class Solution {
public: vector<int> printListFromTailToHead(ListNode* head) { /* //变量定义区 vector<int> result; std::stack<int> stk; ListNode* current = head;//入参有效性判断
if(NULL == head) return result; //数据入栈 while(current != NULL) { stk.push(current->val); //stack入栈函数push函数 current = current->next; } //数据出栈 while(!stk.empty()) { int val = stk.top(); result.push_back(val); //vector添加操作 stk.pop(); } return result; */ //递归实现 ListNode* current = head; vector<int> result; if(current != NULL) { if(current->next !=NULL) { result = printListFromTailToHead(current->next); } result.push_back(current->val);}
return result; }};
程序已通过牛客网测试用例。