# Mirror Image of Matrix ISC 2013 Practical

Write a program to declare a square matrix a[][] of order (m × 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:
(a) Display the input matrix.
(b) Create a mirror image of the inputted matrix.
(c) Display the mirror image matrix.

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

Example 1:
INPUT: M = 3

`4    16   128    2    146    1    3`

OUTPUT:
ORIGINAL MATRIX

`4    16   128    2    146    1    3`

MIRROR IMAGE MATRIX

`12   16   414   2    83    1    6`

Example 2:
INPUT: M = 22
OUTPUT: SIZE OUT OF RANGE

``````import java.io.*;
class Mirror{
public static void main(String args[])throws IOException{
System.out.print("m = ");
if(m < 3 || m > 19){
System.out.println("SIZE OUT OF RANGE");
return;
}
int a[][] = new int[m][m];
int b[][] = new int[m][m];
int p = 0;
int q = m - 1;
System.out.println("Enter matrix elements:");
for(int i = 0; i < m; i++){
q = m - 1;
for(int j = 0; j < m; j++){
b[p][q] = a[i][j];
q--;
}
p++;
}
System.out.println("ORIGINAL MATRIX");
for(int i = 0; i < m; i++){
for(int j = 0; j < m; j++){
System.out.print(a[i][j] + "\t");
}
System.out.println();
}
System.out.println("MIRROR IMAGE MATRIX");
for(int i = 0; i < m; i++){
for(int j = 0; j < m; j++){
System.out.print(b[i][j] + "\t");
}
System.out.println();
}
}
}``````