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题目 A linked list consists of a series of structures, which are not necessarily adjacent in memory. We assume that each structure contains an integer k 阅读全文
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题目 Given a stack which can keep M numbers at most. Push N numbers in the order of 1, 2, 3, ..., N and pop randomly. You are supposed to tell if a give 阅读全文
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题目 Given two strings S1 and S2 , S=S1 −S2 is defined to be the remaining string after taking all the characters in S2 from S1 . Your 阅读全文