Java, matrix
java program to get output on the basis of users choice of switch statement perform operations addition, subtraction and multiplication of matrix.
View Answers
October 28, 2012 at 3:06 PM
import java.io.*;
class Matrix
{
int a ,b,i,j;
int matrix[][]=new int [12][14];
void Read()
{
int a ,b,i,j;
int matrix[][]=new int [12][14];
DataInputStream is=new DataInputStream(System.in);
try
{
System.out.println("enter the row");
a=Integer.parseInt(is.readLine());
System.out.println("enter the col;umn");
b=Integer.parseInt(is.readLine());
System.out.println("enter the elements for the matrix");
for(i=0;i<a;i++)
{
for(j=0;j<b;j++)
{
matrix[i][j]=Integer.parseInt(is.readLine());
}
}
System.out.println("the matrix that you entered is");
for(i=0;i<a;i++)
{
for(j=0;j<b;j++)
{
System.out.print(matrix[i][j]);
}
}
}
catch(Exception ex)
{}
}
public static void main(String args[])
{
Matrix m=new Matrix();
m.Read();
}
}
October 29, 2010 at 3:27 PM
Hello Friend,
Try this:
import java.util.*;
class MatrixExamples{
public static void main(String[] args){
Scanner input = new Scanner(System.in);
int[][] A = new int[2][2];
int[][] B = new int[2][2];
int[][] C = new int[2][2];
System.out.println("Enter elements for matrix A : ");
for (int i=0 ; i < A.length ; i++)
for (int j=0 ; j < A[i].length ; j++){
A[i][j] = input.nextInt();
}
System.out.println("Enter elements for matrix B : ");
for (int i=0 ; i < B.length ; i++)
for (int j=0 ; j < B[i].length ; j++){
B[i][j] = input.nextInt();
}
System.out.println("Matrix A: ");
for (int i=0 ; i < A.length ; i++)
{ System.out.println();
for (int j=0 ; j < A[i].length ; j++){
System.out.print(A[i][j]+" ");
}
}
System.out.println();
System.out.println("Matrix B: ");
for (int i=0 ; i < B.length ; i++)
{ System.out.println();
for (int j=0 ; j < B[i].length ; j++){
System.out.print(B[i][j]+" ");
}
}
System.out.println();
int menu = 0;
System.out.println();
System.out.println("1. Addition Of Matrix");
System.out.println("2. Subtraction Of Matrix");
System.out.println("3. Multiplication Of Matrix");
System.out.println("4. Exit");
boolean quit = false;
do{
System.out.print("Please enter your choice: ");
menu = input.nextInt();
System.out.println();
switch(menu) {
case 1:
System.out.println("*Sum of 2 matrices*");
for(int i=0;i<2;i++){
for(int j=0;j<2;j++){
C[i][j]=A[i][j]+B[i][j];
System.out.print(C[i][j]+" ");
}
System.out.println();
}
break;
case 2:
System.out.println("Subtraction of 2 matrices*");
for(int i=0;i<2;i++){
for(int j=0;j<2;j++){
C[i][j]=A[i][j]-B[i][j];
System.out.print(C[i][j]+" ");
}
System.out.println();
}
break;
case 3:
System.out.println("*Multiplication of 2 matrices*");
for(int i=0;i<2;i++)
{
for(int j=0;j<2;j++)
{
for(int k=0;k<2;k++)
{
C[i][j]+=A[i][k]*B[k][j];
}
}
}
for(int i=0;i<2;i++)
{
for(int j=0;j<2;j++)
{
System.out.print(+C[i][j]+" ");
}
System.out.println();
}
break;
case 4:
quit = true;
break;
default:
System.out.println("Invalid Entry!");
}
}
while (!quit);
}
}
Thanks
October 28, 2012 at 3:06 PM
import java.io.*;
class Matrix
{
int a ,b,i,j;
int matrix[][]=new int [12][14];
void Read()
{
int a ,b,i,j;
int matrix[][]=new int [12][14];
DataInputStream is=new DataInputStream(System.in);
try
{
System.out.println("enter the row");
a=Integer.parseInt(is.readLine());
System.out.println("enter the col;umn");
b=Integer.parseInt(is.readLine());
System.out.println("enter the elements for the matrix");
for(i=0;i<a;i++)
{
for(j=0;j<b;j++)
{
matrix[i][j]=Integer.parseInt(is.readLine());
}
}
System.out.println("the matrix that you entered is");
for(i=0;i<a;i++)
{
for(j=0;j<b;j++)
{
System.out.print(matrix[i][j]);
}
}
}
catch(Exception ex)
{}
}
public static void main(String args[])
{
Matrix m=new Matrix();
m.Read();
}
}
October 28, 2012 at 3:06 PM
import java.io.*;
class Matrix
{
int a ,b,i,j;
int matrix[][]=new int [12][14];
void Read()
{
int a ,b,i,j;
int matrix[][]=new int [12][14];
DataInputStream is=new DataInputStream(System.in);
try
{
System.out.println("enter the row");
a=Integer.parseInt(is.readLine());
System.out.println("enter the col;umn");
b=Integer.parseInt(is.readLine());
System.out.println("enter the elements for the matrix");
for(i=0;i<a;i++)
{
for(j=0;j<b;j++)
{
matrix[i][j]=Integer.parseInt(is.readLine());
}
}
System.out.println("the matrix that you entered is");
for(i=0;i<a;i++)
{
for(j=0;j<b;j++)
{
System.out.print(matrix[i][j]);
}
}
}
catch(Exception ex)
{}
}
public static void main(String args[])
{
Matrix m=new Matrix();
m.Read();
}
}
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