List with Mixed Data

practice_9122022.py

def solution_algo(input_list):
    # if the list has 0 or 1 element, nothing to do
    if len(input_list) <= 1:
        return input_list
    else:
        # using a new list to insert elements from input list
        w = []
        # first getting all the not-NULL elements into the list
        for e in input_list:
            if e != None:
                w.append(e)
        # next getting the NULLs to the back of the list
        for e in input_list:
            if e == None:
                w.append(e)
        # replacing the input_list with the new list
        input_list = w
        # returning the list with elements and NULLs
        return input_list