19 lines
292 B
Go
19 lines
292 B
Go
package q226
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type TreeNode struct {
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Val int
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Left *TreeNode
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Right *TreeNode
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}
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func invertTree(root *TreeNode) *TreeNode {
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if root == nil {
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return nil
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}
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root.Left, root.Right = root.Right, root.Left
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invertTree(root.Left)
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invertTree(root.Right)
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return root
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}
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var _ = invertTree
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