Number Pattern

 import java.util.*;

public class Main{

    public static void main(String[] args){          

           //Fill your code

           Scanner sc = new Scanner(System.in);

           int n=sc.nextInt();

           int c=n-1;

           for(int i=1;i<=n;i++){

               if(i%2==0)

               System.out.println(c++);

               for(int j=1;j<=n;j++) {

                   System.out.print(i);

               }

               if(i%2!=0)

               System.out.print(c++);

               System.out.println();

           }

    }

}