[FIXED] Check if a numpy array is sorted

Issue

I have a numpy array and I like to check if it is sorted.

>>> a = np.array([1,2,3,4,5])
array([1, 2, 3, 4, 5])

Solution

np.all(a[:-1] <= a[1:])

Examples:

is_sorted = lambda a: np.all(a[:-1] <= a[1:])

>>> a = np.array([1,2,3,4,9])
>>> is_sorted(a)
True

>>> a = np.array([1,2,3,4,3])
>>> is_sorted(a)
False

Answered By - luca