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public/subjects/inverttree.en.md

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invert tree

Instructions:

Write a function that takes tree and inverts(flips) and returns it.

type Node struct {
    Val     int
    Left    *Node
    Right   *Node
}

Example:

Input:
      7
    /   \
   5     10
  / \    / \
 3   6  9  13

Output:
        7
     /    \
   10      5
  / \     / \
13   9   6   3

Expected function:

func InvertTree(root *Node) *Node {
}