一下

zhuyouyong 2010-04-28

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顶[Quote=引用 7 楼 mars_ma_ok 的回复:]
勤快的啦..现在辛苦将来就舒服啦!!!
[/Quote]

zrmzhang 2010-04-28

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import java.util.Scanner;



public class Course

{   

  private static Scanner sc; 

 public static void main(String []args)

 {

  System.out.print("How many subjects are there：");

  int[][]subjectnum=new int[getsubjectnum()][];

  int[]average=new int[subjectnum.length];

  for(int i=0;i<subjectnum.length;++i)

  {

   System.out.print("For Subject"+(i+1)+" How many assessments are there:");

   Scanner  sc=getsc();

   int a=sc.nextInt();

   subjectnum[i]=new int[a];

   System.out.print("For Subject"+(i+1)+" plesae enter the assessments the following\n");

   average[i]=kaoping(subjectnum[i].length,i+1);

   System.out.println("For Subject"+(i+1)+" average mark is:"+average[i]+"\n");

  }

  System.out.print("There are the average mark for all subject\n");

  for(int i=0;i<average.length;++i)

   System.out.print("Subject"+(i+1)+"'s average mark is:"+average[i]+"\n");

  System.out.println("The average mark for all subject is:"+addsorce(average));

 }

   static int getsubjectnum()

   {   

    Scanner sc=getsc();

    int a=sc.nextInt();

    return a;

   }

   static Scanner getsc()

   {

    if(sc==null){sc=new Scanner(System.in);return sc;}

    else return sc;

   }

   static int kaoping(int n,int j)

   {

    int sum=0,ave;

    Scanner sc=getsc();

    for(int i=0;i<n;++i)

    {

     System.out.print("Please enter subject"+j+"'s No."+(i+1)+"'s assessment mark:");

     sum+=sc.nextInt();

    }

    ave=sum/n;

    switch(ave/10)

    {

    case 8:System.out.print("The sorce is HD\n");break;

    case 7:System.out.print("The sorce is DI\n");break;

    case 6:System.out.print("The sorce is HD\n");break;

    case 5:System.out.print("The sorce is CR\n");break;

    default:System.out.print("The sorce is NN\n");break;

    }

    return ave;

   }

   static float addsorce(int[]a)

   {

    int sum=0;

    for(int i=0;i<a.length;sum+=a[i],++i);

    return sum/a.length;

   }

}