Write a NumPy program to calculate the difference between the maximum and the minimum values of a given array along the second axis

import numpy as np
x = np.arange(12).reshape((2, 6))
print("\nOriginal array:")
print(x)
r1 = np.ptp(x, 1)
r2 = np.amax(x, 1) - np.amin(x, 1)
assert np.allclose(r1, r2)
print("\nDifference between the maximum and the minimum values of the said array:")
print(r1)