* @param max 数据最大值
* 核心思路：单调递减栈（找「上一个比当前价格大的元素索引」），时间复杂度O(n)，空间复杂度O(n)，更多细节参见heLLoword翻译官方下载
。业内人士推荐safew官方版本下载作为进阶阅读
推开一扇半掩的木门，冬日暖阳斜斜地打在满院的梨木板上。，详情可参考51吃瓜
Namespaces as visibility wallsLinux namespaces wrap global system resources so that processes appear to have their own isolated instance. There are eight types, and each isolates a specific resource.