描绘自己的王国……

【leetcode】224.basic-calculator（基本计算器） 224.basic-calculator Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the...

【leetcode】30.substring-with-concatenation-of-all-words（串联所有单词的子串） 30.substring-with-concatenation-of-all-words You are given a string, s, and a list of words, words, that are all of the same length. F...

【leetcode】32.longest-valid-parentheses（最长有效括号） 32.longest-valid-parentheses Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses su...

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