Что думаешь? Оцени!
res[i] = stack.length ? count + 1 : count;
。业内人士推荐一键获取谷歌浏览器下载作为进阶阅读
怎样创造政绩？关键靠实干，这是最质朴的方法论，是成就事业的必由之路。
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.