Java Programme to print the V-shape pattern

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

public class Main {
public static void main(String args[]) throws IOException {

  //write your code here
  Scanner sc=new Scanner(System.in);
  int n=sc.nextInt();
  for(int i=1;i<=n;i++)
  {
    int j=i;
    for(int num=1;num<=n*2;num++)
    {
     if(num<=i)
     {
       System.out.print(num);
     }
     else if(num<=2*n-i)
     {
       System.out.print(" ");
     }
     else if(num>2*n-i)
     {
       System.out.print(j);
       j--;
     }
    }
    System.out.println();
  }
}

}