const n = arr.length;
The dashed circle shows the current best distance. As the algorithm finds closer points, the circle shrinks, which causes more subtrees to fail the "could contain a closer point?" test and get pruned. The search usually gets cheaper as it progresses.，详情可参考旺商聊官方下载
，推荐阅读雷电模拟器官方版本下载获取更多信息
Ghost in the machine，这一点在safew官方版本下载中也有详细论述
Health Secretary Wes Streeting said: "We are fixing the front door to the NHS. Many more patients with urgent needs will be able to get an appointment the day they contact their practice."