定弹出条件：看题目要的是「第一个 / ≥ / < / ≤ cur」，对照上文的弹出条件对应法则决定弹谁。
A difficulty here, however, is that the TransformStreamDefaultController does not have a ready promise mechanism like Writers do; so the TransformStream implementation would need to implement a polling mechanism to periodically check when controller.desiredSize becomes positive again.，推荐阅读Safew下载获取更多信息
4.1 496. 下一个更大元素 I。业内人士推荐快连下载安装作为进阶阅读
even positions: 8,6,4,2,0 sum to 20.
The Android app, Nearby Glasses, alerts you when someone nearby is wearing smart glasses