比如，“换句话说”=“in other words”。 今天我们来学习in other words的其它表达。 今年有个网络新词叫“真香怪”，不熟悉的这个词的人会问：什么是“真香怪”？换句话说，就是：发誓不去做某件事但最后还是去做了的人。比如，发誓说减肥不吃晚饭，结果看到 ...

Given two words ( beginWord and endWord), and a dictionary's word list, find all shortest transformation sequence(s) from beginWord to endWord, such that: Only one letter can be changed at a time Each ...

Given a non-empty string s and a dictionary wordDict containing a list of non-empty words, determine if s can be segmented into a space-separated sequence of one or more dictionary words.