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# Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "Sorting algorithms" project.
# For details, see https://github.com/egor-tensin/sorting-algorithms.
# Distributed under the MIT License.
import sys
from ..algorithm import SortingAlgorithm
def bubble_sort(xs):
while True:
swapped = False
for i in range(1, len(xs)):
if xs[i - 1] > xs[i]:
xs[i], xs[i - 1] = xs[i - 1], xs[i]
swapped = True
if not swapped:
break
return xs
def bubble_sort_optimized(xs):
n = len(xs)
while True:
new_n = 0
for i in range(1, n):
if xs[i - 1] > xs[i]:
xs[i], xs[i - 1] = xs[i - 1], xs[i]
new_n = i
n = new_n
if not n:
break
return xs
_ALGORITHMS = [
SortingAlgorithm('bubble_sort', 'Bubble sort', bubble_sort),
SortingAlgorithm('bubble_sort_optimized', 'Bubble sort (optimized)', bubble_sort_optimized),
]
def _parse_args(args=None):
if args is None:
args = sys.argv[1:]
return list(map(int, args))
def main(args=None):
xs = _parse_args(args)
print(bubble_sort(list(xs)))
print(bubble_sort_optimized(list(xs)))
if __name__ == '__main__':
main()
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