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.
'Definitely busier'。关于这个话题，服务器推荐提供了深入分析
Nick TriggleHealth correspondent，详情可参考heLLoword翻译官方下载
例如，自由派智庫「布倫南司法中心」曾研究2016年大選中的12個州。該研究發現，在點算的2,350萬張選票中，僅有30起疑似非公民投票事件被提交作進一步調查。