🔥 LeetCode 32 | Longest Valid Parentheses | C++ Solution | Stack Approach

In this video, we solve LeetCode Problem 32 – Longest Valid Parentheses using an efficient Stack-based approach in C++. The goal is to find the length of the longest valid (well-formed) parentheses substring in the given string. 📌 Problem: Longest Valid Parentheses 📌 LeetCode: #32 📌 Language: C++ 📌 Approach: Stack 📌 Time Complexity: O(n) 📌 Space Complexity: O(n) 🧠 What You'll Learn • How to use a stack to track parentheses indices • How to identify valid and invalid parentheses • How to calculate the length of the longest valid substring • Common edge cases and mistakes • How to optimize the solution to O(n) time 💡 Example Input: ")()())" Output: 4 The longest valid parentheses substring is "()()". If you're preparing for LeetCode, coding interviews, DSA, or placement tests, this problem is an important one for understanding Stacks and String problems. 👍 If you found the explanation helpful, Like, Share & Subscribe for more daily DSA and LeetCode solutions! 🔔 Daily LeetCode Challenge | C++ | DSA | Interview Preparation #LeetCode #LeetCode32 #LongestValidParentheses #DSA #CPlusPlus #Cpp #Stack #CodingInterview #LeetCodeSolutions #DailyLeetCode #Programming #DataStructures #Algorithms