SimpleArraySum.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

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)
 {
 // Write your code here
 int sum = 0;
 
 for(int arrayElements : ar)
 {
 sum += arrayElements;
 }
 
 return sum;
 }
}

public class SimpleArraySum
{
 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());

 List<Integer> ar = Stream.of(bufferedReader.readLine().replaceAll("\\s+$", "").split(" "))
 .map(Integer::parseInt)
 .collect(toList());

 int result = Result.simpleArraySum(ar);

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

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