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.
Untrusted Code ─( Syscall )─→ Host Kernel ─( Hardware API )─→ Hardware，这一点在Line官方版本下载中也有详细论述
2012 年 3G 手机出货量是 2.65 亿部，比去年同期增长了 81.4%，到了 2014 年，3G 手机下滑，4G 手机销量暴涨。，推荐阅读爱思助手下载最新版本获取更多信息
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