Силовые структуры
• （本文仅为作者个人观点，不代表本报立场）
，这一点在搜狗输入法2026中也有详细论述
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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.