分析成绩 Exercise07_04

 import java.util.Scanner;
 /**
  * @author 冰樱梦
  * 时间：2018年下半年
  * 题目：分析成绩
  *
  */
 public class Exercise07_04 {
     public static void main(String[] args){
         int higher=0,equal=0,lower=0,sum=0;
         double average,total=0,num;
         double[] grade=new double[101];
         Scanner input=new Scanner(System.in);
         System.out.println("输入考试分数，以负数结束");
         while(true){
             num=input.nextInt();
             if(num<0) break;
             sum++;
             grade[(int) num]=num;
         }
         for(int i=0;i<grade.length;i++){
             total+=grade[i];
         }
         average=total/sum;
         for(int i=0;i<101;i++){
             if((grade[i]!=0) && (grade[i]<average)) lower++;
             if(grade[i]==average) equal++;
             if(grade[i]>average) higher++;
         }
         System.out.println("There are "+ higher+" higher than average grade,"+lower+" lower than average grade,and "+equal+" equal average grade");
     }
 }