TheAlgorithms-Python

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"""
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Gnome Sort Algorithm (A.K.A. Stupid Sort)
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This algorithm iterates over a list comparing an element with the previous one.
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If order is not respected, it swaps element backward until order is respected with
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previous element.  It resumes the initial iteration from element new position.
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For doctests run following command:
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python3 -m doctest -v gnome_sort.py
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For manual testing run:
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python3 gnome_sort.py
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"""
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def gnome_sort(lst: list) -> list:
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    """
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    Pure implementation of the gnome sort algorithm in Python
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    Take some mutable ordered collection with heterogeneous comparable items inside as
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    arguments, return the same collection ordered by ascending.
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    Examples:
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    >>> gnome_sort([0, 5, 3, 2, 2])
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    [0, 2, 2, 3, 5]
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    >>> gnome_sort([])
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    []
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    >>> gnome_sort([-2, -5, -45])
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    [-45, -5, -2]
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    >>> "".join(gnome_sort(list(set("Gnomes are stupid!"))))
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    ' !Gadeimnoprstu'
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    """
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    if len(lst) <= 1:
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        return lst
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    i = 1
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    while i < len(lst):
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        if lst[i - 1] <= lst[i]:
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            i += 1
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        else:
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            lst[i - 1], lst[i] = lst[i], lst[i - 1]
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            i -= 1
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            if i == 0:
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                i = 1
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    return lst
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if __name__ == "__main__":
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    user_input = input("Enter numbers separated by a comma:\n").strip()
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    unsorted = [int(item) for item in user_input.split(",")]
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    print(gnome_sort(unsorted))
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