Exploration of Factorials, Permutations, Shuffling, and Deques in Python

The function first defines a recursive function to calculate factorial, then defines a function to generate permutations of given items, a function to shuffle items randomly, and a function to find the number of the longest element in a deque. Finally, it returns the result of all these function calls.

Technology Stack : Babel, Collections, ITertools

Code Type : Python Function

Code Difficulty : Intermediate

                
                    
def random_module_usage():
    import random
    from collections import deque
    from itertools import permutations

    def factorial(n):
        if n == 0:
            return 1
        else:
            return n * factorial(n-1)

    def permute_items(items):
        return list(permutations(items))

    def shuffle_items(items):
        shuffled = list(items)
        random.shuffle(shuffled)
        return shuffled

    def find_longest_deque(dq):
        max_length = 0
        for item in dq:
            if len(item) > max_length:
                max_length = len(item)
        return max_length

    return find_longest_deque(deque(permute_items(shuffle_items(range(5)))))