Question

我正在尝试实现两种方法：main方法和另一种方法。 side方法通过数学计算得到Array的平均值，该Array位于main方法本身。然后它将它返回到main方法。

import java.util.*;
public class ArrayAverageDouble
{
    public static void main(String[] args) 
    {
        Scanner sc = new Scanner(System.in);

        double average=0;
        int i=0;
        double sum=0;
        int size = 0;

        System.out.println("What size do you want the Array: ");
        size = sc.nextInt();

        double arrayDouble[] = new double[size];

        for (i = 0; i < arrayDouble.length; i++) 
        {
            System.out.println("Enter a number");
            arrayDouble[i]=sc.nextDouble();
        }

       System.out.println("The average of ' arrayDouble ' is: " + average);

        sc.close();
    }

    private static void avgInt(double[] arrayDouble)
    {
        average = ?
        return average;
    }
}

Answer 1

private static double average(double[] arrayDouble) {
    double total = 0;
    for(double value : arrayDouble) {
        total += value;
    } 
    return total / arrarDouble.lenght;
}

使用第二种方法获取Array的平均值

1 个答案: