20 lines
586 B
Python
20 lines
586 B
Python
# Definition for a binary tree node.
|
|
# class TreeNode:
|
|
# def __init__(self, val=0, left=None, right=None):
|
|
# self.val = val
|
|
# self.left = left
|
|
# self.right = right
|
|
class Solution:
|
|
def searchBST(self, root: Optional[TreeNode], val: int) -> Optional[TreeNode]:
|
|
current = root
|
|
|
|
while current is not None:
|
|
if val == current.val:
|
|
return current
|
|
elif val < current.val:
|
|
current = current.left
|
|
else:
|
|
current = current.right
|
|
|
|
return None
|