Why TLE on this Python code?

  • 0
    # Definition for a binary tree node.
    # class TreeNode(object):
    #     def __init__(self, x):
    #         self.val = x
    #         self.left = None
    #         self.right = None
    class Solution(object):
        def isBalanced(self, root):
            :type root: TreeNode
            :rtype: bool
            if not root: return True
            return self.getHeightDFS(root)!=-1
        def getHeightDFS(self, root):
            if not root: return 0
            if leftH==-1: return -1
            if rightH==-1: return -1
            if abs(leftH-rightH)>1: return -1
            return max(self.getHeightDFS(root.left), self.getHeightDFS(root.right))+1

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