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6 years ago
## listpushback
6 years ago
### Instructions
Write a function `ListMerge` that places elements of a list `l2` at the end of an other list `l1`.
- You can't create new elements!
- Use pointers when ever you can.
6 years ago
### Expected function and structure
```go
type node struct {
data interface{}
next *node
}
type list struct {
head *node
tail *node
}
func ListMerge(l1 *list, l2 *list) {
}
```
6 years ago
### Usage
Here is a possible [program](TODO-LINK) to test your function :
```go
package main
import (
"fmt"
piscine ".."
)
func PrintList(l *list) {
m := l.head
for m != nil {
fmt.Print(m.data, " -> ")
m = m.next
}
fmt.Print(l.tail)
fmt.Println()
}
func main() {
link := &list{}
link2 := &list{}
piscine.ListPushBack(link, "a")
piscine.ListPushBack(link, "b")
piscine.ListPushBack(link, "c")
piscine.ListPushBack(link, "d")
piscine.ListPushBack(link2, "e")
piscine.ListPushBack(link2, "f")
piscine.ListPushBack(link2, "g")
piscine.ListPushBack(link2, "h")
piscine.ListMerge(link, link2)
PrintList(link)
}
```
And its output :
```console
student@ubuntu:~/piscine/test$ go build
student@ubuntu:~/piscine/test$ ./test
a -> b -> c -> d -> e -> f -> g -> h -> <nil>
student@ubuntu:~/piscine/test$
```