HashMap(JDK1.8)源码+底层数据结构分析.md中put方法的流程图，转变红黑树时的疑问
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Assessment
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Newbie friendliness
- 35/100
- Issue type
- Documentation
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- java
- Domain
- documentation
Research direction
Open HashMap(JDK1.8)源码+底层数据结构分析.md and inspect the put-method flowchart referenced in the issue. Compare the diagram with the JDK 1.8 HashMap put flow, including the linked-list insertion, treeifyBin call, modCount update, and resize check. Done when the diagram accurately reflects that control flow.
Written by the indexing model from the issue text.
Description
这里应该是先链表尾插，然后treeifyBin(tab, hash);跳出循环，执行最后面的++modCount;和判断是否需要扩容了吧？
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