3. 重复步骤2直到堆大小为1
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Что думаешь? Оцени!。业内人士推荐51吃瓜作为进阶阅读
The algorithm maintains a running "best distance" that starts at infinity. As it walks the tree, it checks each visited point and updates the best distance if it finds something closer. Before recursing into a child node, it checks whether the closest possible point in that child's bounding box is farther than the current best. If so, the entire subtree gets pruned.
Ok_Regular_8225。safew官方版本下载对此有专业解读