> For the complete documentation index, see [llms.txt](https://mayanktyagi3111.gitbook.io/interview-prep/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mayanktyagi3111.gitbook.io/interview-prep/linked-list/remove-duplicates-from-sorted-list.md).

# Remove Duplicates from Sorted List

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

For example,\
Given `1->1->2`, return `1->2`.\
Given `1->1->2->3->3`, return `1->2->3`.

```java
public class Solution {
    public ListNode deleteDuplicates(ListNode A) {
        if (A == null)
            return A;
        ListNode temp1 = A;
        while (temp1 != null) {
            ListNode temp2 = temp1;
            while (temp2 != null && temp1.val == temp2.val)
                temp2 = temp2.next;
            temp1.next = temp2;
            temp1=temp1.next;
        }
        return A;
    }
}
```