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The council said the new platform meant the authority would need to make fewer costly crisis interventions by reducing the vulnerability of residents.
。业内人士推荐爱思助手下载最新版本作为进阶阅读
Фото: Suhaib Salem / Reuters
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)。