标签:c++
/** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * }; */ class Solution { public: ListNode* addTwoNumbers(ListNode* l1, ListNode* l2) { ListNode *head = new ListNode(0); ListNode *p = head,*q=NULL; int num = 0; int flag = 0; while (l1!= NULL||l2!= NULL) { if (l1 != NULL && l2 != NULL) { int sum = l1->val + l2->val + flag; flag=sum/10; int Lsum = sum % 10; p->val = Lsum; q = p; p->next = new ListNode(0); p = p->next; l1 = l1->next; l2 = l2->next; } else if (l1 == NULL&&l2 != NULL) { int sum = l2->val + flag; flag=sum/10; int Lsum = sum % 10; p->val = Lsum; q = p; p->next = new ListNode(0); p = p->next; l2=l2->next; } else { int sum = l1->val + flag; flag=sum/10; int Lsum = sum % 10; p->val = Lsum; q = p; p->next = new ListNode(0); p = p->next; l1=l1->next; } } if (l1 == NULL&&l2 == NULL) { if (flag == 0) { delete p; q->next = NULL; } else p->val = flag; return head; } } };
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标签:c++
原文地址:http://shineprince.blog.51cto.com/10293320/1913899