Роберт Де Ниро. Фото: Stephane Mahe / Reuters
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It's officially Unpacked week, which means antsy phone buyers are getting several new models to seriously consider. If you're a power user in particular, you may be weighing the new Samsung Galaxy S26 Ultra against the Google Pixel 10 Pro XL, both of which can be argued to offer the best of Android phones in the first half of 2026.，详情可参考WPS官方版本下载
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.