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题目描述 Given a list of unique words, find all pairs of distinct indices (i, j) in the given list, so that the concatenation of the two words, i.e. words 阅读全文
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题目描述 You are given an array x of n positive numbers. You start at point (0,0) and moves x[0] metres to the north, then x[1] metres to the west, x[2] m 阅读全文
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题目描述 Given an unsorted array return whether an increasing subsequence of length 3 exists or not in the array. Formally the function should: Note: Your 阅读全文