class ListNode:def init(self, x):self.val = xself.next = None代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可@param lists ListNode类一维数组@return ListNode类class Solution:def mergeKLists(self , lists: List[ListNode]) -> ListNode:# write code here # class ListNode: # def __init__(self, x): # self.val ...