SimpleArraySum.java

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

class Result {

    /*
     * Complete the 'simpleArraySum' function below.
     *
     * The function is expected to return an INTEGER.
     * The function accepts INTEGER_ARRAY ar as parameter.
     */

    public static int simpleArraySum(List<Integer> ar) {
    
    int counter = 0;
    for (int i = 0; i < ar.size(); i++){
        int r = ar.get(i);
        counter = counter+r;
    }
    return counter;
    
    }

}
//SimpleArraySum

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

        int arCount = Integer.parseInt(bufferedReader.readLine().trim());

        String[] arTemp = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");

        List<Integer> ar = new ArrayList<>();

        for (int i = 0; i < arCount; i++) {
            int arItem = Integer.parseInt(arTemp[i]);
            ar.add(arItem);
        }

        int result = Result.simpleArraySum(ar);

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

        bufferedReader.close();
        bufferedWriter.close();
    }
}