暴力行為
class Solution:
def mergeKLists(self, lists: List[ListNode]) -> ListNode:
m=[]
head=point=ListNode(0)
for i in lists:
while i:
m.append(i.val)
i=i.next
m.sort()
for i in m:
point.next=ListNode(i)
point=point.next
return head.next