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## reversesecondhalf
### Instructions
Write a function that takes a `string` as an argument and returns the second half reversed. If the length of the `string` is odd, round it up.
- Return the second half reversed followed by a newline `\n`.
- If the `string` is empty, return `Invalid Output`.
- If the `string` length equals one, return it, followed by a newline `\n`.
### Expected function
```go
func ReverseSecondHalf(str string) string {
}
```
### Usage
Here is a possible program to test your function:
```go
package main
import (
"fmt"
"piscine"
)
func main() {
fmt.Print(piscine.ReverseSecondHalf("This is the 1st half This is the 2nd half"))
fmt.Print(piscine.ReverseSecondHalf(""))
fmt.Print(piscine.ReverseSecondHalf("Hello World"))
}
```
And its output:
```console
$ go run . | cat -e
flah dn2 eht si sihT
Invalid Output
dlroW
$
2 years ago
```