/** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * }; */ class Solution { public: vector printListReversingly(ListNode* head) { vector res; ListNode* tail = head; while (tail != NULL) { res.push_back(tail->val); tail = tail->next; } reverse(res.begin(), res.end()); return res; } };