/* struct ListNode { int val; struct ListNode *next; ListNode(int x) : val(x), next(NULL) { } };*/ class Solution { public: ListNode* FindFirstCommonNode( ListNode* pHead1, ListNode* pHead2) { // 只要有一条链表为空则表示没有公共结点 if (pHead1 == nullptr || pHead2 == nullptr) { return nullptr; } int len1 = 0, len2 = ...