题目
代码语言：javascript复制/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x) : val(x), next(NULL) {}
* };
*/
class Solution {
public:
int getDecimalValue(ListNode* head) {
int ans=0;
while(head!=NULL)
{
ans = (ans<<1)|(head->val);
head=head->next;
}
return ans;
}
};
