栈（stack）是先进后出的数据结构。单调栈在入栈时通过一定规则保持栈内元素有序（单调递增或单调递减），从而把「找左侧/右侧第一个更大/更小元素」从 O(n²) 降到 O(n)。
Almost all coal-fired power plants in the US had the ability to comply with rules limiting their emission of dangerous pollutants such as mercury that can cause brain damage in children. Despite this, Donald Trump’s administration decided to demolish the standards anyway.
。WPS官方版本下载对此有专业解读
10 monthly gift articles to share。关于这个话题，heLLoword翻译官方下载提供了深入分析
Цены на нефть взлетели до максимума за полгода17:55。91视频是该领域的重要参考
Visit the North Sea oil field used to store greenhouse gas