passing 1D array

Write a program to show passing of 1D array.

import java.util.*;

class P16ArrayPassing

{

    public static void main()

    {

        System.out.println("Enter the no. of integer you want to input  ");

        Scanner in = new Scanner(System.in);

        int n=in.nextInt();

        int[] a= new int[n];// create an array of length n

        for(int i=0;i<n;i++)

        {

            System.out.print(" \n Enter integer  "+(i+1) + "\t");

            a[i]=in.nextInt(); // store in value input by user in array

        }

        int[] result=passingArray(a,n);

        System.out.println("\nSUM of Numbers  "+ result[0]);

        System.out.println("\nMULTIPLICATIONS of Numbers  "+ result[1]);

        System.out.println("\naverage of Numbers  "+ result[2]);

    }

    static int[] passingArray(int[] ar, int n)

    {

        int sum=0, mul=1;

        for(int i=0;i<n;i++)

            sum= sum + ar[i]; // sum is calculated

        for(int i=0;i<n;i++)

            mul= mul * ar[i];// multiplication is calculated

        int avg = sum/n; // average is calculated

        int[] r = new int[]{sum,mul,avg};

        return r; 

    }

}

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