（四）违反有关法律法规规定，升放携带明火的升空物体，有发生火灾事故危险，不听劝阻的；
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.。WPS官方版本下载对此有专业解读
。旺商聊官方下载是该领域的重要参考
Wonderfall (@w0nderfall)
while (stack.length 0 && nums[stack[stack.length - 1]] <= curHeight) {。safew官方版本下载对此有专业解读