LeetCode 75 C++ | Step-by-Step Solutions (LAN Academy) - Decode String in C++ | LeetCode 394 Explained Clearly

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5.5 hours of video
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Full Transcript

How can we decode strings like "3[a2[c]]" into their expanded form? In this video, we solve LeetCode 394 – Decode String using stack-based logic in C++. What you’ll learn — How to decode nested brackets using a stack — Why two stacks (for strings and numbers) simplify the logic — Clean, readable C++ implementation step by step Time complexity: O(n) Space complexity: O(n) Timestamps 0:00 – Problem explanation 0:45 – Example walkthrough 2:00 – Stack-based decoding logic 4:00 – Full C++ solution 5:30 – Final notes

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