持有对象 练习12

将第一个表反序插入第二个表

import java.util.*;

public class Ex12 {
 public static void main(String[] args) {
  List<Integer> li1 =
   new ArrayList<Integer>(Arrays.asList(0, 1, 2, 3, 4));
  List<Integer> li2 =
   new ArrayList<Integer>(Arrays.asList(5, 6, 7, 8, 9));
  // start it1 at the end:
  ListIterator<Integer> it1 = li1.listIterator(5);
  ListIterator<Integer> it2 = li2.listIterator();
  System.out.println("li1: " + li1);
  System.out.println("li2: " + li2);
  // now use it2 to re-set li2
  while(it2.hasNext()) {
   it2.next();
   it2.set(it1.previous());
  }
  System.out.println("li1: " + li1);
  System.out.println("li2: " + li2);

 }
}
 

 

输出

G:/text/Holding>java Ex12
li1: [0, 1, 2, 3, 4]
li2: [5, 6, 7, 8, 9]
li1: [0, 1, 2, 3, 4]
li2: [4, 3, 2, 1, 0]