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## listpushback
6 years ago
### Instructions
Write a function `ListLast` that returns the last element of the linked list.
### Expected function and structure
```go
type Node struct {
Data interface{}
Next *Node
}
type List struct {
Head *Node
Tail *Node
}
func ListLast(l *List) interface{} {
}
```
### Usage
Here is a possible [program](TODO-LINK) to test your function :
```go
package main
import (
"fmt"
piscine ".."
)
func main() {
link := &piscine.List{}
link2 := &piscine.List{}
piscine.ListPushBack(link, "three")
piscine.ListPushBack(link, 3)
piscine.ListPushBack(link, "1")
fmt.Println(piscine.ListLast(link))
fmt.Println(piscine.ListLast(link2))
}
```
And its output :
```console
student@ubuntu:~/piscine/test$ go build
student@ubuntu:~/piscine/test$ ./test
1
<nil>
student@ubuntu:~/piscine/test$
```