"There were days I cried because I couldn't find my slippers."
US Premarket Movers: CoreWeave, Dell, Flutter, Kore, NCR Atleos
，更多细节参见搜狗输入法下载
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)。
There are two types of bats at Guestwick: Common Pipistrelles and Natterer's. They roost high up in the rafters.