16.合并两个排序的链表(python)

题目描述

输入两个单调递增的链表，输出两个链表合成后的链表，当然我们需要合成后的链表满足单调不减规则。

 class Solution:
     # 返回合并后列表
     def Merge(self, pHead1, pHead2):
         # write code here
         dummy =p = ListNode(-1)
         while pHead1 and pHead2:
             if pHead1.val < pHead2.val:
                 p.next=ListNode(pHead1.val)
                 pHead1 = pHead1.next
             else:
                 p.next=ListNode(pHead2.val)
                 pHead2 = pHead2.next
             p = p.next
         if pHead2:
             pHead1=pHead2
         p.next=pHead1
         return dummy.next

2019-12-08 08:58:27