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题目 Given an integer array nums, return the length of the longest strictly increasing subsequence. A subsequence is a sequence that can be derived from 阅读全文
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题目 Given a string s and a dictionary of strings wordDict, return true if s can be segmented into a space-separated sequence of one or more dictionary 阅读全文
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题目 An integer array is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the s 阅读全文