# Remove Duplicates from Sorted List

Given a sorted linked list, delete all duplicates such that each element appear only once.

Example

```
1->1->2 => 1->2
1->1->2->3->3-> => 1->2->3
```

Given a sorted linked list, delete all duplicates such that each element appear only once.

Example

```
1->1->2 => 1->2
1->1->2->3->3-> => 1->2->3
```