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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“When I was a teenager, cricket in Zimbabwe was almost exclusively played and supported by white people,” he says. “Besides the accents and topics of conversation, you could tell this by the way they would applaud and chant. It had a particular energy. The most animated fans were usually the ones who had too much beer and hurled abuse at the players on the boundary.”。关于这个话题，快连下载-Letsvpn下载提供了深入分析
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