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.
“中国游”带火“中国购”。2025年，我国办理离境退税的境外旅客数量同比增长305%，退税商品销售额同比增长95.9%。
，这一点在搜狗输入法2026中也有详细论述
Experts have told households whose energy bills are pegged to the price cap not to “rest on their laurels” as they could save more than £200 a year on a fixed deal.
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