描述
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list.
Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)
Output: 7 -> 0 -> 8
#include <stack>
#include <iostream>
#include <queue>
using namespace std;
struct ListNode {
int val;
ListNode *next;
ListNode(int x) : val(x), next(NULL) {}
};
class Solution {
public:
ListNode* addTwoNumbers(ListNode* l1, ListNode* l2){
queue<int> q;
int carry=0;
while(l1!=NULL||l2!=NULL)
{
int val,val1,val2;
val=((l1==NULL)?0:l1->val)+((l2==NULL)?0:l2->val)+carry;
if(val>=10)
{
q.push(val-10);
carry=1;
}
else
{
q.push(val);
carry=0;
}
if(l1!=NULL)
l1=l1->next;
if(l2!=NULL)
l2=l2->next;
}
if(carry)
q.push(1);
ListNode* l3=new ListNode(q.front());
q.pop();
ListNode* lt=l3;
while(!q.empty())
{
lt->next=new ListNode(q.front());
q.pop();
lt=lt->next;
}
return l3;
}
int printList(ListNode *l)
{
while(l!=NULL)
{
cout<<l->val<<"--> ";
l=l->next;
}
return 0;
}
};
#include "addTwoNumbers.h"
#include <iostream>
using namespace std;
int main()
{
Solution sl1;
ListNode *l1=new ListNode(9);
l1->next=new ListNode(9);
ListNode *l2=new ListNode(1);
//l2->next=new ListNode(6);
ListNode *l3=sl1.addTwoNumbers(l1,l2);
sl1.printList(l3);
return 0;
}