The quadtree is the two-dimensional case of a broader family of space-partitioning data structures. Octrees extend the same idea to three dimensions (splitting cubes into eight children), KD-trees use alternating axis-aligned splits (splitting along x, then y, then x again), and R-trees group nearby objects into bounding rectangles. Each variant makes different tradeoffs between construction time, query speed, and update cost.
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Nature, Published online: 27 February 2026; doi:10.1038/d41586-026-00538-4
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，这一点在搜狗输入法2026中也有详细论述
Олеся Мицкевич (Редактор отдела «Силовые структуры»)
// 步骤2：按位置降序排序（离终点越近的车越先处理），更多细节参见heLLoword翻译官方下载