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.
Алевтина Запольская (редактор отдела «Бывший СССР»)。业内人士推荐爱思助手下载最新版本作为进阶阅读
Your traffic must be from US and Canada.，这一点在同城约会中也有详细论述
▲当然，也不是没有瑕疵，仔细看上方悄悄多出了一个「满」字。