63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54
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)。
，这一点在搜狗输入法2026中也有详细论述
Жители Санкт-Петербурга устроили «крысогон»17:52
"One time I missed half the warm-up because of the queue to get in," he said.
Six planets are set to parade across the sky this weekend in a rare celestial spectacle, experts have said.