What do we know about the two bids?
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.
，更多细节参见WPS官方版本下载
Author(s): Othmane Baggari, Halima Zaari, Outmane Oubram, Abdelilah Benyoussef, Abdallah El Kenz，详情可参考heLLoword翻译官方下载
Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.。关于这个话题，服务器推荐提供了深入分析