package sets.multysets;

import java.util.Iterator;

public interface MultySet<E> {
	public boolean isEmpty();
	public void clear();
	//public Iterator<sets.multysets.MultySetClass.Couple> coupleIterator();
	public Iterator<E> iterator();
	public int size();
	public MultySet<E> clone();
	public void add(E el, int card);
	public int remove(E el);
	public int contains(E el);
	public boolean equals(Object other);
	public String toString();
	public boolean SubSetOf(MultySet<E> other);
	public MultySet<E> union(MultySet<E> other);
	public MultySet<E> intersection(MultySet<E> other);
	public MultySet<E> difference(MultySet<E> other);
}