Matrices pattern
Rotate Image
Given an n x n matrix representing an image, rotate it 90 degrees clockwise in place, modifying the matrix directly without allocating another 2D array. Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 48
- Medium
- 2 approaches
Sign in with Google or GitHub and you land straight on this page. DSA comes with the all labs plan and every ChaiCode batch.
MatricesLeetCode 48
Medium
From the first idea to the best one
- 01 Transpose + reverse rows O(n²)O(1) space
- 02 Direct 4-cycle rotation O(n²)O(1) space
What you will learn
- How to read Rotate Image and spot the matrices pattern in it
- Transpose + reverse rows: O(n²) time, O(1) space
- Direct 4-cycle rotation: O(n²) time, O(1) space
- The pseudocode for each approach, its line lit as the animation runs
- Practice: write your own pseudocode and get it checked
More Matrices
See Rotate Image run, step by step
Sign in and this page opens on the animation, with all 5 Matrices problems beside it.
DSA comes with the all labs plan and every ChaiCode batch.