import java.util.Iterator;

public class ArraySetMain {
    public static void main(String[] args) {
        ISet<Integer> set = new ArraySet<>();
        set.add(1);
        set.add(0);
        System.out.println(set.contains(0));

        Iterator<Integer> iterator = set.iterator();
        while (iterator.hasNext()) {
            Integer i = iterator.next();
            System.out.println(i);
        }

    }
}