/**
 * The <code>Piece</code> class manages all static information about
 * the pieces, such as their value, count, images.
 * Instances of piece can be created and used on the board.
 * @author  < your name here >
 * @version 2.0, 01/29/00
 */

class Piece {

  ///////////////////////////////////////////////
  // INSTANCE
  ///////////////////////////////////////////////

 	// YOUR CODE HERE

  ///////////////////////////////////////////////
  // STATIC
  ///////////////////////////////////////////////

	// YOUR CODE HERE

	// BELOW ARE HELPER METHODS TO GET YOU STARTED

  /**
   * Calculates internal array index 
   * Instances are created via the create methods
   * @param char piece code
   */
  protected static int getIndex(char c) {
    if(c>='a' && c<='z') return c-'a';
    if(c>='A' && c<='Z') return c-'A';
    throw new IndexOutOfBoundsException("Invalid letter: "+c);
  }

  /**
   * Converts an array of pieces to a string
   */
  public static String toString(Piece[] word) {
    StringBuffer s=new StringBuffer("");
    for(int i=0;i<word.length;i++)
      s.append(word[i].getLetter());
    return s.toString();
  }
}