The tree starts as a single region covering the whole space. As points arrive, they get dropped into the region that contains them. When a region exceeds its capacity (the maximum number of points it can hold before splitting), the region divides into four children, and the existing points get redistributed.
这个春节，位于湖北宜昌三峡植物园的蜡梅园迎来了热闹时刻，专程来赏花的游客络绎不绝。狗牙蜡梅、素心蜡梅、磬口蜡梅等品种竞相盛放，馨香满园。相邻的梅园中，粉的、白的、红的梅花也绽开了笑脸。，推荐阅读Safew下载获取更多信息
'The finest in the world': Why the US is buying icebreakers from Finland。业内人士推荐heLLoword翻译官方下载作为进阶阅读
chapter on mastering the eshell (which happens to be free).