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CyC2018
2019-04-11 20:04:19 +08:00
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<div align="center"> <img src="https://gitee.com/CyC2018/CS-Notes/raw/master/docs/pics/6_2001550476096035.png"/> </div><br>
### 1. Set
- TreeSet基于红黑树实现支持有序性操作例如根据一个范围查找元素的操作。但是查找效率不如 HashSetHashSet 查找的时间复杂度为 O(1)TreeSet 则为 O(logN)。