View Code of Problem 57

import java.util.Scanner;

public class Main
{
  public static void main(String[] args)
  {
    Scanner scan=new Scanner(System.in);
    int n=scan.nextInt();
    
    for(int i=1;i<=n;i++)
    {
      for(int j=n-i;j>=1;j--)
      {
        System.out.print(" ");
      }
      for(int k=1;k<=i;k++)
      {
        System.out.print(k);
      }
      for(int l=i-1;l>=1;l--)
      {
        System.out.print(l);
      }
      
    }
    
     for(int i=n-1;i>=1;i--)
    {
      for(int j=1;j<=n-i;j++)
      {
        System.out.print(" ");
      }
      for(int k=1;k<=i;k++)
      {
        System.out.print(k);
      }
      for(int l=i-1;l>=1;l--)
      {
        System.out.print(l);
      }
    }
   
  }
}