def sum(list_a, list_b):
"""Calculates the sum of LinkedList data.
calculates the sum of linked list data in a reverse
manner. The data is then added in a reverse manner
into a new LinkedList.
Args:
list_a: a linked list containing an operand
list_b: a linked list containing an operand
Returns:
a LinkedList containing the sum of the operand
args in a reverse ordering.
"""
sum_list = SinglyLinkedList()
temp = list()
total = 0
remainder = 0
for nodes in it.zip_longest(list_a, list_b):
total = remainder
if nodes[0] and nodes[1]:
total += nodes[0].value + nodes[1].value
elif nodes[0]:
total += nodes[0].value
elif nodes[1]:
total += nodes[1].value
temp.append(total % 10)
remainder = total // 10
[sum_list.insert(item) for item in reversed(temp)]
return sum_list
def follow_up(list_a, list_b):
"""Calculates the sum of LinkedList data.
calculates the sum of linked list data in a reverse
manner. The data is then added in a foward manner
into a new LinkedList.
Args:
list_a: a linked list containing an operand
list_b: a linked list containing an operand
Returns:
a LinkedList containing the sum of the operand
args in a foward ordering.
"""
sum_list = SinglyLinkedList()
total = 0
add_zeroes(list_a, list_b)
for nodes in it.zip_longest(list_a, list_b):
total = (total * 10) + nodes[0].value + nodes[1].value
[sum_list.insert(int(value)) for value in reversed(str(total))]
return sum_list
class Testpalindrome(unittest.TestCase):
def setUp(self):
self.a = SinglyLinkedList()
def test_stack_true_one(self):
self.a.insert('c')
self.a.insert('i')
self.a.insert('v')
self.a.insert('i')
self.a.insert('c')
self.assertTrue(palindrome.check_with_stack(self.a))
def test_stack_true_two(self):
self.a.insert('a')
self.a.insert('n')
self.a.insert('n')
self.a.insert('a')
self.assertTrue(palindrome.check_with_stack(self.a))
def test_stack_false_one(self):
self.a.insert('h')
self.a.insert('e')
self.a.insert('l')
self.a.insert('l')
self.a.insert('o')
self.assertFalse(palindrome.check_with_stack(self.a))
def test_stack_false_two(self):
self.a.insert('c')
self.a.insert('r')
self.a.insert('i')
self.a.insert('n')
self.a.insert('g')
self.a.insert('e')
self.assertFalse(palindrome.check_with_stack(self.a))
def test_recurs_true_one(self):
self.a.insert('c')
self.a.insert('i')
self.a.insert('v')
self.a.insert('i')
self.a.insert('c')
self.assertTrue(palindrome.check_with_recur(self.a))
def test_recurs_true_two(self):
self.a.insert('a')
self.a.insert('n')
self.a.insert('n')
self.a.insert('a')
self.assertTrue(palindrome.check_with_recur(self.a))
def test_recurs_false_one(self):
self.a.insert('h')
self.a.insert('e')
self.a.insert('l')
self.a.insert('l')
self.a.insert('o')
self.assertFalse(palindrome.check_with_recur(self.a))
#odd case
def test_recurs_false_two(self):
self.a.insert('d')
self.a.insert('e')
self.a.insert('i')
self.a.insert('r')
self.a.insert('t')
self.assertFalse(palindrome.check_with_recur(self.a))
#even case
def test_recurs_false_three(self):
self.a.insert('e')
self.a.insert('g')
self.a.insert('n')
self.a.insert('i')
self.a.insert('r')
self.a.insert('c')
self.assertFalse(palindrome.check_with_recur(self.a))
class TestFollowUpSumLists(unittest.TestCase):
def setUp(self):
self.a = SinglyLinkedList()
self.b = SinglyLinkedList()
def test_same_length(self):
self.a.insert(1)
self.a.insert(2)
self.a.insert(3)
self.b.insert(3)
self.b.insert(2)
self.b.insert(1)
self.a = sumlists.follow_up(self.a, self.b)
self.c = [4, 4, 4]
self.d = list()
for node in self.a:
self.d.append(node.value)
self.assertListEqual(self.c, self.d)
def test_remainders(self):
self.a.insert(7)
self.a.insert(1)
self.a.insert(6)
self.b.insert(5)
self.b.insert(9)
self.b.insert(2)
self.a = sumlists.follow_up(self.a, self.b)
