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.
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“十五五”开局之年，坚持创新驱动，全面深化改革，将夯筑起中国经济应对变局、开拓新局的坚实支撑。
Charging speeds remain largely unchanged. The Galaxy S25 supports up to 25W wired charging, up to 15W wireless charging and 4.5W reverse wireless charging, and the Galaxy S26 stays in the same general range.