Arguments of variable number of integers in method in java

Question

Question: Write a method that takes as input a variable number of integers. The method should return the average of the integers as a double. Write a full program to test the method.

That code below creates an array of 10 integers and finds their average. However, I need it to create a variable number of arguments (int...a) where any number of integers entered can be averaged. Can someone help me.Thanks.

My code:

package average.pkgint;
import java.util.Scanner;
public class AverageInt {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        int [] number = new int [10];
        Scanner b = new Scanner(System.in);
        System.out.println("Enter your 10 numbers:");
        for (int i = 0; i < number.length; i++) {
             number[i] =  b.nextInt() ;

        }

        System.out.println("The average is:"+Avnt(number));

    }

    public static int  Avnt(int [] a){//declare arrays of ints
        int result = 1;      
        int sum = 0;
        //iterate through array
        for (int num : a) {
              sum += num; 
        }
            double average = ( sum / a.length);//calculate average of elements in array
            result = (int)average;

             return result;

    }

    }

Answer 1

This is a way of getting as many variables as you want to a method and going through them all:

public static void testVarArgs(int... numbers){
    for(double u: numbers) {
        System.out.println(u);
    }
}

Answer 2

Just change your method declaration to a variable length parameter:

public static int  Avnt(int ... a){//declare variable int arguments

When you use a variable length parameter, you supply the values in the method invocation. For example,

    System.out.println(Avnt(1,2,3));
    System.out.println(Avnt(1,2,3,4,5,6,9,9,9,10,10));

Actually, this looks like it meets your requirements. Just add method calls in your main() similar to these.

Answer 3

If you don't want to read the number of integers as the first input you can declare a stack in stead of an array

Stack<Integer> numbers=new Stack<>()

and then you can add the numbers with the add method.