package Lect29Library;

import java.util.*;

public class SetExample {
	public Iterator allStudents(String[] studentListOne, String[] studentListTwo) {
		// HashSet will not order the elements
		HashSet set = new HashSet();

		// TreeSet will order the elements
		// TreeSet set = new TreeSet();
		
		for (int i=0; i<studentListOne.length; i++) {
			System.out.println("adding " + studentListOne[i]);
			set.add(studentListOne[i]);
		}
		
		for (int i=0; i<studentListTwo.length; i++) {
			System.out.println("adding " + studentListTwo[i]);
			set.add(studentListTwo[i]);
		}
		
		return set.iterator();
	}
	
	public static void main(String[] args) {
		String[] cmsc131 = {"John", "Mary", "Rose"};
		String[] psyc100 = {"Mary", "Pete", "Elizabeth"};
		
		SetExample setExample = new SetExample();
		Iterator allStudents = setExample.allStudents(cmsc131, psyc100);
		while (allStudents.hasNext()) {
			System.out.println(allStudents.next());
		}
	}
}