The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
有人会说：“神经可塑性”证明人脑是可以改变的，核心负责人难道不能通过刻意练习来重塑大脑吗？
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Раскрыта цена самой дорогой квартиры в «Москва-Сити»20:44