def __init__(self, serial_num, host=None, port=None):
log("%s.%s serial_num=%s host=%s port=%s", self.__class__,
self.__init__.__name__, serial_num, host, port)
self.serial_num = serial_num
if host:
self.host = host
else:
self.host = _adb_get_ip(self.serial_num)
if port:
self.port = port
else:
self.port = self.PORT_DEFAULT
self._btp_socket = None
self._btp_worker = None
# self.log_filename = "iut-mynewt-{}.log".format(id)
# self.log_file = open(self.log_filename, "w")
self._stack = Stack()
self._stack.set_pairing_consent_cb(
lambda addr: _adb_tap_ok(self.serial_num))
self._stack.set_passkey_confirm_cb(
lambda addr, match: _adb_tap_ok(self.serial_num))
self._event_handler = BTPEventHandler(self)
def buildParseTree(fpexp):
fplist = fpexp.split()
pStack = Stack()
eTree = BinaryTree('')
pStack.push(eTree)
currentTree = eTree
for i in fplist:
if i == '(':
currentTree.insertLeft('')
pStack.push(currentTree)
currentTree = currentTree.getLeftChild()
elif i not in ['+', '-', '*', '/', ')']:
currentTree.setRootVal(int(i))
parent = pStack.pop()
currentTree = parent
elif i in ['+', '-', '*', '/']:
currentTree.setRootVal(i)
currentTree.insertRight('')
pStack.push(currentTree)
currentTree = currentTree.getRightChild()
elif i == ')':
currentTree = pStack.pop()
else:
raise ValueError
return eTree
def parens(string):
"""Return an integer representing whether all open parentheses are closed
in order in the provided input.
Args:
string (unicode): The string to search through for parens.
Returns:
int: Value represents whether parens are matched:
1: There are open parens that are not closed.
0: There are an equal number of matched open and close parens.
-1: There is a closed paren before a matching open paren.
"""
stack = Stack([-1, 0])
# ensure input is proper type before iterating
for c in unicode(string):
if c == '(':
stack.push(1)
elif c == ')':
if stack.pop() == 0:
# this is a 'broken' string
break
return stack.pop()
def large_stack():
s = Stack()
for num in range(1000):
s.push(num)
return s
def test_push_five_elements_and_iterate_stack(self):
stack = Stack()
langs = ['python', 'java', 'ruby', 'php', 'go']
for lang in langs:
stack.push(lang)
self.assertEqual(len(langs), stack.size())
for index, element in enumerate(stack):
self.assertEqual(element, langs[len(langs) - index - 1])
def main():
discs_count = 4
tower1: Stack[int] = Stack()
tower2: Stack[int] = Stack()
tower3: Stack[int] = Stack()
for i in range(discs_count, 0, -1):
tower1.push(i)
print(tower1, tower2, tower3)
solve(tower1, tower3, tower2, discs_count)
print(tower1, tower2, tower3)
def fibonacci_iterative_stack(n):
if n == 0:
return 1
st = Stack(max_size=300)
a, b = 1, 1
for _ in range(n):
st.push(a)
st.push(b)
a, b = b, a + b
return st.pop()
class Queue_with_stacks:
def __init__(self, iterable=[]):
self.stack_back = Stack(iterable)
self.stack_front = Stack()
# import pdb; pdb.set_trace()
def __topval__(self):
if self.stack_back.top.val is None:
print('Queue is empty')
else:
print('Next in queue is {}'.format(self.stack_back.top.val))
def enqueue(self, val):
self.stack_back.push(val)
print('{} added to end of Queue'.format(self.stack_back.top.val))
def dequeue(self):
if self.stack_back.top is None:
raise IndexError("queue is empty")
x = None
while self.stack_back.top._next:
x = self.stack_back.pop()
self.stack_front.push(x)
# print('{} added to end of front Queue'.format(self.stack_front.top.val))
y = self.stack_back.pop()
