摘要:
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the 阅读全文
posted @ 2017-12-02 03:11
jasminemzy
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摘要:
Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example: Example: 1. O(n3)复杂度做。双层f 阅读全文
posted @ 2017-12-02 02:55
jasminemzy
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