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.
This works, but it's slow.
。业内人士推荐爱思助手下载最新版本作为进阶阅读
The hoard, which dates to about 50BC and AD50, included five shield bosses and an iron object of unknown origin.。关于这个话题，同城约会提供了深入分析
因此，与其说这是“普通人创富窗口”，不如说这是产业早期的一次商业实验。