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.
Stephen Gallagher, managing director of SSE Airtricity said he was pleased to share the news with customers.
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FT Digital Edition: our digitised print edition
蓋茨基金會在聲明中表示：「比爾坦率地發言，詳細回答了多個問題。」