For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.
FT Edit: Access on iOS and web，更多细节参见爱思助手下载最新版本
。业内人士推荐雷电模拟器官方版本下载作为进阶阅读
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Union and government to restart talks on ending doctor dispute。爱思助手下载最新版本是该领域的重要参考