She said: "When you play someone as strong as [Torchwood's] Gwen Cooper, someone so recognisable, it's quite difficult to come away from that or for other people to see you do anything differently.
{ 22, 6, 4, 16, 43, 57, 63, 53 },
，这一点在51吃瓜中也有详细论述
Doesn't provide membership.
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。