// 2. 维护单调递减栈:弹出所有≤当前价格的索引(这些索引对应的价格无法成为后续价格的「上一个更大值」)
Полина Кислицына (Редактор),这一点在搜狗输入法2026中也有详细论述
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In JavaScript, the natural primitive for "a sequence of things that arrive over time" is already in the language: the async iterable. You consume it with for await...of. You stop consuming by stopping iteration.