/* struct ListNode { int val; struct ListNode *next; ListNode(int x) : val(x), next(NULL) { } };*/ class Solution { public: ListNode* FindFirstCommonNode( ListNode* pHead1, ListNode* pHead2) { ListNode* l1=pHead1; ListNode* l2=pHead2; //l1到了链表末尾,指向pHead2; //l2到了链表末尾,指向pHead1; while(l1!=l2){ if(l1!=n...