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The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.。谷歌浏览器【最新下载地址】是该领域的重要参考
* 时间复杂度: O(n²) 最好: O(n) 空间复杂度: O(1) 稳定: ✓，这一点在safew官方版本下载中也有详细论述
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