Java 初学者:如何将一个链表链接到另一个链表? [英] Java Beginner: How do I link one linked list to another?

问题描述

如果我有:linkedlist1= 1,2,3,4; 和 linkedlist2= 5,6,7;

如果我调用:linkedlist2.set(0,9999)，我是否可以将linkedlist2 附加到linkedlist1 的末尾:linkedlist2.set(0,9999) 它更改为linkedlist2 = [999,6,7] 和 linkedlist1 变成 [1,2,3,4,9999,7,8]; ?

Am I able to attach linkedlist2 to the end of linkedlist1 in such a way if I invoke: linkedlist2.set(0,9999) it changes to linkedlist2 = [999,6,7] and linkedlist1 becomes [1,2,3,4,9999,7,8]; ?

这可能吗?或者我确实需要另一个结构?

Is that possible ? Or I do need another structure ?

以下代码无效:

 List<Double> l1 = new LinkedList<Double>(Arrays.asList(1.0,2.0));
 List<Double> l2 = new LinkedList<Double>(Arrays.asList(3.0,4.0));
 l1.addAll(l2);
 System.out.println(l1);
 l2.set(0, 9.0);
 System.out.println(l1);

输出:

 [1.0, 2.0, 3.0, 4.0]
 [1.0, 2.0, 3.0, 4.0]

推荐答案

Java 提供的标准 LinkedList 类缺乏此功能.

The standard LinkedList classes provided with Java lack this capability.

当 Donal Boyle 发帖时，您可以将一个列表的内容添加到另一个列表中，但这不会像您描述的那样保持链接.

As Donal Boyle posts you can add the contents of one list to another but this doesn't maintain the linkage as your describe.

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