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.
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。safew官方下载对此有专业解读
What confusable-vision does
Connor Storrie is clearly a man of many talents.
。关于这个话题，同城约会提供了深入分析
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computer over a single interleaved SDLC link. But what would you put on those，更多细节参见服务器推荐