 # 108. Convert Sorted Array to BST
 # 
 # 
 # #
    
  
class TreeNode:
    
    def __init__(self, val=0, left=None, right=None):
        self.val = val
        self.left = left
        self.right = right
        
def BTPreINTraversal(self,root):
    if root in None:
        return
 # 108. Convert Sorted Array to BST
 # 
 # 
 # #
    
  
class TreeNode:
    
    def __init__(self, val=0, left=None, right=None):
        self.val = val
        self.left = left
        self.right = right
        
def BTPreINTraversal(self,root):
    if root in None:
        return
# 108. Convert Sorted Array to BST # # # #