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.
如今特區政府提交立法會的還只是討論文件，而非立法草案。新政能否準時在年中起跑仍待觀察，但香港環境及生態局局長謝展寰承諾，局方將在首次發牌半年後檢視情況，決定會否放寬還是收緊法律。
。搜狗输入法2026对此有专业解读
香港大學經濟及工商管理學院講師阮穎嫻博士說：「自由市場做生意，該讓他們自行選擇，不該有限額。」
Maximum Transparency
Picogo Qi2 25W Magsafe Portable Charger