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.
Changes directory according to highest-ranked match.，这一点在快连下载安装中也有详细论述
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The unemployment rate rose to 5.2% in the three months to December, from 5.1% in the three months to November, which will also factor into the Bank of England's interest rate decisions.，更多细节参见im钱包官方下载
Engine sleep flag (1 = Sleeping)