Rotate matrix by 90 degrees

/*package whatever //do not write package name here */

import java.util.*;
import java.io.*;

class GFG 
{
	public static void main (String[] args)
	{
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		int arr[][] = new int[n][m];
		for(int i=0; i<n; i++)
		{
		    for(int j=0; j<m; j++)
		    {
		        arr[i][j] = sc.nextInt();
		    }
		}
		
		for(int j=0; j<m; j++)
		{
		    for(int i=n-1; i>=0; i--)
		    {
		        System.out.print(arr[i][j]+" ");
		    }
		    System.out.println();
		}
	}
}