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b080a5e027
* Doctests in cocktail shaker sort
* import doctest
* print(f"{cocktail_shaker_sort(unsorted) = }")
Co-authored-by: John Law <johnlaw.po@gmail.com>
Co-authored-by: Christian Clauss <cclauss@me.com>
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
""" https://en.wikipedia.org/wiki/Cocktail_shaker_sort """
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def cocktail_shaker_sort(unsorted: list) -> list:
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"""
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Pure implementation of the cocktail shaker sort algorithm in Python.
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>>> cocktail_shaker_sort([4, 5, 2, 1, 2])
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[1, 2, 2, 4, 5]
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>>> cocktail_shaker_sort([-4, 5, 0, 1, 2, 11])
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[-4, 0, 1, 2, 5, 11]
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>>> cocktail_shaker_sort([0.1, -2.4, 4.4, 2.2])
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[-2.4, 0.1, 2.2, 4.4]
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>>> cocktail_shaker_sort([1, 2, 3, 4, 5])
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[1, 2, 3, 4, 5]
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>>> cocktail_shaker_sort([-4, -5, -24, -7, -11])
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[-24, -11, -7, -5, -4]
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"""
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for i in range(len(unsorted) - 1, 0, -1):
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swapped = False
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for j in range(i, 0, -1):
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if unsorted[j] < unsorted[j - 1]:
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unsorted[j], unsorted[j - 1] = unsorted[j - 1], unsorted[j]
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swapped = True
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for j in range(i):
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if unsorted[j] > unsorted[j + 1]:
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unsorted[j], unsorted[j + 1] = unsorted[j + 1], unsorted[j]
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swapped = True
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if not swapped:
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return unsorted
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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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(f"{cocktail_shaker_sort(unsorted) = }")
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