[LeetCode]83. Remove Duplicates from Sorted List

Easy

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.

2ms:

 public ListNode deleteDuplicates(ListNode head) {        if(head==null||head.next==null)            return head;        ListNode p = head;        while(p!=null&&p.next!=null){            if(p.val==p.next.val)                p.next = p.next.next;            else                p = p.next;        }        return head;    }