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subject fix

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lee 5 years ago
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  1. 20
      subjects/inverttree.en.md

20
subjects/inverttree.en.md

@ -11,18 +11,27 @@ This means that:
- The function main declared needs to **also pass** the `Restrictions Checker`(illegal functions tester). It is advised for the student to just empty the function main after its own testings are done.
- Every other rules are obviously the same than for a `program`.
### Instructions
### Instructions:
Write a function that takes tree and inverts(flips) and returns it.
```
### Expected function and structure
```go
type TNode struct {
Val int
Left *TNode
Right *TNode
}
func InvertTree(root *TNode) *TNode {
}
```
Example:
```
```shell
Input:
7
/ \
@ -37,8 +46,3 @@ Output:
/ \ / \
13 9 6 3
```
Expected function:
```
func InvertTree(root *TNode) *TNode {
}
```

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