Topological Sorting - Find Shortest String Character Order - 我的博客 - ITeye技术网站


Topological Sorting - Find Shortest String Character Order - 我的博客 - ITeye技术网站

You are given N subsequences(not necessarily contiguous) of a string. Find the shortest possible string which has distinct lower case letters, with the given subsequences. The solution is guaranteed to exist. 


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