技術標籤：Java程式設計(第十版)習題java

#7.4分析成績
編寫一個程式，讀入個數不確定的考試分數，並判斷有多少個分數是大於或等於平均分的，多少個分數是低於平均分的。
輸入一個負數表示輸入的結束。假設最高分為100。

import java.util.Scanner;

public class Ex74 {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       int[] nums = new int[101];
       while(true
 
){
           int num = sc.nextInt();
           if(num < 0){
               break;
           }
           nums[num]++;

       }
       double average;
       int countScore = 0;
       int count = 0;
       for(int i = 0; i < nums.length; i++){
            countScore += nums[i] * i;
            count +=
 
 nums[i];
       }
       average = (double)countScore / count;
       int lowAverage=0,highAverage=0;
       for (int i = 0; i < nums.length; i++) {
           if(i < average)
                lowAverage += nums[i];
            else {
                highAverage += nums[i];
            }
       }
    System.
 
out.println("Average is: "+average+","+lowAverage+", "+highAverage);
    System.out.println("BelowAverage: "+lowAverage);
    System.out.println("AboveAverage: "+highAverage);
   } 
}

執行示例：