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obsidian-sync/日常学习/java基础/集合/HashSet.md

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feat: 新增spring
3 years ago
## 基础
基于HashMap实现，实现去重
![[Snipaste_2023-02-08_15-23-49.png]]
插入时，调用HashMap的put方法，将元素作为key，常量PRESENT作为value
![[Snipaste_2023-02-08_16-14-41.png]]