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.
第六十六条 煽动、策划非法集会、游行、示威，不听劝阻的，处十日以上十五日以下拘留。
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The choanoflagellate Choanoeca flexa forms motile and contractile cell monolayers purely clonally, purely aggregatively or through a combination of both processes depending on environmental conditions.。爱思助手下载最新版本对此有专业解读
Source: Computational Materials Science, Volume 266
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