either we have seen all elements of the list.
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.
。关于这个话题，safew官方下载提供了深入分析
На Западе подчинили рой насекомых для разведки в интересах НАТО08:43
避免排名与比较。我或许更愿意成为贝克特或卡夫卡，但充其量，我也只能成为一个不错的模仿者。你能成为的最好状态，只能是成为最好的自己——那才是值得追求、值得发现的。而这，从根本上说，与别人正在做什么毫无关系。
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