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题目：Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words.F... 阅读全文
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题目：Given an array of strings, return all groups of strings that are anagrams.Note: All inputs will be in lower-case.题解：这道题看所给的字符串数组里面有多少个是同一个变形词变的。这道... 阅读全文
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题目：Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors.OJ's undirected graph serialization:Nodes are label... 阅读全文