1. 分解：将数组递归分成两半，直到只剩1个元素
The tree is rebuilt every frame. For scenes of this scale, quadtree construction is fast enough to rebuild from scratch each frame, though larger simulations may benefit from incremental updates. Each particle queries its neighborhood for potential collisions, typically checking only 5 to 15 candidates instead of all 40. Red highlights indicate colliding pairs.。业内人士推荐旺商聊官方下载作为进阶阅读
。WPS下载最新地址对此有专业解读
https://feedx.net，详情可参考WPS官方版本下载
for (let i = 0; i < n; i++) {