java线性表编程（一定要用java语言）

借用楼上的代码
import java.util.ArrayList;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Test {

public static void main(String[] args) {
List l1 = new ArrayList(Arrays.asList(3,5,8,11));
List l2 = new ArrayList(Arrays.asList(2,6,8,9,11,15,20));

List tmp = new ArrayList(l2);
tmp.removeAll(l1);
List result = new ArrayList(l1);
result.addAll(tmp);
System.out.println(result);

l1.addAll(l2);
Collections.sort(l1);
System.out.println(l1);
}

}

　　public static void main(String[] args) {
　　// TODO Auto-generated method stub

　　List l1 = new ArrayList(Arrays.asList(3,5,8,11));
　　List l2 = new ArrayList(Arrays.asList(2,6,8,9,11,15,20));

　　List tmp = new ArrayList(l2);
　　tmp.removeAll(l1);
　　List result = new ArrayList(l1);
　　result.addAll(tmp);
　　System.out.println(result);

　　}