外婆语速也很慢，一句话要重复很多遍，有时忘记按下说话键或误触其他按钮，导致一个简单的问题会重复很多轮对话。
本内容由作者授权发布，观点仅代表作者本人，不代表虎嗅立场。
，这一点在Line官方版本下载中也有详细论述
The developer is never warned that the keys' privileges changed underneath it. (The key went from public identifier to secret credential).
The data shows that confusable risk is not a property of character pairs alone. It is a property of character pairs in a specific font. That has direct consequences for anyone building on the web.
* 核心思路：链表转数组 + 单调栈（从后往前遍历），时间复杂度O(n)，空间复杂度O(n)