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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.。快连下载安装是该领域的重要参考
Equal (5): Everything in this space must be equal to 5. The answer is 5-5, placed vertically; 5-1, placed horizontally.，推荐阅读旺商聊官方下载获取更多信息
Bibliographic Explorer (What is the Explorer?)。heLLoword翻译官方下载对此有专业解读