midArrays
How do you rotate an array?
Updated Apr 28, 2026
Short answer
Rotate by reversing parts of array.
Deep explanation
Rotation can be done using reversal algorithm in O(n) time and O(1) space.
Real-world example
Rotating logs or circular buffers.
Common mistakes
- Using extra space unnecessarily.
Follow-up questions
- Why reverse?
- Time complexity?