Question
In algorithms, for BinarySearchTree class' insert method (def insert(self, data): ), you 1) create the Node object from the data 2) check to see if root is empty (if so make the new Node root), 3) if root is not empty, create current pointer to root, and parent pointer (to None initially) 4) go into "while True:" loop and in loop make parent the current, 5) in loop, check value of current (compared to new Node data) to see if current is to shift to right or left subtree and [...] (so short circuit loop):
class Node:
def __init__(self, data):
self.data = data
self.left_child = None
self.right_child = None

class Tree:
def __init__(self):
self.root_node = None

def insert(self, data):
# 1. create the Node object with the data
node = Node(data)
# 2. if root is None, make this new node the root
if self.root_node == None:
self.root_node = node
else:
# 3. if root exists, then create a current pointer initialized to root, and a parent pointer (None initially)
current = self.root_node
parent = None
# 4. go into "while True:" loop and in loop make parent the current
while True:
parent = current
# 5. in loop compare the new node data to current node data and either go left side
#    or right side of tree (and....
if node.data <= current.data:
current = current.left_child
?????????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
else:
current = current.right_child
?????????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
if current is None, you found right place to insert, so insert using parent pointer:
                # 5. in loop compare the new node data to current node data and either go left side
#    or right side of tree and ...
if node.data <= current.data:
current = current.left_child
#...and if you hit current of None, use the parent pointer to insert new node and
# short circuit loop, other wise the loop will continue down the tree
if current is None:
parent.left_child = node
return
else:
current = current.right_child
#...and if you hit current of None, use the parent pointer to insert new node and
# short circuit loop, other wise the loop will continue down the tree
if current is None:
parent.right_child = node
return

Question
In algorithms, for BinarySearchTree class' insert method (def insert(self, data): ), you 1) create the Node object from the data 2) check to see if root is empty (if so make the new Node root), 3) if root is not empty, create current pointer to root, and parent pointer (to None initially) 4) go into "while True:" loop and in loop make parent the current, 5) in loop, check value of current (compared to new Node data) to see if current is to shift to right or left subtree and [...] (so short circuit loop):
class Node:
def __init__(self, data):
self.data = data
self.left_child = None
self.right_child = None

class Tree:
def __init__(self):
self.root_node = None

def insert(self, data):
# 1. create the Node object with the data
node = Node(data)
# 2. if root is None, make this new node the root
if self.root_node == None:
self.root_node = node
else:
# 3. if root exists, then create a current pointer initialized to root, and a parent pointer (None initially)
current = self.root_node
parent = None
# 4. go into "while True:" loop and in loop make parent the current
while True:
parent = current
# 5. in loop compare the new node data to current node data and either go left side
#    or right side of tree (and....
if node.data <= current.data:
current = current.left_child
?????????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
else:
current = current.right_child
?????????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
?

Question
In algorithms, for BinarySearchTree class' insert method (def insert(self, data): ), you 1) create the Node object from the data 2) check to see if root is empty (if so make the new Node root), 3) if root is not empty, create current pointer to root, and parent pointer (to None initially) 4) go into "while True:" loop and in loop make parent the current, 5) in loop, check value of current (compared to new Node data) to see if current is to shift to right or left subtree and [...] (so short circuit loop):
class Node:
def __init__(self, data):
self.data = data
self.left_child = None
self.right_child = None

class Tree:
def __init__(self):
self.root_node = None

def insert(self, data):
# 1. create the Node object with the data
node = Node(data)
# 2. if root is None, make this new node the root
if self.root_node == None:
self.root_node = node
else:
# 3. if root exists, then create a current pointer initialized to root, and a parent pointer (None initially)
current = self.root_node
parent = None
# 4. go into "while True:" loop and in loop make parent the current
while True:
parent = current
# 5. in loop compare the new node data to current node data and either go left side
#    or right side of tree (and....
if node.data <= current.data:
current = current.left_child
?????????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
else:
current = current.right_child
?????????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
?????????????????????????????????????????????????????????????????
if current is None, you found right place to insert, so insert using parent pointer:
                # 5. in loop compare the new node data to current node data and either go left side
#    or right side of tree and ...
if node.data <= current.data:
current = current.left_child
#...and if you hit current of None, use the parent pointer to insert new node and
# short circuit loop, other wise the loop will continue down the tree
if current is None:
parent.left_child = node
return
else:
current = current.right_child
#...and if you hit current of None, use the parent pointer to insert new node and
# short circuit loop, other wise the loop will continue down the tree
if current is None:
parent.right_child = node
return
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#### pdf

owner: kkhosravi - (no access) - PYTHON_DATA_STRUCTURES_AND_ALGORITHMS.pdf, p155

#### Summary

status measured difficulty not learned 37% [default] 0

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