LinkedList Loop Solution - Remove Duplicates from Sorted List

Two pointers, and update both if not the same, otherwise update the second and adjust the first's next pointer.

/**
 * Definition for singly-linked list.
 * public class ListNode {
 *     int val;
 *     ListNode next;
 *     ListNode(int x) {
 *         val = x;
 *         next = null;
 *     }
 * }
 */
public class Solution {
    public ListNode deleteDuplicates(ListNode head) {
        if(head == null){
            return head;
        }
        ListNode curNode = head;
        ListNode node = curNode.next;
        while(node != null){
            if(node.val == curNode.val){
                ListNode temp = node;
                node = node.next;
                curNode.next = node;
                temp.next = null;
            }else{
                curNode = node;
                node = node.next;
            }
        }
        return head;
    }
}