/**
 * CSE 373, Spring 2011, Jessica Miller
 * An interface that defines the operations for PriorityQueue of integers.
 */
public interface IntPriorityQueue {
	
	/**
	 * Inserts the specified value into this priority queue.
	 * @param value  the value to insert into the priority queue
	 */
    public void add(int value);

    /**
     * Returns true if this priority queue contains no elements.
     * @return  true if this collection contains no elements; false otherwise
     */
    public boolean isEmpty();
    
    /**
     * Retrieves, but does not remove, the value at the top of this priority queue.
     * @return  the value at the top of this priority queue
     * @throws  NoSuchElementException - if this queue is empty
     */
    public int peek();

    /**
     * Retrieves and removes the value at the top of this priority queue.
     * @return  the value at the top of this priority queue
     * @throws  NoSuchElementException - if this queue is empty
     */
    public int remove();
}