# class ListNode: # def __init__(self, x): # self.val = x # self.next = None # # # @param pHead1 ListNode类 # @param pHead2 ListNode类 # @return ListNode类 # class Solution: def FindFirstCommonNode(self , pHead1 , pHead2 ): # write code here hash_set = set() while pHead1: hash_set.add(pHead1) pHead1 = ...