Раскрыты подробности похищения ребенка в Смоленске09:27
* @param arr 待排序数组
，这一点在safew官方版本下载中也有详细论述
typedef struct Node {
There's a tradeoff: a lower capacity means you can skip more space during queries (you zoom in faster), but the tree has more nodes and uses more memory. A higher capacity means fewer nodes but each node requires checking more points linearly. As a starting point, capacities between 4 and 16 are reasonable defaults, though the best value depends on your data distribution and query patterns.