951. Flip Equivalent Binary Trees
https://leetcode.com/problems/flip-equivalent-binary-trees/
solution
class Solution:
def flipEquiv(self, root1: Optional[TreeNode], root2: Optional[TreeNode]) -> bool:
if root1 is None and root2 is None:
return True
if root1 is None or root2 is None:
return False
if root1.val != root2.val:
return False
return ((self.flipEquiv(root1.left, root2.left) and self.flipEquiv(root1.right, root2.right))
or (self.flipEquiv(root1.right, root2.left) and self.flipEquiv(root1.left, root2.right)))
时间复杂度:O(n) 空间复杂度:O(h)
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