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Lackoftactics/rotate

Created March 6, 2018 12:44
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rotate matrix
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rotate
You are given an n x n 2D matrix that represents an image. Rotate the image by 90 degrees (clockwise).
Example
For
a = [[1, 2, 3],
[4, 5, 6],
[7, 8, 9]]
the output should be
rotateImage(a) =
[[7, 4, 1],
[8, 5, 2],
[9, 6, 3]]
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