//    Edit the RectangularArray class.
//    Implement the constructor and the columns() and 
//    rows() methods.
//    Implement the index() method.
//    Implement the setElementAt() method.
//    Implement the getElementAt() method.
//    Write a Driver class that creates a 2x4 
//    RectangularArray, fills it with the String
//    objects "A", "B", ..., "H" and then prints the elements in table format.

/**
 * A rectangular array of objects
 *
 */
public class RectangularArray
{
    private int       columns, rows;
    private Object[]  data;
    

    /**
     * Explicit Value Constructor
     *
     * @param rows    The number of rows
     * @param columbs The number of columns
     */
    public RectangularArray(int rows, int columns)
    {


    }


    /**
     * Returns the number of columns in this RectangularArray
     *
     * @return   The number of columns
     */
    public int columns()
    {


    }
    
    

    /**
     * Get the element at a particular row and column
     *
     * @param row     The row index
     * @param column  The column index
     * @return        The Object at the given row and column
     */
    public Object getElementAt(int row, int column)
    {


    }
    


    /**
     * This implementation uses an ordinary array as the underlying
     * data structure.  This converts from row and column indexes
     * to an index into the underlying data structure.
     *
     * @param row     The row index
     * @param column  The column index
     * @return        The corresponding index in the data array
     */
    private int index(int row, int column) 
                     throws IndexOutOfBoundsException
    {



    }
    




    /**
     * Returns the number of rows in this RectangularArray
     *
     * @return   The number of rows
     */
    public int rows()
    {

    }
    

    

    /**
     * Set the element at a particular row and column
     *
     * @param row     The row index
     * @param column  The column index
     * @param o       The Object to put in the array
     */
    public void setElementAt(int row, int column, Object o)
    {



    }
}