兖州城乡建设局网站一手app推广接单平台
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
}