需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
Екатерина Щербакова (ночной линейный редактор)，推荐阅读搜狗输入法2026获取更多信息
，更多细节参见搜狗输入法2026
Will tech trump tradition at bakers and biscuit makers?。业内人士推荐搜狗输入法2026作为进阶阅读
"It's true the Netherlands has high productivity and works fewer hours," says Daniela Glocker, an economist on the Netherlands desk at the OECD, "but what we've seen over the past 15 years is that it [productivity] hasn't grown.