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.
The team from Pre-Construct Archaeology was working on a building site a few miles from Thetford, Norfolk, when they came across the hoard last year.
。旺商聊官方下载对此有专业解读
Who is Canva best suited for?Canva is a great tool for small business owners, online entrepreneurs, and marketers who don’t have the time and want to edit quickly.
用一句话概括，他此前正是苹果 AI 战略的中轴线人物之一。
Why you should consider fixing your energy tariff nowListen to the full episode on BBC Sounds.