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docs/java/collection/Java集合框架常见面试题.md
@@ -85,6 +85,8 @@ public interface RandomAccess {
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**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。
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+> 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)
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**双向循环链表:** 最后一个节点的 next 指向head,而 head 的prev指向最后一个节点,构成一个环。
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