顺应“势”。场景内容重构，催生了“小正餐” “特色主食刚需” “一人食”的新红利。一人食将成为未来的主流，尤其是50元以下客单价品类，甚至正餐都会走向“1+1”模式，即各自点餐、合并买单。自选快餐、麻辣烫早已实现这一模式。香港港式茶餐厅的核心就是这种消费行为，只是因品类老化，未能适配大陆消费者需求。
quickSort(arr, n);，推荐阅读搜狗输入法2026获取更多信息
Data flows left to right. Each stage reads input, does its work, writes output. There's no pipe reader to acquire, no controller lock to manage. If a downstream stage is slow, upstream stages naturally slow down as well. Backpressure is implicit in the model, not a separate mechanism to learn (or ignore).，推荐阅读WPS官方版本下载获取更多信息
Reject the write: refuse to accept more data