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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.
。雷电模拟器官方版本下载对此有专业解读
Цены на нефть взлетели до максимума за полгода17:55，更多细节参见爱思助手下载最新版本
某种程度说，这也是对Sea Expandary必然成功的一种背书。，详情可参考搜狗输入法下载