while self.stack_front.top:
x = self.stack_front.pop()
self.stack_back.push(x)
# print('{} added to end of back Queue'.format(self.stack_back.top.val))
print('{} was removed from front of Queue'.format(y))
return y
def stack_span(prices):
st = Stack()
nelements = len(prices)
span = [0] * nelements
for i in range(nelements):
while not (st.is_empty()) and prices[st.top()] <= prices[i]:
_ = st.pop()
span[i] = i + 1 if st.is_empty() else i - st.top()
st.push(i)
return span
def dft_print(self, node):
stack = Stack()
stack.push(node)
while stack.__len__() > 0:
top_item = stack.pop()
print(top_item.value)
if top_item.right is not None:
stack.push(top_item.right)
if top_item.left is not None:
stack.push(top_item.left)
def small_stack():
s = Stack()
s.push(1)
s.push(2)
s.push(3)
s.push(4)
s.push(5)
return s
def size(self):
if self.root is None:
return 0
stack = Stack()
stack.push(self.root)
size = 1
while not stack.is_empty():
node = stack.pop()
if node.left:
size += 1
stack.push(node.left)
if node.right:
size += 1
stack.push(node.right)
return size
def dfs_stack(root, fn):
stack = Stack()
stack.push(root)
visited = defaultdict(bool)
visited[root] = True
fn(root)
while not stack.is_empty():
node = stack.get_top()
for child in node.get_children():
if not visited.get(child):
fn(child)
visited[child] = True
stack.push(child)
else:
stack.pop()
def __init__(self):
self.procedure_directory = {} # [name] = {type, var_table}
self.curr_dimension_counter = 0 # last defined array dimension counter
self.curr_scope = "" # The current scope inside the program
self.curr_slice = None
self.curr_r = 1
self.curr_type = "" # The current type used (module or var)
self.curr_module_param_counter = 0
self.curr_module_var_counter = 0
self.queue_params = []
self.queue_params_addresses = []
self.stack_calls = Stack()
self.stack_calls.push(999)
self.stack_param_pointers = Stack()
self.stack_param_pointers.push(0)
self.is_value_slice_enabled = True
def __init__(self, host, port):
log("%s.%s host=%s port=%s", self.__class__, self.__init__.__name__,
host, port)
self.host = host
self.port = port
self._btp_socket = None
self._btp_worker = None
# self.log_filename = "iut-mynewt-{}.log".format(id)
# self.log_file = open(self.log_filename, "w")
self._stack = Stack()
self._stack.set_pairing_consent_cb(_pairing_consent)
self._stack.set_passkey_confirm_cb(_passkey_confirm)
self._event_handler = BTPEventHandler(self)
def test_stack(self):
e1 = Element(1)
e2 = Element(2)
e3 = Element(3)
e4 = Element(4)
stack = Stack(e1)
stack.push(e2)
stack.push(e3)
assert stack.pop().value == 3
assert stack.pop().value == 2
assert stack.pop().value == 1
assert stack.pop() == None
stack.push(e4)
assert stack.pop().value == 4
def dft_print(self, node):
s = Stack()
s.push(node)
x_arr = []
while s.size > 0:
current_node = s.pop()
print(current_node.value)
x_arr.append(current_node.value)
if current_node.left:
s.push(current_node.left)
if current_node.right:
s.push(current_node.right)
def dft_print(self, node):
stack = Stack()
# .push will add new elements
stack.push(node)
while len(stack) > 0:
# pop is used to return nth element of list
node = stack.pop()
if node.left is not None:
stack.push(node.left)
if node.right is not None:
stack.push(node.right)
print(node.value)
class ParenthesisMatching(object):
def __init__(self, parenthesis):
self.parenthesis = parenthesis
self.stack = Stack()
def is_match(self):
maps = {")": "(", "]": "[", "}": "{"}
