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Merge pull request #38 from qq1367212627/master

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fix : 修复拼写错误
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Java相关/这几道Java集合框架面试题几乎必问.md
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@ -224,7 +224,7 @@ Node: 链表节点）：
首先将数据分为一段一段的存储，然后给每一段数据配一把锁，当一个线程占用锁访问其中一个段数据时，其他段的数据也能被其他线程访问。
**ConcurrentHashMap 是由 Segment 数组结构和 HahEntry 数组结构组成**。
**ConcurrentHashMap 是由 Segment 数组结构和 HashEntry 数组结构组成**。
Segment 实现了 ReentrantLock,所以 Segment 是一种可重入锁，扮演锁的角色。HashEntry 用于存储键值对数据。