2 D Matrix And Rotate It 90 Degree Clickwise

For Details of The Program: CLICK HERE

import java.io.*;

class Q2

{

int a[][],m,i,j;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

void accept( ) throws Exception

{

System.out.print("\nEnter no of rows:");

m=Integer.parseInt(br.readLine());

check();

}

void check( ) throws Exception

{

if(m<=2 ||m >10)

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

else

{

a=new int[m][m];

m--;

for(i=0;i<=m;i++)

{

for(j=0;j<=m;j++)

{

System.out.print("\nEnter Value:");

a[i][j]=Integer.parseInt(br.readLine());

}

}

show();

}

}

void show()

{

System.out.println("\nThe original matrix");

for(i=0;i<=m;i++)

{

for(j=0;j<=m;j++)

{

System.out.print(" "+a[i][j]);

}

System.out.println();

}

System.out.println("\n=nThe matrix after rotation:");

for(i=0;i<=m;i++)

{

for(j=0;j<=m;j++)

{

System.out.print(" "+a[m-j][i]);

}

System.out.println();

}

}

public static void main(String args[]) throws Exception

{

Q2 one=new Q2 ();

one.accept();

}

}

Variable description

Type	Variable Name	Purpose	Scope
int	A[][]	To store the	Entire program
		values
int	i	Loop control	Entire program
		variable
int	j	Loop control	Entire program
		variable
int	m	Size of the matrix	Entire program
Algorithm

Step 1: Create int variables i,j and m. Declare an array a[][]

Step 2: Take the size of the square matrix from user and store in m

Step 3: If ‘m’ is not within specified range, show appropriate message.

Step 4: Take values in the array 

Step 5: Display the array and display rotating the array

2015 Computer Practical Paper: CLICK HERE