# rot90

Rotate array by 90 degrees

### rot90(A)

• It rotates A counterclockwise by 90 degrees.
• Only planes parallel to the plane formed by the first and second dimensions are rotated.

### rot90(A, k)

• It rotates A by k * 90 degrees. It rotates counterclockwise if k > 0, and clockwise if otherwise.
• Only planes parallel to the plane formed by the first and second dimensions are rotated.