// 栈空 → 无更大元素，返回-1；栈非空 → 取栈顶（第一个更大值）
Discovered in December 2024, asteroid 2024 YR4 was briefly considered the “most dangerous asteroid” in decades after scientists initially estimated it had a 3.1% chance of colliding with the Earth in 2032. Closer observations quickly ruled out a “city killer” scenario, but instead astronomers calculated there was a 4.3% chance that the moon lay in the path of impact.。业内人士推荐WPS极速下载页作为进阶阅读
黄仁勋的核心洞察是：计算的本质已发生根本逆转。过去几十年，软件是“预制”的——人类写代码，计算机执行检索。如今AI是“实时生成智能”，能理解、推理、并根据情境动态回应。这意味着整个计算栈必须被重构。由此，他提出了“五层蛋糕”产业模型：能源→芯片→基础设施（AI工厂）→模型→应用。，更多细节参见谷歌
Фото: New Africa / Shutterstock / Fotodom
AI is increasingly becoming more popular. Over half of Americans (56%) use it, according to a 2025 YouGov survey.