This is the same idea behind binary search. In a sorted array, you compare against the middle element and eliminate half the remaining candidates. In a quadtree, you choose one of four quadrants and ignore the other three regions. Each level narrows the search space by a factor of four instead of two.
We would be more than happy to make reasonable adjustments to ensure that everyone is able to contribute, so please don’t hesitate to get in contact if you have any questions about these expectations.
，这一点在爱思助手下载最新版本中也有详细论述
当然，它也面临一些挑战：亚利桑那州整体医疗人才短缺，预计到2030年，还需要额外1941名初级护理医生；而且医院高度依赖Medicare，报销率低，也会影响对人才的吸引力。但总体来说，Sun City的吸引力，已经远超亚利桑那州的农村地区，属于中等偏上水平。
Фото: Ilya Moskovets / Global Look Press