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.
length = byteArray.size.toULong()
，这一点在91视频中也有详细论述
六、批准免去时侠联的重庆市人民检察院检察长职务；
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