java - 如何制作从列表末尾开始的列表迭代器

Question

我有一个家庭作业问题要求我制作一个从列表末尾开始的列表迭代器。我不知道该怎么做。这是代码

public class LinkedListTester7
{
    public static void main(String [] args)
    {
        LinkedList<Integer> list = new LinkedList<Integer>();
        for (int i = 0 ; i < 100 ; i = i + 2)
            list.add(i) ;
        //-----------Start below here. To do: approximate lines of code = 3
        // 1. make a list iterator that starts at the end of the list ;
        ListIterator<Integer> litr = list.listIterator();
        //2.  while hasPrevious ;
        while (litr.hasPrevious()) {
            //3. print what is returned by previous() followed by a blank without a newline  
            System.out.println(litr.previous()+ " ");
        }
        //-----------------End here. Please do not remove this comment.     Reminder: no changes outside the todo regions.
        System.out.println() ;
    }
}

Answer 1

阅读 java.util.List API 文档...

ListIterator<Integer> litr = list.listIterator(list.size());