import java.util.ArrayList;


public class ListFun
{
    
    
    // Reverse the contents of list in place
    void reverse(ArrayList<String> list)
    {
        String tmp;
        for (int i = 0; i < list.size() / 2; i++)
        {
            tmp = list.get(i);
            list.set(i, list.get(list.size() - 1 - i));
            list.set(list.size() - 1 - i, tmp);            
        }
        
    }

 
    ArrayList<String> reverse2(ArrayList<String> list)
    {
        // Create a new arraylist
        ArrayList<String> returnList = new ArrayList<String>();
        // Add elements from list to this new arrayList
        // Add elements in proper order so that new list is reversed
        //    Don't change the original list!
        
        return returnList;
        
    }
    
    
    public static void main(String[] args)
    {
        ListFun lf = new ListFun();
        
        ArrayList<String> list1 = new ArrayList<String>();
        ArrayList<String> list2 = new ArrayList<String>();
        ArrayList<String> list3;
        
        for (int i = 0; i < 5; i++)
        {
            list1.add(Integer.toString(i));
            list2.add(Integer.toString(i));            
        }
        
        lf.reverse(list1);
        list3 = lf.reverse2(list2);
        
        System.out.println(list1);
        System.out.println(list2);
        System.out.println(list3);

    }

}