题目描述
输入一个链表,从尾到头打印链表每个节点的值。
代码
/**
* struct ListNode {
* int val;
* struct ListNode *next;
* ListNode(int x) :
* val(x), next(NULL) {
* }
* };
*/
class Solution {
public:
vector<int> printListFromTailToHead(ListNode* head) {
vector<int> ans;
ListNode* cur = head;
while (cur != NULL) {
ans.push_back(cur->val);
cur = cur->next;
}
int temp;
for (int i= 0, j = ans.size() - 1; i < j; ++i, --j) {
temp = ans[i];
ans[i] = ans[j];
ans[j] = temp;
}
return ans;
}
};