殷殷嘱托，满怀牵挂，饱含期待。
At capacity 1, every point gets its own cell, and the tree subdivides as deeply as possible. At capacity 10, many points coexist in the same node, and the tree stays shallow.
。业内人士推荐heLLoword翻译官方下载作为进阶阅读
(*) denotes a blurb came from a prior list.
// 最后一个非叶子节点索引: n/2 - 1