def test_searching(self):
l = UnorderedList()
for i in range(4):
l.add(i)
for i in range(4):
self.assertTrue(l.search(i))
for item in (5, None, True, "blah"):
self.assertFalse(l.search(item))
def test_adding(self):
l = UnorderedList()
self.assertEqual(l.size(), 0)
self.assertTrue(l.is_empty())
l.add(1)
self.assertEqual(l.size(), 1)
self.assertEqual(l.head.value, 1)
self.assertFalse(l.is_empty())
l.add(2)
self.assertEqual(l.size(), 2)
self.assertEqual(l.head.value, 2)
def test_remove(self):
l = UnorderedList()
for i in range(3):
l.add(i)
# remove from middle
l.remove(1)
self.assertFalse(l.search(1))
self.assertEqual(l.size(), 2)
# remove from end
l.remove(2)
self.assertFalse(l.search(2))
self.assertEqual(l.size(), 1)
# remove from start
l.remove(0)
self.assertFalse(l.search(0))
self.assertEqual(l.size(), 0)
from unordered_list import UnorderedList mylist = UnorderedList() mylist.add(20) mylist.add(40) mylist.insert(1, 55) mylist.insert(-2, 65) print(mylist.index(65)) mylist.append(100) print(mylist.index(100))
from unordered_list import UnorderedList
def remove_dups(linked_list):
start = linked_list.head
previous = None
while start:
my_next = start.get_next()
previous = start
while my_next:
if start.get_data() == my_next.get_data():
previous.set_next(my_next.get_next())
previous = my_next
my_next = my_next.get_next() #advance to next node
start = start.get_next()
my_list = UnorderedList()
stuff = [4, 2, 44, 23, 2, 3, 4, 9]
for i in stuff:
my_list.add_item(i)
print(my_list)
remove_dups(my_list)
print(my_list)
def setUp(self):
self.l = UnorderedList()
class TestUnorderedList(unittest.TestCase):
def setUp(self):
self.l = UnorderedList()
def test_all(self):
self.assertTrue(self.l.isEmpty())
# 54 26 93 17 77 31
self.l.add(31)
self.l.add(77)
self.l.add(17)
self.l.add(93)
self.l.add(26)
self.l.add(54)
self.assertFalse(self.l.isEmpty())
self.assertEqual(6, self.l.size())
self.assertTrue(self.l.search(93))
self.assertEqual(2, self.l.index(93))
self.assertFalse(self.l.search(100))
self.assertIsNone(self.l.index(100))
# 100 54 26 93 17 77 31
self.l.add(100)
self.assertTrue(self.l.search(100))
self.assertEqual(0, self.l.index(100))
self.assertEqual(7, self.l.size())
# 100 26 93 17 77 31
self.assertEqual(2, self.l.index(26))
self.l.remove(54)
self.assertEqual(6, self.l.size())
self.assertEqual(1, self.l.index(26))
# 100 26 17 77 31
self.assertEqual(3, self.l.index(17))
self.l.remove(93)
self.assertEqual(5, self.l.size())
self.assertEqual(2, self.l.index(17))
# 100 26 17 77
self.assertEqual(3, self.l.index(77))
self.l.remove(31)
self.assertEqual(4, self.l.size())
self.assertEqual(3, self.l.index(77))
self.assertFalse(self.l.search(93))
def test_appendInsertPop(self):
# 31 93 77 17
self.l.append(77)
self.l.insert(31, 0)
self.l.append(17)
self.l.insert(93, 1)
self.assertEqual(4, self.l.size())
self.assertEqual(0, self.l.index(31))
self.assertEqual(1, self.l.index(93))
self.assertEqual(2, self.l.index(77))
self.assertEqual(3, self.l.index(17))
# 31 93 77
self.l.pop()
self.assertEqual(0, self.l.index(31))
self.assertEqual(1, self.l.index(93))
self.assertEqual(2, self.l.index(77))
# 31 77
self.l.pop(1)
self.assertEqual(0, self.l.index(31))
self.assertEqual(1, self.l.index(77))
def test_dupitem(self):
self.l.append(3)
self.l.append(3)
self.l.append(2)
self.l.append(3)
self.assertEqual(4, self.l.size())
self.l.remove(3)
self.assertTrue(self.l.search(3))
self.assertEqual(0, self.l.index(3))
self.assertEqual('[3, 2, 3]', self.l.__str__())
def test_slice(self):
self.assertEqual([], self.l.slice(0, 5))
# 1 2 3 4 5
self.l.append(1)
self.l.append(2)
self.l.append(3)
self.l.append(4)
self.l.append(5)
self.assertEqual([1, 2], self.l.slice(0, 2))
self.assertEqual([3, 4, 5], self.l.slice(2, 5))