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36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
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from __future__ import print_function
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def cocktail_shaker_sort(unsorted):
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"""
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Pure implementation of the cocktail shaker sort algorithm in Python.
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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 sys
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# For python 2.x and 3.x compatibility: 3.x has no raw_input builtin
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# otherwise 2.x's input builtin function is too "smart"
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if sys.version_info.major < 3:
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input_function = raw_input
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else:
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input_function = input
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user_input = input_function('Enter numbers separated by a comma:\n')
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unsorted = [int(item) for item in user_input.split(',')]
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cocktail_shaker_sort(unsorted)
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print(unsorted)
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