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11. Rotate Array Left by K | Reversal Algorithm Explained with Intuition 🔥 | DSA in Hindi
Автор: Tech Simplified
Загружено: 2025-12-26
Просмотров: 23
Описание:
In this video, we explain how to rotate an array left by K positions using the Optimal Reversal Algorithm.
Most beginners memorize the steps —
but in this video, we focus on the INTUITION behind why the algorithm works, which is exactly what interviewers expect.
🔍 What you’ll learn in this video:
What does rotate left by K mean
Why naive solutions are inefficient
How to think in blocks (A | B)
Why 3 reversals give correct rotation
Dry run with example
Time & Space Complexity
Interview-ready explanation
⏱️ Complexity:
Time: O(n)
Space: O(1) (In-place)
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