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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这将是近五年来手机行业规模最大、涨幅最为显著的一轮集体调价。Counterpoint Research预测，3月后中国市场新品手机均价将较2025年同档位机型上涨15%—25%。随着内存成本的频繁波动，2026年中国手机市场或将面临历史上首次一年内多次上调价格的局面。
decisions and operations.
Pakistan now in 'open war' with Afghanistan, defence minister says, after countries trade attacks