Tell us what’s happening:
I really don’t know what I’m doing wrong the code doesn’t pass no matter what, 1. You should prepend the return statement to your _search() call. I think I’m doing what the step is asking, any advice?
Your code so far
class TreeNode:
def __init__(self, key):
self.key = key
self.left = None
self.right = None
class BinarySearchTree:
def __init__(self):
self.root = None
def _insert(self, node, key):
if node is None:
return TreeNode(key)
if key < node.key:
node.left = self._insert(node.left, key)
elif key > node.key:
node.right = self._insert(node.right, key)
return node
def insert(self, key):
self.root = self._insert(self.root, key)
# User Editable Region
def _search(self, node, key):
if node is None or node.key == key:
return node
if key < node.key:
return self._search(node.left, key)
return self._search(node.right, key)
def search(self, key):
self._search(self.root, key)
return self._search()
# User Editable Region
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Challenge Information:
Learn Tree Traversal by Building a Binary Search Tree - Step 25
