I want to sort the subarrays in a NumPy array that I have according to their length-CodePudding

I want to sort the sub-arrays in a NumPy array that I have according to their length.

For example my array is

myArray = [[1,2,3,4,5,6,7],
           [8,9,10,11],
           [12],
           [13],
           [14,15,16,17,18,19,20,21,22,23,24]]

and I want to sort them as

myArray = [[14,15,16,17,18,19,20,21,22,23,24],
           [1,2,3,4,5,6,7],
           [8,9,10,11],
           [12],
           [13]]

Is there any possible way to doing this?

The content of my sub-arrays should not change.

CodePudding user response：

That is a simple list of lists - to do what you need:

sorted(myArray, key=lambda x: -len(x))

FOLLOW UP: if you have a numpy array, as follows:

myArray = np.array([np.array(x) for x in [[1, 2, 3, 4, 5, 6, 7], [8, 9, 10, 11], [12], [13], [14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]]])

You can obtain a similar result:

np.array([y for x,y in sorted([(-len(x), x) for x in myArray])])

OUTPUT:

array([array([14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]),
   array([1, 2, 3, 4, 5, 6, 7]), array([ 8,  9, 10, 11]), array([12]),
   array([13])], dtype=object)