删除链表中的节点

class Solution {
    public ListNode deleteNode(ListNode node,ListNode head) {
        //使用两个指针记录当前元素和上一个元素，通过对比当前元素是否是要删除的元素
        ListNode slow = head，fast = head.next,newhead = head;
        while(fast.val != node.val){
            fast = fast.next;
            slow = slow.head;
        }
        slow.next = slow.next.next;
        return newhead;
    }
}