PYTHON

rotate matrix python

numpy.rot90(array, k=number_rotations, axes=(0, 1))

Make Rotation matrix in Python

In [x]: theta = np.radians(30)
In [x]: c, s = np.cos(theta), np.sin(theta)
In [x]: R = np.array(((c, -s), (s, c)))
Out[x]: print(R) 
[[ 0.8660254 -0.5      ]
 [ 0.5        0.8660254]]

matrix rotation in python

def rotate(matrix):
    rows = len(matrix)
    cols = len(matrix[0])
    res = []
    for i in range(cols):
        temp = []
        for j in range(rows):
            temp.append(matrix[j][i])
        res.append(temp[::-1])

    return res


matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
print(rotate(matrix))