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.
"I didn't know how things worked, the commute into work, that sort of thing.。关于这个话题，safew官方版本下载提供了深入分析
a phone call to your home branch.。关于这个话题，WPS下载最新地址提供了深入分析
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