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Stupid Sort - sorting algorinthm with O(n!!)
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import random | |
# Precondition: list is a list of numbers | |
def is_ordered(list): | |
last = None | |
for el in list: | |
if last is not None and el < last: | |
return False | |
last = el | |
return True | |
# Precondition: list is a list of numbers, index1 and index2 are integers between 0 and len(list) | |
def swap_elements(list, index1, index2): | |
list[index1], list[index2] = list[index2], list[index1] | |
return list | |
# Precondition: list is a list of numbers | |
def stupid_sort(list): | |
max = len(list) | |
count = 0 | |
while not is_ordered(list): | |
list = swap_elements(list, random.randrange(max), random.randrange(max)) | |
count += 1 | |
print("Total number of iterations:", count) | |
return list | |
# Generate a list of 100 random integers between 0 and 1024 | |
input_list = random.sample(range(0, 1024), 10) | |
print("Input list:", input_list) | |
sorted_list = stupid_sort(input_list) | |
print("Sorted list:", sorted_list) |
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