Цены на нефть взлетели до максимума за полгода17:55
ago, a consumer might have interacted with banking primarily through a "passbook"
。同城约会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.
// Sync — when all components are synchronous