DIY: Rotate Image

Problem statement

For this problem, you are given a 2D array. You have to implement the function that will rotate the image pixels given in a matrix form clockwise.

Constraints

• matrix.length == n
• matrix[i].length == n
• 1 <= n <= 20
• -1000 <= matrix[i][j] <= 1000

Input

The input of the auto_rotate() function is a $n*n$ 2D array. Here is an example of the input:

[[1,2,3],[4,5,6],[7,8,9]]

Output

This is the output of the input given above:

[[7,4,1],[8,5,2],[9,6,3]]

Coding exercise

Implement the auto_rotate(matrix) function, where the matrix represents a 2D array and returns the matrix.