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");
    }
}