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题目:

题解:
func invertTree(root *TreeNode) *TreeNode {if root == nil {return nil}left := invertTree(root.Left)right := invertTree(root.Right)root.Left = rightroot.Right = leftreturn root
}题目:

题解:
func invertTree(root *TreeNode) *TreeNode {if root == nil {return nil}left := invertTree(root.Left)right := invertTree(root.Right)root.Left = rightroot.Right = leftreturn root
}