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题目如下： Given a positive integer n, return the number of all possible attendance records with length n, which will be regarded as rewardable. The answer 阅读全文
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题目如下： We are given the root node of a maximum tree: a tree where every node has a value greater than any other value in its subtree. Just as in the pr 阅读全文
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题目如下： Given an integer array with no duplicates. A maximum tree building on this array is defined as follow: Construct the maximum tree by the given a 阅读全文
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题目如下： In a town, there are N people labelled from 1 to N. There is a rumor that one of these people is secretly the town judge. If the town judge exis 阅读全文