🚨 Most Underrated DSA Concept: SLIDING WINDOW
If you’re prepping for interviews, this is a MUST-KNOW.
DSA isn’t just about solving problems — it’s about solving them smartly.
🧠 Sliding Window turns brute force O(n²) into O(n) magic!
✨ Used in:
✅ Max subarray sum
✅ Longest unique substring
✅ Anagram count
✅ Binary array flips… and more!
🎯 Real Interview Trick:
Once you understand the “window,”
You’ll slide right into your dream job 💼
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