Symmetric Matrix Check

/*
 * Problem : Process a matrix.
 * Input   : r and c, then r rows of c integers.
 * Output  : true or false.
 * Approach: Compare mirrored elements.
 * Time    : O(n^2)
 * Space   : O(1)
 * Java    : 8 or newer.
 */
import java.util.Scanner;

public class Main {
    // This method solves the task. It receives the input and returns the answer.
    static boolean solve(int[][] m) {
        // Step 1: A matrix that is not square cannot be symmetric.
        if (m.length != m[0].length) {
            return false;
        }

        // Step 2: Compare each element above the diagonal with its mirror below the diagonal.
        for (int i = 0; i < m.length; i++) {
            for (int j = i + 1; j < m.length; j++) {
                if (m[i][j] != m[j][i]) {
                    return false;
                }
            }
        }
        return true;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int rows = scanner.nextInt();
        int cols = scanner.nextInt();
        int[][] m = new int[rows][cols];
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                m[i][j] = scanner.nextInt();
            }
        }
        System.out.println(solve(m));
    }
}