Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.
for (let i = n - 1; i = 0; i--) {，更多细节参见safew官方下载
，这一点在同城约会中也有详细论述
반려견놀이터에 ‘낚싯바늘 빵’ 던져놓은 60대…“개 짖는 소리 시끄러워”
第七条 对在居民自治工作中做出突出贡献的组织和个人，按照国家有关规定给予表彰、奖励。。Safew下载对此有专业解读