leetcode 2 Add Two Numbers(链表)

数字反过来这个没有什么麻烦，就是镜像的去算十进制加法就可以了，然后就是简单的链表。

/**
 * 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 Ans(0);
        ListNode *p=&Ans;
        int more=0;
        while(l1||l2||more){
            int x=(l1?l1->val:0)+(l2?l2->val:0)+more;
            if(l1) l1=l1->next;
            if(l2) l2=l2->next;
            more=x/10;
            p->next=new ListNode(x%10);
            p=p->next;
        }
        return Ans.next;
    }
};

时间： 2024-10-10 07:20:08

leetcode 2 Add Two Numbers(链表)的相关文章

[LeetCode]2. Add Two Numbers链表相加

注意进位的处理和节点为null的处理 public ListNode addTwoNumbers(ListNode l1, ListNode l2) { int flag = 0; ListNode res = null; ListNode temp = null; //注意如果进位不是0的话还要添加一个节点 while (l1!=null||l2!=null||flag!=0) { int cur = flag; flag = 0; if (l1!=null) { cur+=l1.val; l

LeetCode：Add Two Numbers - 两个链表逐项做带进位的加法生成新链表

1.题目名称 Add Two Numbers (两个链表逐项做带进位的加法生成新链表) 2.题目地址 https://leetcode.com/problems/add-two-numbers/ 3.题目内容英文: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

LeetCode --- 2. Add Two Numbers

题目链接:Add Two Numbers 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

【leetcode】Add Two Numbers 解析以及拓展

题目: 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 -&

leetcode -day20 Add Two Numbers

1. Add Two Numbers 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 ->

［Leetcode］Add Two Numbers

题目 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 -&g

【LeetCode】Add Two Numbers

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 ->