def test_random(self):
failures = []
for i in range(0, self.random_runs):
len_list = random.randrange(self.min_len, self.max_len)
random_list = self.random_list_gen.get_list(len_list)
a1_out = enumeration(random_list)
a2_out = better_enumeration(random_list)
a3_out = divide_and_conquer(random_list)
# a3_out = a2_out
a4_out = dynamic_programming(random_list)
if a1_out != a2_out or a1_out != a3_out or a1_out != a4_out:
failures.append((random_list, a1_out, a2_out, a3_out, a4_out))
message_template = "%s\na1 %s\na2 %s\na3 %s\na4 %s\n\n"
message = "%d runs, %d failures\n\n" % (self.random_runs, len(failures))
for failure in failures:
(failed_list, failed_a1, failed_a2, failed_a3, failed_a4) = failure
message += message_template % (failed_list, failed_a1, failed_a2, failed_a3, failed_a4)
message += "%d runs, %d failures\n\n" % (self.random_runs, len(failures))
self.assertTrue(len(failures) == 0, message)
def test_algorithm3_providedInput_shouldReturnMatchProvidedOutput(self):
test_lists = load_lists_from_file('Problems/MSS_TestProblems-1.txt')
expected = [(3, 14, 34), (0, 5, 30), (6, 12, 50), (2, 7, 187), (0, 4, 7), (0, 3, 210), (3, 7, 6)]
actual = []
for test_list in test_lists:
actual.append(divide_and_conquer(test_list))
message = "For the instructor provided input, should return the max sum of the provided output \n%s, but was \n%s" % (expected, actual)
self.assertEqual(expected, actual, message)
out.write("Better Enumeration, ")
for i in range(0, len(a2_list_lengths)):
a2_random_lists = random_list_gen.get_lists(100, a2_list_lengths[i])
start = time.clock()
for random_list in a2_random_lists:
better_enumeration(random_list)
elapsed = time.clock() - start
out.write("%f, " % elapsed)
out.write_line('')
out.write("Divide and Conquer, ")
for i in range(0, len(a3_list_lengths)):
a3_random_lists = random_list_gen.get_lists(100, a3_list_lengths[i])
start = time.clock()
for random_list in a3_random_lists:
divide_and_conquer(random_list)
elapsed = time.clock() - start
out.write("%f, " % elapsed)
out.write_line('')
out.write("Dynamic Programming, ")
for i in range(0, len(a4_list_lengths)):
a4_random_lists = random_list_gen.get_lists(100, a4_list_lengths[i])
start = time.clock()
for random_list in a4_random_lists:
dynamic_programming(random_list)
elapsed = time.clock() - start
out.write("%f, " % elapsed)
out.write_line('')
out.close()
from algorithm2.algorithm2 import better_enumeration
from algorithm3.algorithm3 import divide_and_conquer
from algorithm4.algorithm4 import dynamic_programming
from file_loader.file_loader import load_lists_from_file
from file_writer.file_writer import FileWriter
lists = load_lists_from_file('Problems/MSS_Problems.txt')
out = FileWriter('Output/MSS_Results.txt')
for array_list in lists:
algorithm1_output = enumeration(array_list)
algorithm2_output = better_enumeration(array_list)
algorithm3_output = divide_and_conquer(array_list)
algorithm4_output = dynamic_programming(array_list)
out.write_line(array_list)
out.write_line('enumeration: ')
out.write_line(algorithm1_output)
out.write_line('better enumeration: ')
out.write_line(algorithm2_output)
out.write_line('divide and conquer: ')
out.write_line(algorithm3_output)
out.write_line('dynamic programming: ')
out.write_line(algorithm4_output)
out.write_line('\n')
out.close()
def test_algorithm3_len3_2_neg1_2_should_return_0_3_3(self):
test_list = [2, -1, 2]
expected = (0, 3, 3)
actual = divide_and_conquer(test_list)
message = "For array [2, -1, 2], the max subarray should be the sum of all three elements, but was %s" % str(actual)
self.assertEqual(expected, actual, message)
def test_algorithm3_len2_1_1_should_return_0_2_2(self):
test_list = [1, 1]
expected = (0, 2, 2)
actual = divide_and_conquer(test_list)
message = "For array [1, 1], the max subarray should be the sum of both elements, but was %s" % str(actual)
self.assertEqual(expected, actual, message)
def test_algorithm3_len1_2_should_return_0_1_2(self):
test_list = [2]
expected = (0, 1, 2)
actual = divide_and_conquer(test_list)
message = "For a single element array with value 2, the max subarray should be the first element"
self.assertEqual(expected, actual, message)
