/*

* Program checks if Matrix is symmetric or not and finds the sum of left and right diagonals

* Accept size M

* Input values in array

* Display original matrix

* Check if marix is symmetric

* Add left diagonal elements and right diagonal elements

* Display if the matrix is symmetric or not

* Print sum of left and right diagonal elements

*/

import java.util.*;

class SymmetricMatrix

{

void main()

{

int M;

int arr[][];

Scanner sc=new Scanner(System.in);

System.out.println("Enter number of rows and coloumn");

M=sc.nextInt();

arr=new int[M][M];

if( M<=0)

{

System.out.println("Enter positive number");

}

else

{

int lsum=0; int rsum=0;

for(int i=0; i<M; i++)

{

for(int j=0; j<M; j++)

{

System.out.println("enter integer");

arr[i][j]=sc.nextInt();

}

}

System.out.println("Original Matrix");

for(int i=0; i<M; i++)

{//Printing original matrix

for(int j=0; j<M; j++)

{

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

}

System.out.println();

}

int c=0;

for(int i=0; i<M; i++)

{

for(int j=0; j<M; j++)

{

if(arr[i][j]!=arr[j][i])

c++;

if(i==j)

lsum +=arr[i][j];

if((i+j)==(M-1))

rsum += arr[i][j];

}

}

if(c==0)

System.out.println("THE GIVEN MATRIX IS SYMMETRIC");

else

System.out.println("THE GIVEN MATRIX IS NOT SYMMETRIC");

System.out.println("The sum of the left diagonal = "+lsum);

System.out.println("The sum of the right diagonal = "+ rsum);

}

}

}