/* struct ListNode { int val; struct ListNode *next; ListNode(int x) : val(x), next(NULL) { } };*/ class Solution { public: ListNode* FindFirstCommonNode( ListNode* pHead1, ListNode* pHead2) { unordered_map<ListNode *, int> m; //将pHead1的节点全部放入map中 while(pHead1){ m[pHead1]++; pHead1 = pHead1-&g...