java-2d-array.java

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

public class Solution {

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

    public static void main(String[] args) {
        int[][] arr = new int[6][6];

        for (int i = 0; i < 6; i++) {
            String[] arrRowItems = scanner.nextLine().split(" ");
            scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

            for (int j = 0; j < 6; j++) {
                int arrItem = Integer.parseInt(arrRowItems[j]);
                arr[i][j] = arrItem;
            }
        }

        int largestSum = Integer.MIN_VALUE;
        for (int i = 0; i < arr.length - 2; i++) {
            for (int j = 0; j < arr[j].length - 2; j++) {
                int sum = 0;
                sum += arr[i][j];
                sum += arr[i][j + 1];
                sum += arr[i][j + 2];
                sum += arr[i + 1][j + 1];
                sum += arr[i + 2][j];
                sum += arr[i + 2][j + 1];
                sum += arr[i + 2][j + 2];

                largestSum = Math.max(sum, largestSum);
            }
        }
        System.out.println(largestSum);

        scanner.close();
    }
}