for p in self.parenthesis:
if p in "([{":
self.stack.push(p)
elif p in ")]}":
if self.stack.is_empty():
return False
else:
top = self.stack.pop()
if maps[p] != top:
return False
return True
def test_pop_from_non_empty_stack_(self):
stack = Stack()
stack.push(1)
stack.push(5)
stack.push(14)
stack.push(31)
self.assertEqual(stack.pop(), 31)
self.assertEqual(stack.items.walk(), [1, 5, 14])
class BitConversion(object):
def __init__(self, dec):
self.dec = dec
self.stack = Stack()
self.base = "0123456789abcdef"
def conversion(self, bit):
if bit not in (2, 8, 16):
raise ValueError("bit must in (2, 8, 16)")
while self.dec > 0:
remainder = self.dec % bit
self.stack.push(self.base[remainder])
self.dec = self.dec // bit
result = []
while not self.stack.is_empty():
result.append(self.stack.pop())
return "".join(result)
def is_balanced_symbols(string: str):
stack = Stack()
for char in string:
if char in "([{":
stack.push(char)
elif char in "}])":
if stack.isempty():
return False
elif match(stack.peek(), char):
stack.pop()
else:
return False
if stack.isempty():
return True
else:
return False
def dfs_in_order_stack(self):
result = []
stack = Stack()
stack.push(self)
while stack.peek():
current_node = stack.pop()
result.append(current_node.value)
for node in current_node.nodes:
stack.push(node)
return result
def test_push_five_elements_to_stack_and_pop_all_elements(self):
stack = Stack()
langs = ['python', 'java', 'ruby', 'php', 'go']
for lang in langs:
stack.push(lang)
self.assertEqual(len(langs), stack.size())
for i in range(len(langs)):
element = stack.pop()
self.assertEqual(element, langs[len(langs) - i - 1])
self.assertTrue(stack.is_empty())
def test_push_to_non_empty_stack(self):
stack = Stack()
stack.push(2)
self.assertIsNotNone(stack.items.head)
stack.push(4)
self.assertNotEqual(stack.items.head.value, 4)
self.assertEqual(stack.items.tail.value, 4)
def setUp(self):
self.data = ["d1", "d2"]
self.s1 = Stack()
self.s2 = Stack(StackNode(self.data[0]))
self.s3 = Stack()
for datum in self.data:
self.s3.push(datum)
def test_push_five_elements_to_stack_and_pop_two_elements(self):
stack = Stack()
langs = ['python', 'java', 'ruby', 'php', 'go']
for lang in langs:
stack.push(lang)
self.assertEqual(len(langs), stack.size())
element1 = stack.pop()
element2 = stack.pop()
self.assertEqual('go', element1)
self.assertEqual('php', element2)
self.assertEqual(3, stack.size())
def is_balanced_parentheses(string: str):
stack = Stack()
for char in string:
if char == "(":
stack.push("(")
elif char == ")":
if stack.isempty():
return False
else:
stack.pop()
if stack.isempty():
return True
else:
return False
def dft_print(self, node): # in order, just with an iterative solution
s = Stack()
while node is not None:
if node.left:
s.push(node.left)
print(node.value)
if node.right:
s.push(node.right)
if len(s) > 0:
node = s.pop()
else:
break
return
def __init__(self, board: Board):
log("%s.%s board=%r", self.__class__, self.__init__.__name__, board)
self.board = board
self.id = self.board.id
self.btp_address = BTP_ADDRESS + '-' + str(self.id)
self._socat_process = None
self._btp_socket = None
self._btp_worker = None
self.log_filename = "iut-mynewt-{}.log".format(self.id)
self.log_file = open(self.log_filename, "w")
self._stack = Stack()
self._event_handler = BTPEventHandler(self)
def reverse_string(input_string):
s = Stack()
for i in input_string:
s.push(i)
rev_string = ''
while not s.is_empty():
rev_string = rev_string + (s.pop())
