Question

所以我有课程作业，我必须让用户在一个数组中键入值，得到平均值并输出高于或等于平均值的分数，以及低于平均值的分数。

但是，我只计算出平均值。

这是我到目前为止所做的：

public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    System.out.println("Enter size of your array: ");

    int n = sc.nextInt();
    int a[] = new int[n];
    System.out.println("Enter the test scores");

    for(int i = 0; i < a.length; i++) {
        a[i] = sc.nextInt(); 
    }

    int sum = 0;

    for(int b=0; b < a.length; b++) {
        sum = sum + a[b]; 
    }

    double average = ((double)sum) / a.length;
    System.out.println("The average is"+" " + average);
}

我希望得到帮助，我输出的分数高于或等于平均分数和低于平均分数。

Answer 1

public static void main(String[] args) {

 Scanner sc = new Scanner(System.in);

System.out.println("Enter size of your array: ");

int n = sc.nextInt();

int a[] = new int[n];

System.out.println("Enter the test scores");

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

  a[i] = sc.nextInt(); 

}
   int sum = 0;

        for(int b=0; b < a.length; b++){

            sum = sum + a[b]; 
        }
         double average = ((double)sum) / a.length;

       int above = 0;
       int below = 0;

       for(int b=0; b < a.length; b++){

            if ((double)a[b] > average) {
                above++;
            }
            else if ((double)a[b] < average) {
                below++;
            }
        }


        System.out.println("The average is"+" " + average);
        System.out.println("The count of numbers above average is " + above);
        System.out.println("The count of number equal to average is " + (a.length - below - above));
        System.out.println("The count of numbers below average is " + below);
    }
}

Answer 2

如果您希望将每个分数输出高于平均值，则将您的System.out行放入另一个for循环中，迭代数组，将每个元素与平均值进行比较。

实施例

System.out.print("Scores Above or Equal to the Average: ");
for(int i = 0, i < array.length, i++) {
    if (array[i] >= average) {
        System.out.print(array[i] + ", ");
    } else {}
}

如果您试图获得高于或等于平均值的分数，基本上做同样的事情，但添加一个计数器变量

实施例

int scoresAbove = 0;
for(int i = 0, i < array.length, i++) {
    if (array[i] >= average) {
        scoresAbove ++;
    } else {}
}
System.out.print("Number of Scores Above the Average: " + scoresAbove);

Answer 3

添加如下代码块：

int numScoresAbove = 0;
for(int i = 0; i<a.length(); i++){
  if(a[i]>=average){
    numScoresAbove++
    }
}
System.out.println("Number of scores above or equal to the average: "+numScoresAbove);

然后对不到一部分使用几乎相同的东西。

Java输出的分数高于或等于平均值

3 个答案: