Delete Node in a Linked List

/**
 * Definition for singly-linked list.
 * public class ListNode {
 *     public int val;
 *     public ListNode next;
 *     public ListNode(int x) { val = x; }
 * }
 */
public class Solution {
    public void DeleteNode(ListNode node) {
        while(node.next!=null&&node.next.next!=null)
        {
            node.val=node.next.val;
            node=node.next;
        }
        if(node.next==null)return;
        if(node.next.next==null){
            node.val=node.next.val;
            node.next=null;
        }
    }
}