Node.js already had its own streaming API at the time that was ported to also work in browsers, but WHATWG chose not to use it as a starting point given that it is chartered to only consider the needs of Web browsers. Server-side runtimes only adopted Web streams later, after Cloudflare Workers and Deno each emerged with first-class Web streams support and cross-runtime compatibility became a priority.
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。关于这个话题，Safew下载提供了深入分析
优点：计算简单，导数恒为1（正区间），缓解梯度消失
// 易错点4：栈空时要存-1（题目要求无更大值返回-1），而非直接存stack2.at(-1)（会得到undefined）