def simple_tree():
t = BinaryTree()
t.insert(5)
t.insert(10)
t.insert(2)
t.insert(17)
return t
def balanced_tree():
t = BinaryTree()
t.insert(5)
t.insert(2)
t.insert(1)
t.insert(3)
t.insert(8)
t.insert(7)
t.insert(9)
return t
def simple_tree():
t = BinaryTree()
t.insert(5)
t.insert(10)
t.insert(2)
t.insert(17)
return t
def test_binary_search_tree():
# Create a complete binary search tree of 3, 7, or 15 items in level-order
# items = [2, 1, 3]
items = [4, 2, 6, 1, 3, 5, 7]
# items = [8, 4, 12, 2, 6, 10, 14, 1, 3, 5, 7, 9, 11, 13, 15]
print('items: {}'.format(items))
tree = BinarySearchTree()
print('tree: {}'.format(tree))
print('root: {}'.format(tree.root))
print('\nInserting items:')
for item in items:
tree.insert(item)
print('insert({}), size: {}'.format(item, tree.size))
print('root: {}'.format(tree.root))
print('\nSearching for items:')
for item in items:
result = tree.search(item)
print('search({}): {}'.format(item, result))
item = 123
result = tree.search(item)
print('search({}): {}'.format(item, result))
print('\nTraversing items:')
print('items in-order: {}'.format(tree.items_in_order()))
print('items pre-order: {}'.format(tree.items_pre_order()))
print('items post-order: {}'.format(tree.items_post_order()))
print('items level-order: {}'.format(tree.items_level_order()))
def balanced_tree():
t = BinaryTree()
t.insert(5)
t.insert(2)
t.insert(1)
t.insert(3)
t.insert(8)
t.insert(7)
t.insert(9)
return t
def unbalanced_tree():
t = BinaryTree()
t.insert(5)
t.insert(6)
t.insert(7)
t.insert(8)
t.insert(9)
t.insert(4)
return t
def unbalanced_tree():
t = BinaryTree()
t.insert(5)
t.insert(6)
t.insert(7)
t.insert(8)
t.insert(9)
t.insert(4)
return t
class TreeMap:
def __init__(self):
self.tree = BinaryTree()
self.size = 0
def __str__(self):
"""Return a formatted string representation of cursed tree map."""
items = ['{!r}: {!r}'.format(key, val) for key, val in self.items()]
return '{' + ', '.join(items) + '}'
def __repr__(self):
"""Return a string representation of this cursed tree map."""
return 'TreeMap({!r})'.format(self.items())
def items(self):
items = self.tree.items_in_order()
retlist = []
for item in items:
retlist.append((item.key, item.value))
return retlist
def keys(self):
items = self.tree.items_in_order()
for item in items:
yield item.key
def set(self, key, value):
self.tree.set_insert(KeyValuePackage(key, value))
def get(self, key):
return self.tree.search(key).value
def contains(self, key):
return self.tree.contains(key)
def delete(self, key):
self.tree.delete(key)
def complex_tree():
t = BinaryTree()
t.insert(100)
t.insert(80)
t.insert(60)
t.insert(40)
t.insert(20)
t.insert(50)
t.insert(70)
t.insert(90)
t.insert(85)
t.insert(95)
t.insert(120)
t.insert(140)
t.insert(160)
t.insert(180)
t.insert(110)
t.insert(175)
t.insert(170)
t.insert(176)
return t
def large_binary_tree():
bt = BinaryTree([20, 18, 12, 19, 11, 14, 40, 31, 22, 33])
return bt
def test_binary_tree_initializes():
assert BinaryTree([1, 2, 3])
if root is None: return []
stack, res = [(root, False)], []
while stack:
cur, visited = stack.pop()
if cur is None: continue
if visited:
res.append(cur.val)
else:
stack.append((cur, True))
stack.append((cur.right, False))
stack.append((cur.left, False))
return res
if __name__ == '__main__':
bst = BinaryTree(serialize=','.join(map(str, range(1, 1 << 5))))
pre = bst.pre_order()
assert pre == pre_order1(bst.root)
assert pre == pre_order2(bst.root)
assert pre == pre_order3(bst.root)
assert pre == pre_order4(bst.root)
in_ = bst.in_order()
assert in_ == in_order1(bst.root)
assert in_ == in_order2(bst.root)
assert in_ == in_order3(bst.root)
post = bst.post_order()
assert post == post_order1(bst.root)
assert post == post_order2(bst.root)
def __init__(self):
self.tree = BinaryTree()
self.size = 0
def complex_tree():
t = BinaryTree()
t.insert(100)
t.insert(80)
t.insert(60)
t.insert(40)
t.insert(20)
t.insert(50)
t.insert(70)
t.insert(90)
t.insert(85)
t.insert(95)
t.insert(120)
t.insert(140)
t.insert(160)
t.insert(180)
t.insert(110)
t.insert(175)
t.insert(170)
t.insert(176)
return t
def empty_tree():
t = BinaryTree()
return t
def test_binarytree():
t = BinaryTree()
assert t.root is None
def small_binary_tree():
bt = BinaryTree([10, 4, 39])
return bt
def test_balance_one_node_tree_returns_1():
t = BinaryTree()
t.insert(1)
assert t.balance() == 0
def test_balance_one_node_tree_returns_1():
t = BinaryTree()
t.insert(1)
assert t.balance() == 0