©TCP-tryJAVA

import java.util.*;

public class prog {
	public static void main(String[] args) {
		LinkedList<Integer> lnkList = new LinkedList<Integer>();
		
		lnkList.add(4);
		lnkList.add(2);
		lnkList.add(3);
		lnkList.add(1);
		
		ListIterator<Integer> iter = lnkList.listIterator();
		while (iter.hasNext()) {
			System.out.print(iter.next() + " ");
		}
		System.out.println();
		
		while (iter.hasPrevious()) {
			System.out.print(iter.previous() + " ");
		}
	}
}