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# 0083. Remove Duplicates from Sorted List

<https://leetcode.com/problems/remove-duplicates-from-sorted-list>

## Description

Given the `head` of a sorted linked list, *delete all duplicates such that each element appears only once*. Return *the linked list **sorted** as well*.

**Example 1:**

![](https://assets.leetcode.com/uploads/2021/01/04/list1.jpg)

```
**Input:** head = [1,1,2]
**Output:** [1,2]
```

**Example 2:**

![](https://assets.leetcode.com/uploads/2021/01/04/list2.jpg)

```
**Input:** head = [1,1,2,3,3]
**Output:** [1,2,3]
```

**Constraints:**

* The number of nodes in the list is in the range `[0, 300]`.
* `-100 <= Node.val <= 100`
* The list is guaranteed to be **sorted** in ascending order.

## ac

```java
```