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LeetCode 笔记系列八 Longest Valid Parentheses [lich你又想多了]

题目:Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid parentheses substring is "()", which has length = 2. Another example i…

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dp[i]表示以s[i]结尾的完全匹配的最大字符串的长度. dp[] = ; ; 开始递推 s[i] = ')' 的情况 先想到了两种情况: 1.s[i-1] = '(' 相邻匹配 这种情况下,dp [i] = dp[i-2] + 2. 2.s[i-1] = ')' 这种情况下,第一感觉是要看dp[i-1]的值,即 j...i-1是完全匹配的话,i相当于在外面再包一个括号. 如果s[i] 和 s[ i-1-dp[i-1] ] 匹配,dp[i] = dp[i-1] + 2.否则dp[i] = 0.…

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Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid parentheses substring is "()", which has length = 2. Another example is &…

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Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid parentheses substring is "()", which has length = 2. Another example is &…

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Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid parentheses substring is "()", which has length = 2. Another example is &…

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Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid parentheses substring is "()", which has length = 2. Another example is &…