return rev_string
def pre_order_not_recursion(self):
pre_order_list = []
node = self
s = Stack()
while node or not s.is_empty():
while node:
pre_order_list.append(node)
s.push(node)
node = node.left
if not s.is_empty():
node = (s.pop()).right
return pre_order_list
def in_order_not_recursion(self):
in_order_list = []
node = self
s = Stack()
while node or not s.is_empty():
while node:
s.push(node)
node = node.left
if not s.is_empty():
node = s.pop()
in_order_list.append(node)
node = node.right
return in_order_list
def pre_order_traverse(root):
""" please refer to http://learn.hackerearth.com/tutorial/trees/19/iterative-tree-traversals/
"""
stack = Stack()
p = root
while True:
while p is not None:
# print node and store the node in the stack
print p,
stack.push(p)
p = p.lchild
# visit the right child
if not stack.is_empty():
p = stack.pop()
p = p.rchild
if stack.is_empty() and p is None:
break
print
def in_order_traverse(root):
""" please refer to http://learn.hackerearth.com/tutorial/trees/19/iterative-tree-traversals/
"""
stack = Stack()
p = root
while True:
while p is not None:
# store a node in the stack and visit its left child
stack.push(p)
p = p.lchild
# if there are nodes in the stack to which we can move up, then pop it
if not stack.is_empty():
p = stack.pop()
print p,
# visit the right child
p = p.rchild
if stack.is_empty() and p is None:
break
print
def post_order_recursion(self):
post_order_list = []
node = self
pre_node = None
current_node = None
s = Stack()
s.push(node)
while not s.is_empty():
current_node = s.top()
if (not current_node.left and not current_node.right) or \
(pre_node and ((current_node.left and pre_node.key == current_node.left.key)
or (current_node.right and pre_node.key == current_node.right.key))):
post_order_list.append(current_node)
s.pop()
pre_node = current_node
else:
if current_node.right:
s.push(current_node.right)
if current_node.left:
s.push(current_node.left)
return post_order_list
from stack.stack import Stack from stack.stack import foo stk = Stack() stk.push(1) stk.push(2) stk.pop() stk.push(3) print stk.peek() print stk.size() print foo()
def setUp(self):
self.stack = Stack()
class StackTests(unittest.TestCase):
def setUp(self):
self.stack = Stack()
def tearDown(self):
self.stack = None
def test_push(self):
self.stack.push(10)
self.assertEqual(self.stack.peek(), 10)
self.stack.push(100)
self.assertEqual(self.stack.peek(), 100)
def test_pop(self):
self.stack.push(1)
self.stack.push(2)
self.stack.push(3)
self.stack.push(4)
self.assertEquals(self.stack.pop(), 4)
self.assertEquals(self.stack.pop(), 3)
self.assertEquals(self.stack.pop(), 2)
self.assertEquals(self.stack.pop(), 1)
with self.assertRaises(IndexError):
self.stack.pop()
def test_peek(self):
self.stack.push(1)
self.stack.push(2)
self.stack.push(3)
self.stack.push(4)
self.assertEquals(self.stack.peek(), 4)
self.stack.pop()
self.assertEquals(self.stack.peek(), 3)
self.stack.pop()
self.assertEquals(self.stack.peek(), 2)
self.stack.pop()
self.assertEquals(self.stack.peek(), 1)
self.stack.pop()
with self.assertRaises(IndexError):
self.stack.peek()
def test_reverse(self):
self.stack.push(1)
self.stack.push(2)
self.stack.push(3)
self.stack.push(4)
self.stack.push(5)
self.stack.reverse()
self.assertEqual(self.stack.pop(), 1)
self.assertEqual(self.stack.pop(), 2)
self.assertEqual(self.stack.pop(), 3)
self.assertEqual(self.stack.pop(), 4)
self.assertEqual(self.stack.pop(), 5)