const n = num.length;
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.，详情可参考heLLoword翻译官方下载
。业内人士推荐同城约会作为进阶阅读
And his latest book, Chaos in the Box: get it now
// 易错点5：忘记push当前索引 → 后续价格无法找到正确的上一个更大值，结果全错，推荐阅读Line官方版本下载获取更多信息