## revconcatalternate
### Instructions
Write a function `RevConcatAlternate()` that receives two slices of `int` as arguments and returns a new slice with alternated values of each slice in reverse order.
- The input slices can have different lengths.
- The new slice should contain the elements of the larger slice first and then the elements of the smaller slice.
- If the slices are of equal length, the new slice should contain the elements of the first slice first and then the elements of the second slice.
### Expected function
```go
func RevConcatAlternate(slice1,slice2 []int) []int {
}
```
### Usage
Here is a possible program to test your function:
```go
package main
import (
"fmt"
"piscine"
)
func main() {
fmt.Println(piscine.RevConcatAlternate([]int{1, 2, 3}, []int{4, 5, 6}))
fmt.Println(piscine.RevConcatAlternate([]int{1, 2, 3}, []int{4, 5, 6, 7, 8, 9}))
fmt.Println(piscine.RevConcatAlternate([]int{1, 2, 3}, []int{}))
}
```
And its output:
```console
$ go run .
[3 6 2 5 1 4]
[9 3 8 2 7 1 6 5 4]
[3 2 1]
```
