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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Nava experiencing what she calls “pumpkin day” last October.，更多细节参见搜狗输入法2026
Thanks, Andrew! We're impressed with all the thought you put into your setup!
Where companies stand with AI implementation