MatrixMultiplication_Passing_Matrix_Function.java

// Java Program to Multiply two Matrices by Passing Matrix to a Function
// p4n.in
// codeswithpankaj.com

public class MatrixMultiplication_Passing_Matrix_Function {
    public static void main(String[] args) {
        // Define the matrices
        int[][] matrix1 = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
        int[][] matrix2 = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}};

        // Perform matrix multiplication
        int[][] productMatrix = multiplyMatrices(matrix1, matrix2);

        // Display the result
        System.out.println("Product of the matrices:");
        displayMatrix(productMatrix);
    }

    public static int[][] multiplyMatrices(int[][] matrix1, int[][] matrix2) {
        int rows1 = matrix1.length;
        int columns1 = matrix1[0].length;
        int columns2 = matrix2[0].length;
        int[][] result = new int[rows1][columns2];

        for (int i = 0; i < rows1; i++) {
            for (int j = 0; j < columns2; j++) {
                for (int k = 0; k < columns1; k++) {
                    result[i][j] += matrix1[i][k] * matrix2[k][j];
                }
            }
        }

        return result;
    }

    public static void displayMatrix(int[][] matrix) {
        int rows = matrix.length;
        int columns = matrix[0].length;

        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < columns; j++) {
                System.out.print(matrix[i][j] + " ");
            }
            System.out.println();
        }
    }
}