Solution.java:28: error: missing return statement }

TECH WITH KEVAL :

I am working this on Hacker Rank i am getting the error. Question is :- Finding the sum of elements of array.

Solution.java:28: error: missing return statement } ^ 1 error

import java.io.*;
import java.math.*;
import java.text.*;
import java.util.*;
import java.util.regex.*;

public class Solution {

    /*
     * Complete the simpleArraySum function below.
     */
    static int simpleArraySum(int[] ar) {
        Scanner sc = new Scanner(System.in);
        int n=sc.nextInt();
        int a[]=new int[n];


       int sum =0;
        for(int i=0;i<=n;i++){

            sum+=sc.nextInt();

        }

    }

    private static final Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) throws IOException {
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        int arCount = Integer.parseInt(scanner.nextLine().trim());

        int[] ar = new int[arCount];

        String[] arItems = scanner.nextLine().split(" ");

        for (int arItr = 0; arItr < arCount; arItr++) {
            int arItem = Integer.parseInt(arItems[arItr].trim());
            ar[arItr] = arItem;
        }

        int result = simpleArraySum(ar);

        bufferedWriter.write(String.valueOf(result));
        bufferedWriter.newLine();

        bufferedWriter.close();
    }
}

I am still a beginner.Sorry if this is a silly question but this is my first time on hacker rank.I tried searching online but i didn't got an solution so i asked it here.

Yogen Rai :

Stacktrace is saying you are missing return statement. Return the sum value. Further, this method also needs refactoring to add nums in input array. I did like this:

static int simpleArraySum(int[] ar) {

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

            sum += ar[i];

        }
        return sum;
    }