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Update Java集合框架常见面试题.md #1420

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2 changes: 1 addition & 1 deletion docs/java/collection/Java集合框架常见面试题.md
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Expand Up @@ -135,7 +135,7 @@ Java 集合框架如下图所示：

**双向链表：** 包含两个指针，一个 prev 指向前一个节点，一个 next 指向后一个节点。

> 另外推荐一篇把双向链表讲清楚的文章：[https://juejin.im/post/5b5d1a9af265da0f47352f14](https://juejin.im/post/5b5d1a9af265da0f47352f14)
> 另外推荐一篇把双向链表讲清楚的文章：[https://juejin.cn/post/6844903648154271757](https://juejin.cn/post/6844903648154271757)
![双向链表](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-6/双向链表.png)

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