u4e00和\u9fff

引用中提到，u4e00和\u9fff是中文字符的编码范围。具体地说，u4e00表示中文字符的起始编码，而\u9fff表示中文字符的结束编码。这个编码范围可以用来判断一个字符串是否为纯中文。例如，可以使用is_CN函数来判断一个字符串是否只包含中文字符。如果字符串中的字符都在u4e00和\u9fff之间，则可以认为该字符串是纯中文。<span class="em">1</span><span class="em">2</span>
#### 引用[.reference_title]
- *1* [对中文字符的判断](https://blog.csdn.net/devil6636252/article/details/109291904)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* [Java获取几乎全部(U4E00至U9FFF)汉字的拼音](https://download.csdn.net/download/qq_43326552/86060337)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
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