Reorganize String | Greedy + Max Heap | DSA Interview Problem
In this video, we solve the Reorganize String problem using a Greedy strategy with Max Heap (Priority Queue) to ensure that no two adjacent characters are the same.
This is a classic DSA interview problem frequently asked in FAANG and top product-based companies, testing your understanding of hashing, heaps, and greedy algorithms.
🚀 What you’ll learn in this video:
Why greedy approach works for this problem
Frequency counting using HashMap
Max Heap (Priority Queue) strategy
How to reinsert characters correctly
Time & space complexity analysis
Clean, interview-ready implementation
🎯 Interview Relevance:
Asked in Amazon, Google, Microsoft
Core problem for String + Heap + Greedy
Important for SDE-I, SDE-II, and backend engineers
📌 If you’re preparing for coding interviews or competitive programming, this problem is must-know.
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⏱️ Timestamps:
00:00 - Introduction
00:16 - Problem Explained with Examples
00:47 - Optimized Approach using Priority Queue and HashMap
02:44 - Code implementation using Priority Queue
07:22 - Conclusion
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