public class Shape
{
   public enum Type
   {
      SQUARE, UP_TRIANGLE, DOWN_TRIANGLE, RHOMBUS;
/*    *****   *            *****          *****
      *****   **           ****            *****
      *****   ***          ***              *****
      *****   ****         **                *****
      *****   *****        *                  *****   */
   }
   
   //Instance Variables
   private Shape.Type type;
   private int size;
   private String picture;
   
   //Constructor
   public Shape(Shape.Type type, int size, char symbol)
   {
      if ( size < 1 )
         throw new RuntimeException("Size must be positive");
      
      this.size = size;
      this.type = type;
      
      this.picture = "";
      switch ( this.type )
      {
         case SQUARE       :  square(symbol); break;
         case UP_TRIANGLE  :  upTriangle(symbol); break;
         case DOWN_TRIANGLE:  downTriangle(symbol); break;
         case RHOMBUS      :  rhombus(symbol);
      }
      this.picture = this.picture.trim();
   }
   
   //Accessor
   public int getSize()
   {
      return this.size;
   }
   
   //Accessor
   public Shape.Type getType()
   {
      return this.type;
   }
   
   //Override
   public String toString()
   {
      return this.picture;
   }

   //**************** Helper Methods ****************

   //Exercise 1: Nested Loops
   
   //Complete the picture of this Shape as a Square
   private void square(char dot)
   {
      for (int row = 1; row <= this.size; row++)
      {
      }
   }
   
   //Complete the picture of this Shape as an Up_Triangle
   private void upTriangle(char dot)
   {
      for (int row = 1; row <= this.size; row++)
      {
      }
   }
   
   //Complete the picture of this Shape as a Down_Triangle
   private void downTriangle(char dot)
   {
      for (int row = 1; row <= this.size; row++)
      {
      }
   }

   //Complete the picture of this Shape as a Rhombus
   private void rhombus(char dot)
   {
      for (int row = 1; row <= this.size; row++)
      {
      }
   }

/*
   //Exercise 2: Using a Helper

   //A helper to compose a line segment of given width and symbol
   private static String lineSegment(int width, char symbol)
   {
      String segment = "";
      return segment;
   }
   
   //Complete the picture of this Shape as a Square
   private void square(char dot)
   {
      for (int row = 1; row <= this.size; row++)
      {
      }
   }
   
   //Complete the picture of this Shape as an Up_Triangle
   private void upTriangle(char dot)
   {
      for (int row = 1; row <= this.size; row++)
      {
      }
   }
   
   //Complete the picture of this Shape as a Down_Triangle
   private void downTriangle(char dot)
   {
      for (int row = 1; row <= this.size; row++)
      {
      }
   }

   //Complete the picture of this Shape as a Rhombus
   private void rhombus(char dot)
   {
      for (int row = 1; row <= this.size ; row++)
      {
      }
   }
*/
}