Simple Array Sum Hackerrank Solution - java

 Simple Array Sum Hackerrank Solution - java

For Explanation Watch Video: 

Code:: 

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 i=0;i<ar.size();i++){

        sum = sum + ar.get(i);

    }

    return sum;

    }

}

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());

        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();

    }

}