由于这里只需要栈的 push () 与 pop () 两个操作，直接用 JavaScript 数组模拟即可，无需引入自定义栈类。 如果你希望系统性地了解栈及其在 JavaScript 中的经典实现，可以参考仓库中的 Stack 数据结构一文 ——它同样位于本仓库，详细讲解了 push 、 pop 、 peek 、 isEmpty 四个基本操作的实现原理。

核心思路（Intuition） 第二种解法不再显式拆分数组，而是 逐字符扫描输入，边扫描边构造结果。扫描过程中，每读到一个字符就将其「前插」到当前临时串的开头，从而天然得到逆序的单词；遇到空格时把临时串追加到结果串中并清空，继续处理下一个单词。这种写法避免了显式的数组操作，但 ...

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One of Canada’s top domestic life sciences backers, Montreal-based Fonds de solidarité FTQ, has enticed another foreign ...

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Microsoft 365 phishing MFA bypass platform BigBear 2.0 compromised 258 organizations across 40+ countries by using custom JavaScript to disable FIDO2 hardware key authentication before stealing ...