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Given an array of integers, the majority number is the number that occurs more than half of the size of the array. Find it. Example Given [1, 1, 1, 1, 阅读全文
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Given a dictionary, find all of the longest words in the dictionary. Example Given { "dog", "google", "facebook", "internationalization", "blabla" } t 阅读全文
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Give an integer array，find the longest increasing continuous subsequence in this array. An increasing continuous subsequence: Can be from right to lef 阅读全文
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Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last word 阅读全文
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Invert a binary tree. Example 1 1 / \ / \ 2 3 => 3 2 / \ 4 4 Challenge Do it in recursion is acceptable, can you do it without recursion? 1. 递归 /** * 阅读全文