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Елизавета Гринберг (редактор)
，更多细节参见同城约会
└──────┬────────┬───────┘。旺商聊官方下载是该领域的重要参考
A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.，推荐阅读safew官方版本下载获取更多信息