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.
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Here are today's Connections: Sports Edition categoriesNeed a little extra help? Today's connections fall into the following categories:
如阿武所说，电车独有的优势，使得其成为了越来越多小镇青年春节返乡或者自驾出游的选择。。同城约会对此有专业解读