Write a program to declare a square matrix A[][] of order (M X M) where 'M' is the number of rows and the number of columns such that M must...

Write a program to declare a square matrix A[][] of order (M X M) where 'M' is the number of rows and the number of columns such that M must be greater than 2 and less than 20. Allow the user to input integers into this matrix. Display appropriate error message for an invalid input. Perform the following tasks:

1. Display the input matrix.
2. Create a mirror image of the inputted matrix.
3. Display the mirror image matrix.

Test your program for the following data and some random data:

Example 1:

INPUT : M = 3

``````4   16   12
8    2   14
6    1    3
``````

OUTPUT :

ORIGINAL MATRIX

``````4   16   12
8    2   14
6    1    3
``````

MIRROR IMAGE MATRIX

``````12   16   4
14    2   8
3    1   6
``````

Example 2:

INPUT : M = 22

OUTPUT : SIZE OUT OF RANGE

``````import java.util.*;

class ISCPrac2013Q2{
public static void main(String[]args)throws InputMismatchException
{

int M, i, j, k, t;

Scanner scan = new Scanner(System.in);
System.out.println("Enter no of rows for a square matrix: ");
M= scan.nextInt();

if(M<=2 || M>=20){
System.out.println("\nSIZE OUT OF RANGE");
}else{

int A[][] = new int [M][M];

System.out.println("Enter "+(M*M) + " elements: ");
for(i=0;i < M;i++){
for(j=0;j < M;j++){
A[i][j] = scan.nextInt();
}
}

//DISPLAY THE ORIGINAL MATRIX
System.out.println("ORIGINAL MATRIX");
for(i=0;i < M;i++){
for(j=0;j < M;j++){
System.out.print(A[i][j]+" ");
}
System.out.println();
}

//USE TWO COUNTERS FOR ACCESSING COLUMNS -
// ONE INCREMENTAL, ONE DECREMENTAL

for(j=0, k = M-1; j < M/2; j++, k--){

for(i=0;i < M; i++){
//SWAP THE ELEMENTS OF THE FIRST COLUMN WITH THE LAST,
//SECOND COLUMN WITH SECOND LAST AND SO ON

t = A[i][j];
A[i][j] = A[i][k];
A[i][k] = t;

}
}

//DISPLAY THE MIRROR IMAGE MATRIX
System.out.println("ORIGINAL MATRIX");
for(i=0;i < M;i++){
for(j=0;j < M;j++){
System.out.print(A[i][j]+" ");
}
System.out.println();
}

}//END OF ELSE

}//END OF MAIN
}//END OF CLASS
``````