CodeBlog Task #31

#!/usr/bin/env python3
def doImmutableFilter(min_v, max_v, arr):
    '''Input list doesn't changes'''
    filtered_arr = list(filter(lambda x: not (min_v <= x <= max_v), arr))
    return filtered_arr + [0] * (len(arr) - len(filtered_arr))


def doMutableFilter(min_v, max_v, arr):
    '''Input list will change'''
    i = len(arr) - 1
    while i >= 0:
        if min_v <= arr[i] <= max_v:
            del arr[i]
            arr.append(0)
        i -= 1
    return arr