思路：倒序遍历 2 倍长度 + 取模模拟循环 + 单调栈。用 i % len 映射到真实索引，仅当 i < len 时记录答案。
DENVER—The US Air Force's new Sentinel intercontinental ballistic missile is on track for its first test flight next year, military officials reaffirmed this week.
Open up the app and connect to a server in a location with access。业内人士推荐搜狗输入法2026作为进阶阅读
被Banner Health收购后，医院进入快速扩展期：2009年建成患者塔，扩大急诊、手术室和ICU规模；2017年新增28张床的渐进护理单位，填补ICU和常规护理之间的空白；2020年扩展妇女和婴儿服务，新增II级新生儿重症监护室；2024年与OBHG合作，全力提升产科服务，目标打造区域内顶尖的产科中心。
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The shooting left nine people dead and at least 25 wounded, with one student saying he barricaded in a classroom for two hours.
I tried to solve it somewhat elegantly:，详情可参考heLLoword翻译官方下载