Symmetric Matrix – SchoolCodeHub

Given a square matrix of custom size the task is to check whether it is a Symmetric Matrix or not.

Symmetric Matrix is a square matrix which is equal to its transpose.

Example: Consider a matrix:-

1	2	6
2	8	4
6	4	5

It’s transpose is:-

1	2	6
2	8	4
6	4	5

Hence it is a Symmetric Matrix.

Java

import java.util.*;
public class SymmetricMatrix
{
    public static void main(String args[])
    {
        int size=0,flag=1;
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter size of matrix: ");
        size=sc.nextInt();
        int ar[][]=new int[size][size];
        int tr[][]=new int[size][size];
        System.out.println("Enter matrix elements:-");
        for(int i=0;i<size;i++)
        {
            for(int j=0;j<size;j++)
            {
                ar[i][j]=sc.nextInt();
            }
        }
        for(int i=0;i<size;i++)
        {
            for(int j=0;j<size;j++)
            {
                tr[j][i]=ar[i][j];
            }
        }
        for(int i=0;i<size;i++)
        {
            for(int j=0;j<size;j++)
            {
                if(ar[i][j]!=tr[i][j])
                {
                    flag=0;
                }
            }
        }
        if(flag==1)
        {
            System.out.println("It is a Symmetric Matrix");
        }
        else
        {
            System.out.println("It is not a Symmetric Matrix");
        }
    }
}

Java