删除链表中节点

class :
    def removeElements(self, head, val):
        """
        :type head: ListNode
        :type val: int
        :rtype: ListNode
        """
        p = ListNode(0)
        p.next = head
        cur_node = p
        while cur_node and cur_node.next:
            if cur_node.next.val == val:
                cur_node.next = cur_node.next.next
            else:
                cur_node = cur_node.next
        return p.next

linklist = creat_ll([1, 2, 6, 3, 4, 5, 6])
a = Solution().removeElements(linklist, 6)
print_ll(a)