self.c = [9, 1, 2]
self.d = list()
for node in self.a:
self.d.append(node.value)
self.assertListEqual(self.c, self.d)
def test_diff_length(self):
self.a.insert(3)
self.a.insert(2)
self.a.insert(1)
self.b.insert(1)
self.b.insert(2)
self.b.insert(3)
self.b.insert(1)
self.a = sumlists.follow_up(self.a, self.b)
self.c = [1, 4, 4, 4]
self.d = list()
for node in self.a:
self.d.append(node.value)
self.assertListEqual(self.c, self.d)
class TestRmSortDups(unittest.TestCase):
def setUp(self):
self.a = SinglyLinkedList()
def test_table_one_dup(self):
self.a.insert(3)
self.a.insert(2)
self.a.insert(6)
self.a.insert(2)
self.a.insert(1)
rmdups.remove_with_sort(self.a)
self.a.delete(2)
self.assertEqual(self.a.search(2), None)
def test_table_multi_dup(self):
self.a.insert(3)
self.a.insert(2)
self.a.insert(6)
self.a.insert(2)
self.a.insert(1)
self.a.insert(1)
rmdups.remove_with_table(self.a)
self.a.delete(2)
self.a.delete(1)
self.assertEqual(self.a.search(2), None)
self.assertEqual(self.a.search(1), None)
def test_table_edge_dup(self):
self.a.insert(1)
self.a.insert(2)
self.a.insert(6)
self.a.insert(2)
self.a.insert(1)
self.a.insert(1)
rmdups.remove_with_table(self.a)
self.a.delete(2)
self.a.delete(1)
self.assertEqual(self.a.search(2), None)
self.assertEqual(self.a.search(1), None)
class TestIntersection(unittest.TestCase):
def setUp(self):
self.a = SinglyLinkedList()
self.b = SinglyLinkedList()
def test_same_len(self):
c = Node(96)
self.a.insert(1)
self.a.insert_node(c)
self.a.insert(2)
self.b.insert(1)
self.b.insert_node(c)
self.b.insert(2)
self.assertEqual(intersection.intersect(self.a, self.b), c)
def test_diff_len_one(self):
c = Node(96)
self.a.insert_node(c)
self.a.insert(3)
self.b.insert_node(c)
self.b.insert(5)
self.b.insert(6)
self.b.insert(7)
self.b.insert(8)
self.assertEqual(intersection.intersect(self.a, self.b), c)
def test_diff_len_two(self):
a = Node(23)
b = Node(45)
c = Node(96)
self.a.insert_node(a)
self.a.insert_node(b)
self.a.insert_node(c)
self.a.insert(3)
self.b.insert_node(a)
self.b.insert_node(b)
self.b.insert_node(c)
self.b.insert(5)
self.b.insert(6)
self.b.insert(7)
self.b.insert(8)
self.assertEqual(intersection.intersect(self.a, self.b), c)
class TestSinglyLinkedList(unittest.TestCase):
def setUp(self):
self.a = SinglyLinkedList()
def test_len_empty(self):
self.assertEqual(len(self.a), 0)
def test_len_one(self):
self.a.insert(3)
self.a.insert(2)
self.assertEqual(len(self.a), 2)
def test_len_two(self):
self.a.insert(3)
self.a.insert(2)
self.a.insert(2)
self.a.insert(2)
self.a.insert(2)
self.a.insert(2)
self.assertEqual(len(self.a), 6)
def test_insert_zero(self):
self.a.insert(0)
self.assertEqual(self.a.head.value, 0)
def test_insert_one(self):
self.a.insert(1)
self.a.insert(2)
self.a.insert(4)
self.assertEqual(self.a.head.value, 4)
def test_search_one(self):
self.a.insert(44)
found_node = self.a.search(44)
self.assertIsInstance(found_node, Node)
self.assertEqual(found_node.value, 44)
def test_search_two(self):
self.a.insert(44)
self.a.insert(66)
self.a.insert(67)
self.a.insert(34)
self.a.insert(78)
found_node = self.a.search(78)
self.assertIsInstance(found_node, Node)
self.assertEqual(found_node.value, 78)
def test_search_no_exist(self):
self.a.insert(44)
self.a.insert(66)
self.a.insert(67)
self.a.insert(34)
self.a.insert(78)
self.assertEqual(self.a.search(100), None)
def test_delete_zero(self):
self.a.insert(44)
self.a.delete(44)
self.assertEqual(self.a.search(66), None)
def test_delete_one(self):
self.a.insert(44)
self.a.insert(66)
self.a.insert(67)
self.a.delete(66)
self.assertEqual(self.a.search(66), None)
def test_delete_two(self):
self.a.insert(44)
self.a.insert(66)
self.a.insert(67)
self.a.delete(67)
self.assertEqual(self.a.search(67), None)