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

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