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Longest Valid Parentheses

hard Solve on LeetCode

Last edited: August 2, 2025

Problem
Examples
Solution
Method 1 – Stack-Based Linear Scan
Intuition
Approach
Code
Complexity
Method 2 – Two-Pass Linear Scan (O(1) Space)
Intuition
Approach
Code
Complexity
Method 3 – Dynamic Programming
Intuition
Approach
Code
Complexity
Dry Run

Related Tags

dynamic-programming kadane leetcode longest parentheses string todo

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