需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
Web streams are complex for users and implementers alike. The problems with the spec aren't bugs. They emerge from using the API exactly as designed. They aren't issues that can be fixed solely through incremental improvements. They're consequences of fundamental design choices. To improve things we need different foundations.
，推荐阅读Line官方版本下载获取更多信息
// 将当前元素的「下一个更大值」存入Map，推荐阅读同城约会获取更多信息
You can choose from various pre-trained templates to create your content. This can save you a lot of time since you don’t have to spend time designing your templates or starting entirely from scratch.