problem displaying patterns correctly using for loops

[raged789]

problem is i need to write 4 methods to display 4 different designs.

-all asterisks need to be printed by a single statement:

System.out.print('*')

- the statement:

System.out.println()

is used to move to the next line

-

System.out.print(' ')

can be used for the last 2 patterns which is what im having trouble with.

-cant be any other output statements in the program. The last 2 patterns require that each line begin with an appropriate # of blank spaces.

these are the designs:

a. 
*
**
***
****
*****
******
*******
********
*********
**********

b.

**********
*********
********
*******
******
*****
****
***
**
*

c.
**********
 *********
  ********
   *******
    ******
     *****
      ****
       ***
        **
         *

d.
         *
        **
       ***
      ****
     *****
    ******
   *******
  ********
 *********
**********

I have a and b, just cant get c and d. here is my code.

public class Assignment1
{

   public static void methodA ()
   {
           for (int a=11; a>0; a--)
              {
                  for (int b=a; b<11; b++)
                      System.out.print("*");
                      System.out.println();
               }

               
           System.out.println("");
   }

   public static void methodB ()
   {
        for (int z=1; z<11; z++)
              {
                  for (int x=z; x<11; x++)
                      System.out.print("*");
                      System.out.println();
               }                                                                                               
   }
   public static void methodC ()
   {
      


   }

   public static void methodD ()
   {
     
     
     

   }

   public static void main (String[] args)
   {
      Assignment1.methodA();
      Assignment1.methodB();
      Assignment1.methodC();
      Assignment1.methodD();
   }

}

any help with c and d would be great. I keep getting infinite loops