记忆技巧：找「更大」→ 弹掉 ≤ 当前的（栈顶保留比当前大的）；找「更小」→ 弹掉 ≥ 当前的；找「相等可接受」→ 用 < / ，否则用 <= / =。
Why is Clavicular so popular?GQ just called Clavicular the most famous looksmaxxer in the world. Mere months ago, most people didn't know who this man was, and now he's become a media darling, with multiple features and photoshoots in prominent outlets, all while his profile continues to rise. How did this happen?
，这一点在搜狗输入法2026中也有详细论述
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Instead of tee() with its hidden unbounded buffer, you get explicit multi-consumer primitives. Stream.share() is pull-based: consumers pull from a shared source, and you configure the buffer limits and backpressure policy upfront.