Skip to main content

Write a Program to multiply two 3x3 2D matrices

By
import java.io.*;
import java.util.Scanner;

public class MatrixMultiplication
{
public static void main(String a[]) throws IOException
{
System.out.println("Welcome to the MatrixMultiplication project!");
        double [][] arr1 = new double [3][3];
        double [][] arr2 = new double [3][3];
        double [][] arr3 = new double [3][3];
        Scanner input = new Scanner(System.in);
        int i=0,j=0,k=0;
       
        for(i=0;i<3;i++){
            for(j=0;j<3;j++){
                arr1[i][j]=input.nextDouble();
            }
        }
       
        for(i=0;i<3;i++){
            for(j=0;j<3;j++){
                arr2[i][j]=input.nextDouble();
            }
        }
       
        for(i=0;i<3;i++){
            for(j=0;j<3;j++){
                for(k=0;k<3;k++){
                    arr3[i][j]=arr3[i][j]+arr1[i][k]*arr2[k][j];
                }
            }
        }
       
        for(i=0;i<3;i++){
            for(j=0;j<3;j++){
                System.out.print(arr3[i][j]+"\t");
            }
            System.out.println();
        }
}

}

Comments

Post a Comment

Popular posts from this blog

Create a class called Book to represent a book. A Book should include four pieces of information as instance variables‐a book name, an ISBN number, an author name and a publisher. Your class should have a constructor that initializes the four instance variables. Provide a mutator method and accessor method (query method) for each instance variable. In addition, provide a method named getBookInfo that returns the description of the book as a String (the description should include all the information about the book). You should use this keyword in member methods and constructor. Write a test application named BookTest to create an array of object for 30 elements for class Book to demonstrate the class Book's capabilities.

By
Create a class called Book to represent a book. A Book should include four pieces of information as instance variables‐a book name, an ISBN number, an author name and a publisher. Your class should have a constructor that initializes the four instance variables. Provide a mutator method and accessor method (query method) for each instance variable. In addition, provide a method named getBookInfo that returns the description of the book as a String (the description should include all the information about the book). You should use this keyword in member methods and constructor. Write a test application named BookTest to create an array of object for 30 elements for class Book to demonstrate the class Book's capabilities. import java.io.*; class Book {     BufferedReader br = new BufferedReader(new InputStreamReader(System.in));     String book_name;     int isbn;     String author;     String publisher; ...
2 comments
Read more

Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four pieces of information as instance variables‐a part number (type String), a part description (type String), a quantity of the item being purchased (type int) and a price per item (double). Your class should have a constructor that initializes the four instance variables. Provide a set and a get method for each instance variable. In addition, provide a method named get Invoice Amount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as a double value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0. Write a test application named InvoiceTest that demonstrates class Invoice’s capabilities.

By
Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four pieces of information as instance variables‐a part number (type String), a part description (type String), a quantity of the item being purchased (type int) and a price per item (double). Your class should have a constructor that initializes the four instance variables. Provide a set and a get method for each instance variable. In addition, provide a method named get Invoice Amount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as a double value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0. Write a test application named InvoiceTest that demonstrates class Invoice’s capabilities. import java.io.*; class Invoice {     BufferedReader br = new BufferedReader(new InputStreamReader(System.i...
2 comments
Read more

Create a class called Employee that includes three pieces of information as instance variables—a first name (type String), a last name (type String) and a monthly salary (double). Your class should have a constructor that initializes the three instance variables. Provide a set and a get method for each instance variable. If the monthly salary is not positive, set it to 0. Write a test application named EmployeeTest that demonstrates class Employee’s capabilities. Create two Employee objects and display each object’s yearly salary. Then give each Employee a 10% raise and display each Employee’s yearly salary again

By
Create a class called Employee that includes three pieces of information as instance variables—a first name (type String), a last name (type String) and a monthly salary (double). Your class should have a constructor that initializes the three instance variables. Provide a set and a get method for each instance variable. If the monthly salary is not positive, set it to 0. Write a test application named EmployeeTest that demonstrates class Employee’s capabilities. Create two Employee objects and display each object’s yearly salary. Then give each Employee a 10% raise and display each Employee’s yearly salary again . import java.io.*; class Employee {     BufferedReader br = new BufferedReader(new InputStreamReader(System.in));     String f_name;     String l_name;     int sal;     Employee()     {         f_name="sarvajeet";     ...
1 comment
Read more