03. Diagonal Difference

package Uprajnenie;

import java.util.Scanner;

public class DiagonalDifference {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        // Read the size of the matrix
        int n = scanner.nextInt();
        scanner.nextLine(); // Consume newline

        // Initialize the matrix
        int[][] matrix = new int[n][n];

        // Read matrix elements
        for (int i = 0; i < n; i++) {
            String[] rowValues = scanner.nextLine().split(" ");
            for (int j = 0; j < n; j++) {
                matrix[i][j] = Integer.parseInt(rowValues[j]);
            }
        }

        // Calculate the difference between the sums of diagonals
        int primaryDiagonalSum = 0;
        int secondaryDiagonalSum = 0;
        for (int i = 0; i < n; i++) {
            primaryDiagonalSum += matrix[i][i];
            secondaryDiagonalSum += matrix[i][n - 1 - i];
        }

        int difference = Math.abs(primaryDiagonalSum - secondaryDiagonalSum);
        System.out.println(difference);
    }
}