Stack - 14 | 394. Decode String
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3 Months DSA for Placements! 🚀 Beginner to Advanced Playlist
🧩 Decode String - LeetCode | Stack-Based Approach Explained 🔍
In this video, we break down the popular LeetCode problem "Decode String" using a clear and intuitive stack-based approach.
👨💻 You’ll learn:
How to handle nested patterns like "3[a2[c]]"
Why we use two stacks (one for counts and one for strings)
Step-by-step dry run of the algorithm
Time & space complexity analysis
Common edge cases to watch out for
Whether you're preparing for coding interviews or brushing up on your data structure skills, this video will help you master the Decode String problem with confidence.
📌 Problem Name: Decode String
📌 LeetCode Number: 394
📌 Difficulty: Medium
👉 Don’t forget to like, comment, and subscribe for more DSA tutorials and LeetCode walkthroughs!
#DecodeString #LeetCode #DSA #Stack #CodingInterview #Java #Python #CTOBhaiya
CHAPTERS
0:00 Introduction
2:05 Intuition of Two Stacks
11:10 Example Walkthrough
20:41 Live Coding of Two Stacks Approach
28:10 Optimise with StringBuilder
30:40 Live Example Walkthrough
33:00 Time & Space Complexity
37:16 Conclusion
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