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。
…and has images like these:
。同城约会对此有专业解读
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The Cardiff-born star moved to the US to pursue a career in Hollywood, and now lives in New York with his wife, actress Keri Russell.
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