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Exercise Matrix: Similar to Math class, write a Matrix library that supports matrix operations (such as addition, subtraction, multiplication) via 2D arrays. The operations shall support both doubles and ints. Also write a test class to exercise all the o

Linah kariru answered on November 1, 2022 Popularity 1/10 Helpfulness 1/10

answer Exercise Matrix: Similar to Math class, write a Matrix library that supports matrix operations (such as addition, subtraction, multiplication) via 2D arrays. The operations shall support both doubles and ints. Also write a test class to exercise all the o

Exercise Matrix: Similar to Math class, write a Matrix library that supports matrix operations (such as addition, subtraction, multiplication) via 2D arrays. The operations shall support both doubles and ints. Also write a test class to exercise all the o

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//PROGRAM

// class for performing different operations on a MATRIX

import java.util.Scanner;

class Matrix

{

int r,c,k;

// method for ADDITION

void add(int a[][],int b[][])

{

  int c[][]=new int[a.length][b[0].length];

  for(int i=0;i<a.length;i++)

  {

   for(int j=0;j<b[0].length;j++)

   {

    c[i][j]=a[i][j]+b[i][j];

    System.out.print("  "+c[i][j]);

   }

    System.out.println("  ");

  }

 }

// method for MULTIPLICATION

void mul(int a[][],int b[][])

{




  int c[][]=new int[a.length][b[0].length];

  for(int i=0;i<a.length;i++)

   for(int j=0;j<b[0].length;j++)

    for(int k=0;k<a[0].length;k++)

     c[i][j]+=a[i][k]*b[k][j];

  

   for(int i=0;i<a.length;i++)

   {

    for(int j=0;j<b[0].length;j++)

     System.out.print(" "+c[i][j]);

  

    System.out.println(" ");

   }

 }

// method for subtraction

void sub(int a[][],int b[][])

{




  int c[][]=new int[a.length][b[0].length];

  for(int i=0;i<a.length;i++)

  {

  for(int j=0;j<b[0].length;j++)

   {

   c[i][j]=a[i][j]-b[i][j];

    System.out.print("  "+c[i][j]);

   }

    System.out.println("  ");

  }




}

}







// MAIN CLASS

class MatOperations1

{

 public static void main(String args[])

{

 int z;

 Matrix m=new Matrix();

 Scanner s=new Scanner(System.in);

 int x[][]=new int[4][4];

 int y[][]=new int[4][4];







 System.out.println("Enter matrx A  ");

 for(int i=0;i<4;i++)

 for(int j=0;j<4;j++)

 x[i][j]=s.nextInt();




 System.out.println("Enter matrx B "); 

 for(int i=0;i<4;i++)

  for(int j=0;j<4;j++)

   y[i][j]=s.nextInt();




 System.out.println("Enter your  choice 1> Multiplication 2>Addition 3> Subtraction");

 z=s.nextInt();

 if(z==1)

  m.mul(x,y);

else

if(z==2)

  m.add(x,y);

else

if(z==3)

  m.sub(x,y);

else

System.out.println("Invalid option");




}

}

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Source: connect2compute.wordpress.com

Tags: 2d math matrix operations test-class typescript

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Contributed on Nov 01 2022

Linah kariru

0 Answers Avg Quality 2/10

Exercise Matrix: Similar to Math class, write a Matrix library that supports matrix operations (such as addition, subtraction, multiplication) via 2D arrays. The operations shall support both doubles and ints. Also write a test class to exercise all the o

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