需要逻辑上的帮助以进行实际操作

Question

我在做这部分时需要帮助

“确定有多少分数高于或等于平均值​​，有多少分数低于平均值。”

谁能提供一些想法如何根据需要获取输出

例如：输入要处理的测验分数数：5

分数 1：10

分数 2：8

分数 3：9

得分 4：2

分数 5：4

结果

=======

平均为 6.6

高于或等于平均分的数为3

低于平均分的分数为 2

public static void main(String[] args) {

  Scanner scanner = new Scanner(System.in);
  
  System.out.print("Enter number of quiz scores to process:");
  int totalScore=scanner.nextInt();

  int[]scoreNum= new int[totalScore];
  
  int i; 
  double total=0.0;
    
  for(i=0;i<totalScore;i++){
  System.out.printf("Score %d:", i+1 );
  scoreNum[i]=scanner.nextInt();
  total += scoreNum[i];
  }
  
  double average=total/totalScore;
  System.out.format("The Average is :%.1f\n",average); 
       

Answer 1

您的变量是在 for 循环之前声明的，因此它们也可以在它之后使用（在您当前打印出平均值的位置。您可能需要另一个循环在您计算后再次检查分数值平均值：cc @JuhaLahio

public static void main(String[] args) {

  Scanner scanner = new Scanner(System.in);
  
  System.out.print("Enter number of quiz scores to process:");
  int totalScore=scanner.nextInt();

  int[]scoreNum= new int[totalScore];
  
  int i; 
  double total=0.0;
    
  for(i=0;i<totalScore;i++){
  System.out.printf("Score %d:", i+1 );
  scoreNum[i]=scanner.nextInt();
  total += scoreNum[i];
  }
  
  double average=total/totalScore;
  System.out.format("The Average is :%.1f\n",average); 

  int countLesser = 0;
  int countGreater = 0;
  for (int i = 0; i < totalScore; i++) {
    if(scoreNum[i] > average) countGreater++;
    else if(scoreNum[i] < average) countLesser++;
  }
  System.out.println("Greater: " + countGreater + " Lesser: " + countGreater);

  }

Answer 2

试试这个代码：

Scanner scanner = new Scanner(System.in);

    System.out.print("Enter number of quiz scores to process:");
    int totalScore = scanner.nextInt();
    float[] scores = new float[totalScore];
    float total = 0;

    for (int i = 0; i < totalScore; i++) {
        System.out.print("Score " + (i + 1) + ": \n");
        scores[i] = scanner.nextFloat();
        total += scores[i];
    }

    float average = total / totalScore;
    int scoresAbove = 0;
    int scoresBelow = 0;

    for (int a = 0; a < scores.length; a++) {
        if (scores[a] >= average) {
            scoresAbove++;
        } else {
            scoresBelow++;
        }
    }

    System.out.println("The average is: " + average + "\n Number of scores above or equal to the average is " + scoresAbove + "\n Number of scores below the average is " + scoresBelow);