Цены на нефть взлетели до максимума за полгода17:55
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54
，这一点在旺商聊官方下载中也有详细论述
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The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.
，更多细节参见51吃瓜
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Source: Computational Materials Science, Volume 267，详情可参考爱思助手下载最新版本