class SimpleHeapImpl implements Heap<T> {

	@Override
	public boolean isEmpty() {
		return size() == 0;
	}

	public  SimpleHeapImpl(Comparator<T> comparator);
	public  SimpleHeapImpl(List<T> list, Comparator<T> comparator);
	public  SimpleHeapImpl(T[] array, Comparator<T> comparator);

}