Generate Parentheses - LeetCode 22 | Backtracking with Validity in JavaScript | Day 40

Описание: 🎯 Day 40 of My LeetCode Journey | Generate Parentheses (LeetCode 22)

In this video I solve LeetCode #22 – Generate Parentheses using backtracking with pruning in JavaScript.

🔗 Problem Link: https://leetcode.com/problems/generat...

📌 PROBLEM SUMMARY:
Given n pairs of parentheses, generate all combinations of well‑formed (balanced) parentheses.

EXAMPLES:
• n = 1 → ["()"]
• n = 2 → ["(())","()()"]
• n = 3 → ["((()))","(()())","(())()","()(())","()()()"]

💡 KEY CONCEPTS:
✅ Backtracking with Validity Pruning
✅ left/right counters (left ≤ n, right ≤ left)
✅ Catalan number pattern
✅ DFS tree visualization

📊 COMPLEXITY:
Time: O(4ⁿ/√n) ≈ Catalan
Space: O(n) recursion stack

🏷️ DIFFICULTY: Medium
🔖 TOPICS: String, Backtracking, Recursion

🔗 RELATED VIDEOS:
Day 37: Subsets (LeetCode 78) –    • Subsets - LeetCode 78 | Backtracking Expla...  
Day 38: Combination Sum (LeetCode 39) –    • Combination Sum - LeetCode 39 | Backtracki...  
Day 39: Subsets II (LeetCode 90) –    • Subsets II - LeetCode 90 | Backtracking wi...  

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📚 MY LEETCODE JOURNEY PLAYLIST:
   • Leetcode  

🤝 CONNECT WITH ME:
• GitHub: https://github.com/ashwinikemshetty
• LinkedIn:   / ashwinikemshetty  

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