Simple Array Sum

Integer Array를 받아 개별요소들의 합을 구하는 문제.

 

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

public class Solution {

	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();
    }
    
    /*
     * Complete the simpleArraySum function below.
     */
    static int simpleArraySum(int[] ar) {
        int sum = 0;
        for (int element : ar) {
            sum += element;
        }
        return sum;
    }
}

 

입력받은 Integer Array를 for문을 돌며 더하여 return 하면 된다.

 

문제 출처 : www.hackerrank.com