Example: MatrixEqualityIterative in Java

// MatrixEqualityIterative
public class Main {
    public static boolean areMatricesEqualIterative(int[][] matrix1, int[][] matrix2) {
        // Step 1: Check if both matrices are null
        if (matrix1 == null && matrix2 == null) {
            return true;
        }
        // Step 2: Check if one matrix is null and the other isn't
        if (matrix1 == null || matrix2 == null) {
            return false;
        }

        // Step 3: Check if the number of rows is the same
        if (matrix1.length != matrix2.length) {
            return false;
        }

        // Step 4: Check if the number of columns in each row is the same
        for (int i = 0; i < matrix1.length; i++) {
            if (matrix1[i].length != matrix2[i].length) {
                return false;
            }
        }

        // Step 5: Compare each element
        for (int i = 0; i < matrix1.length; i++) {
            for (int j = 0; j < matrix1[i].length; j++) {
                if (matrix1[i][j] != matrix2[i][j]) {
                    return false; // Found a mismatch
                }
            }
        }

        // Step 6: If all checks pass, matrices are equal
        return true;
    }

    public static void main(String[] args) {
        int[][] matrixA = {{1, 2, 3}, {4, 5, 6}};
        int[][] matrixB = {{1, 2, 3}, {4, 5, 6}};
        int[][] matrixC = {{1, 2, 3}, {4, 5, 9}}; // Different element
        int[][] matrixD = {{1, 2}, {4, 5, 6}}; // Different column count in row

        System.out.println("Matrix A and Matrix B are equal: " + areMatricesEqualIterative(matrixA, matrixB));
        System.out.println("Matrix A and Matrix C are equal: " + areMatricesEqualIterative(matrixA, matrixC));
        System.out.println("Matrix A and Matrix D are equal: " + areMatricesEqualIterative(matrixA, matrixD));
    }
}