def select(source, start, end, k):
if (end - start) <= 140:
sort.normal_quick_sort(source, start, end)
return [source[k - 1], k - 1]
length = end - start
for i in xrange(length / 5):
sort.insert_sort(source, start + i * 5, start + i * 5 + 5)
temp = source[start + i]
source[start + i] = source[start + 5 * i + 2]
source[start + 5 * i + 2] = temp
[i, index] = select(source, start, start + length / 5, length / 10)
temp = source[index]
source[index] = source[end - 1]
source[end - 1] = temp
j = sort.partition(source, start, end)
if j == k:
return [source[j], j]
elif j > k:
return select(source, start, j, k)
else:
return select(source, j + 1, end, k)
def select(source, start, end, k):
if (end - start) <= 140:
sort.normal_quick_sort(source, start, end)
return [source[k - 1], k-1]
length = end - start
for i in xrange(length/5):
sort.insert_sort(source,start + i*5, start + i*5 + 5)
temp = source[start + i]
source[start + i] = source[start + 5*i + 2]
source[start + 5*i + 2] = temp
[i, index] = select(source, start, start + length/5, length/10)
temp = source[index]
source[index] = source[end - 1]
source[end - 1] = temp
j = sort.partition(source, start, end)
if j == k:
return [source[j], j]
elif j > k:
return select(source, start, j, k)
else:
return select(source, j + 1, end, k)
# ц╟ещеепР
random.shuffle(ls)
time_start = time.clock()
sort.bubble_sort(ls)
print ("ц╟ещеепРсцй╠: % s" %(time.clock() - time_start) )
# я║тЯеепР
random.shuffle(ls)
time_start = time.clock()
sort.select_sort(ls)
print ("я║тЯеепРсцй╠: % s" %(time.clock() - time_start) )
# ╡ЕхКеепР
random.shuffle(ls)
time_start = time.clock()
sort.insert_sort(ls)
print ("╡ЕхКеепРсцй╠: % s" %(time.clock() - time_start) )
# оё╤ШеепР
random.shuffle(ls)
time_start = time.clock()
sort.shell_sort(ls)
print ("оё╤ШеепРсцй╠: % s" %(time.clock() - time_start) )
# ╧И╡╒еепР
random.shuffle(ls)
time_start = time.clock()
sort.merge_sort(ls)
print ("╧И╡╒еепРсцй╠: % s" %(time.clock() - time_start) )
# ©ЛкыеепР
# ц╟ещеепР
random.shuffle(ls)
time_start = time.clock()
sort.bubble_sort(ls)
print("ц╟ещеепРсцй╠: % s" % (time.clock() - time_start))
# я║тЯеепР
random.shuffle(ls)
time_start = time.clock()
sort.select_sort(ls)
print("я║тЯеепРсцй╠: % s" % (time.clock() - time_start))
# ╡ЕхКеепР
random.shuffle(ls)
time_start = time.clock()
sort.insert_sort(ls)
print("╡ЕхКеепРсцй╠: % s" % (time.clock() - time_start))
# оё╤ШеепР
random.shuffle(ls)
time_start = time.clock()
sort.shell_sort(ls)
print("оё╤ШеепРсцй╠: % s" % (time.clock() - time_start))
# ╧И╡╒еепР
random.shuffle(ls)
time_start = time.clock()
sort.merge_sort(ls)
print("╧И╡╒еепРсцй╠: % s" % (time.clock() - time_start))
# ©ЛкыеепР
def test_insert_sort(array):
t0 = time.time()
sort.insert_sort(array)
t1 = time.time()
print "Elapsed time (insert sort): " + elapsed_to_str(t0, t1) + " sec."
list_large = []
for i in range(5000):
list_large.append(random.randint(1, 100))
print 'size:5000, for the slower ones'
timer = timer.Timer(time.clock()) #initialize the timer
print 'bubble sort\n'
list = sort.bubble_sort(list_large[:])
assert sort.check_sorted(list)
timer.get_time(time.clock())
print ''
print 'insertion sort\n'
list = sort.insert_sort(list_large[:])
assert sort.check_sorted(list)
timer.get_time(time.clock())
print ''
print 'insertion sort fast\n'
list = sort.insert_sort_fast(list_large[:])
assert sort.check_sorted(list)
timer.get_time(time.clock())
print ''
print 'heap sort\n'
list = sort.heap_sort(list_large[:])
assert sort.check_sorted(list)
timer.get_time(time.clock())
print ''
def test_sort_deterministic():
nums = [2, 1, 5, 3, 6, 2, 5]
ans = [1, 2, 2, 3, 5, 5, 6]
assert bubble_sort(nums) == ans
assert insert_sort(nums) == ans
def test_sort_stochastic():
for i in range(20):
nums = random.sample(range(10), 5)
sorted_ans = sorted(nums)
assert bubble_sort(nums) == sorted_ans
assert insert_sort(nums) == sorted_ans