Source code for kyu_4.permutations.permutations

#  Created by Egor Kostan.
#  GitHub: https://github.com/ikostan
#  LinkedIn: https://www.linkedin.com/in/egor-kostan/


def permutations(string: str) -> list:
    """
    creates all permutations of an input string and
    remove duplicates, if present. This means, you
    have to shuffle all letters from the input in all
    possible orders.
    """