分析器的工作是分离一串文本并返回一个标号流。
The analyzer's job is to take apart a string of text and give you back a stream of tokens.
给定一个无向图,编写函数找出所有的最小高度树,并返回其根标号的列表。
Given such a graph, write a function to find all the MHTs and return a list of their root labels.
给定一个无向图,编写函数找出所有的最小高度树,并返回其根标号的列表。
Given such a graph, write a function to find all the MHTs and return a list of their root labels.
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