class Solution {
public:
    vector<int> printListFromTailToHead(ListNode* head) {
        ListNode* p=head;
        int count=0;
        while(p){
            count++;
            p=p->next;
        }
        vector<int> b(count);
        for(int j=0;j<count;j++){
            b[count-j-1]=head->val;
            head=head->next;
        }
        return b;
    }
};