public static void deleteNode(ListNode node) {
ListNode nn = node.next;
while (nn.next != null) {
node.val = nn.val;
node = nn;
nn = nn.next;
}
node.val = nn.val;
node.next = null;
}
public static void deleteNode(ListNode node) {
ListNode nn = node.next;
while (nn.next != null) {
node.val = nn.val;
node = nn;
nn = nn.next;
}
node.val = nn.val;
node.next = null;
}