def generate_and_swap(n: int):
'''Generates a list of size n and swaps two elements in the list, O(n)'''
my_list = random_number_insertion(n)
swap_random(my_list)
from insertion import random_number_insertion
def print_to_screen(element, a_list):
'''
Prints element and list to screen, O(n) time with n being the size of
the list. It goes through the list two times, but since constants are
removed the time is still O(n)
'''
print(element)
stringified_list = [str(i) for i in a_list] # Time complexity: O(n)
print(", ".join(stringified_list)) # Time complexity: O(n)
def display(a_list):
'''displays list info, O(n^2)'''
for element in a_list:
print_to_screen(element, a_list) # O(n)
display(random_number_insertion(5))
def swap(a_list, indices):
index1, index2 = indices
a_list[index1], a_list[index2] = a_list[index2], a_list[index1]
def switch_random(a_list: list):
'''Switches two random neighbor elements in a list, O(1)'''
index = random_index(a_list)
swap(a_list, (index, index - 1))
def swap_random(a_list: list):
'''Swaps two random elements in a list, O(1)'''
indices = random_index_tuple(a_list)
swap(a_list, indices)
def generate_and_swap(n: int):
'''Generates a list of size n and swaps two elements in the list, O(n)'''
my_list = random_number_insertion(n)
swap_random(my_list)
if __name__ == "__main__":
my_list = random_number_insertion(10)
print(my_list)
swap(my_list)
print(my_list)
'''Single insert using binary search, still in O(n) time because
of the insert.'''
index = binary_search(a_list, number)
insert(a_list, number, index)
def test_insert(insert_function, a_list):
'''Populates sorted list, complexity: O(n^2)'''
my_list = list()
for num in a_list:
insert_function(my_list, num)
return my_list
if __name__ == "__main__":
testlist = random_number_insertion(1000)
start_time = timeit.default_timer()
sorted_list_1 = test_insert(linear_insert, testlist)
print(timeit.default_timer() - start_time)
start_time = timeit.default_timer()
sorted_list_2 = test_insert(binary_insert, testlist)
print(timeit.default_timer() - start_time)
for i, item in enumerate(zip(sorted_list_1, sorted_list_2)):
if item[0] != item[1]:
print(i)
assert sorted_list_1 == sorted_list_2