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Daily LeetCode Challenge #2267 | Valid Parentheses String Path | Java | 29-09-2026

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Daily LeetCode Challenge #2267 | Valid Parentheses String Path | Java | 29-09-2026

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SkillSpring
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230 просмотров · 2 нед. назад
🚀 Daily LeetCode Challenge #2267 – Check if There Is a Valid Parentheses String Path Welcome to another Daily LeetCode Challenge by SkillSpring! 🌱 📅 Date: 29-09-2026 💻 Language: Java 🧩 Problem: #2267 – Check if There Is a Valid Parentheses String Path In this video, we solve this challenging Grid + DFS + Memoization problem with a clear, step-by-step explanation. We’ll understand how to move from the top-left cell to the bottom-right cell while ensuring that the parentheses formed along the path remain valid. 💡 Key Idea At every cell, we keep track of: 📍 Current row and column 🔢 Current parentheses balance ➡️ Move right or down ✂️ Prune invalid paths when the balance becomes negative 🧠 Use memoization to avoid solving the same state repeatedly 📚 What You'll Learn ✅ Understand the problem statement ✅ Valid parentheses concept ✅ Grid traversal ✅ DFS / Recursion ✅ Backtracking ✅ Memoization / DP ✅ State = row + column + balance ✅ Pruning invalid paths ✅ Java implementation ✅ Time & Space Complexity 🔥 One LeetCode problem every day → stronger DSA skills every day! 👍 Like the video 💬 Comment your approach 🔔 Subscribe to SkillSpring for Java, DSA & Daily LeetCode challenges. #LeetCode #LeetCode2267 #ValidParentheses #Java #DSA #DFS #Memoization #DynamicProgramming #Backtracking #Grid #Recursion #Coding #Programming #SkillSpring #DailyLeetCode #29September2026