（三）案件情况疑难复杂、涉及多个法律关系的。
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。
，这一点在同城约会中也有详细论述
Beyond the obvious engineering effort that has gone into creating one of the slimmest phones ever made, the Air is a reductive exercise that boils down the iPhone into the absolute essentials in a premium body.
#!/usr/bin/env bash