TO PRINT PATTERN TYPE 20

-
            A1 
         AB12 
      ABC123
   ABCD1234



class Pattern20
{

public static void main(String[] args)
{ 
      for(int i=1;i<=4;i++)
      {  char x='A';
            int k=1;
      for(int j=1;j<=8;j++)
      {
      if(j>=5-i && j<=4+i)
      {
            if(j<=4)
            {
             System.out.print(x);
             x++;
            }
             else
             {
                 System.out.print(k);
                 k++;
             }

      }
      else
      {
      System.out.print(" ");
      }
      }
      System.out.println();
      }
}
}

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