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| class Node:
def __init__(self, key):
self.left = None
self.right = None
self.val = key
def insert(root, key):
if root is None:
return Node(key)
else:
if root.val == key:
return root
elif root.val < key:
root.right = insert(root.right, key)
else:
root.left = insert(root.left, key)
return root
def inorder(root):
if root:
inorder(root.left)
print(root.val)
inorder(root.right)
def min_value_node(node):
current = node
while current.left is not None:
current = current.left
return current
def delete_node(root, key):
if root is None:
return root
if key < root.key:
root.left = delete_node(root.left, key)
elif key > root.key:
root.right = delete_node(root.right, key)
else:
if root.left is None:
temp = root.right
root = None
return temp
elif root.right is None:
temp = root.left
root = None
return temp
temp = min_value_node(root.right)
root.key = temp.key
root.right = delete_node(root.right, temp.key)
return root
def search(root, key):
if root is None:
return None
if key > root.val:
return search(root.right, key)
elif key < root.val:
return search(root.left, key)
else:
return root
|