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Snailclimb merged 1 commit into from
Oct 2, 2019
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Update 数据结构.md #486

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2 changes: 1 addition & 1 deletion docs/dataStructures-algorithms/数据结构.md
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Expand Up @@ -47,7 +47,7 @@ Queue 用来存放 等待处理元素 的集合，这种场景一般用于缓冲
### 什么是 Set
Set 继承于 Collection 接口，是一个不允许出现重复元素，并且无序的集合，主要 HashSet 和 TreeSet 两大实现类。

在判断重复元素的时候，Set 集合会调用 hashCode()和 equal()方法来实现。
在判断重复元素的时候，HashSet 集合会调用 hashCode()和 equal()方法来实现；TreeSet 集合会调用compareTo方法来实现。

### 补充：有序集合与无序集合说明
- 有序集合：集合里的元素可以根据 key 或 index 访问 (List、Map)
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