import numpy as np

oceny = np.array([1,4,2,4,5,3,4,2,1,4,4,5,5,6,2,1,4,5])

print(np.round(oceny.mean(),1))

print(np.round(36,-1))

print(np.sort(np.sort(oceny)))

print(np.random.shuffle(oceny))

macierz = np.array([[8,4,1],[3,1,4],[9,7,6]])

print(macierz.shape)
macierz  = macierz.reshape(1,9)
print(macierz.shape)

macierz2 = np.array([[8,4,1],[3,1,4],[9,7,6],[5,3,2]])
print(macierz2)
macierz2 = macierz2.transpose()
print("\n")
print(macierz2)
oceny2 = np.array([1,4,2,4,5,3,4,2,1,4,4,5,5,6,2,1,4,5], "U")

print(oceny2)