def find_smallest_diff_pair(numbers):
"""
Does exactly what the whole program does, on subroutine level
"""
# Can only find pairs in lists with more than one element
if len(numbers) < 2:
return None
# Sort input list
numbers = bsort(numbers)
# To many exercises to use and analyse a more efficient algorithm
# Walk through adjacent numbers and determine least difference with flood
# peak algorithm
# Initialize flood peak with first pair
least_difference_yet = numbers[1] - numbers[0]
least_tuple_yet = (numbers[0], numbers[1])
for i in range(0, len(numbers) - 1):
cur_difference = numbers[i+1] - numbers[i]
# Update least pair and difference yet if smaller pair found
if 0 != cur_difference < least_difference_yet:
least_tuple_yet = (numbers[i], numbers[i+1])
least_difference_yet = cur_difference
return least_tuple_yet
def profile(lists):
for alist in lists:
length = len(alist)
start = time.time()
something = sorting.bsort(alist)
finish = time.time()
btime = finish - start
start = time.time()
something = sorting.ssort(alist)
finish = time.time()
stime = finish - start
start = time.time()
something = sorting.msort(alist)
finish = time.time()
mtime = finish - start
print("""The time taken to sort a list of length {0} is
{1} using the bubble sort algorithm,
{2} using the Selection sort algorithm,
and {3} using the merge sort algorithm""".format(length, btime, stime, mtime))
for i in range (size):
answer.append(size - i)
return (answer)
list100 - makelist(100)
list200 = makelist(200)
list400 = makelist(400)
list800 = makelist(800)
list1600 = makelist(1600)
lists = [list100, list200, list400, list800, list1600]
for alist in lists:
length = len(alist)
start = time.time()
anything = sorting.bsort(alist)
finish = time.time()
btime = finish - start
start = time.time()
anything = sorting.ssort(alist)
finish = time.time()
stime = finish - start
start = time.time()
anything = sorting.msort(alist)
finish = time.time()
mtime = finish - start
print ('''The list of length {0} took:
{1} seconds to sort using a bubble sort,
def test2(self):
'''Test 2 checks that the bubble sort can sort a list of 4 items reversed.
'''
inlist = [4,3,2,1]
outlist = [1,2,3,4]
assert (sorting.bsort(inlist)==outlist) #test 2 fails - list not sorted by bubble sort
