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 -&…

[Problem:2-Add Two Numbers] You are given two non-empty linked lists representing two non-negative integers. 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. Yo…

2. Add Two Numbers 官方的链接:2. Add Two Numbers Description : You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and…

问题: 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. Example: Input: (2 -> 4 -> 3) + (5…

题目描述: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.(给你两个链表,表示两个非负整数.数字在链表中按反序存储,例如342在链表…

题目链接 题目要求: 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 -&g…

题目难度:Medium 题目: You are given two non-empty linked lists representing two non-negative integers. 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. You may assume…

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 ->…

题干: You are given two non-empty linked lists representing two non-negative integers. 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. You may assume the two num…

You are given two non-empty linked lists representing two non-negative integers. 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. You may assume the two numbers…

Medium! 题目描述: 给定两个非空链表来表示两个非负整数.位数按照逆序方式存储,它们的每个节点只存储单个数字.将两数相加返回一个新的链表. 你可以假设除了数字 0 之外,这两个数字都不会以零开头. 示例: 输入:(2 -> 4 -> 3) + (5 -> 6 -> 4) 输出:7 -> 0 -> 8 原因:342 + 465 = 807 思路: 本题的思路很简单,按照小学数学中学习的加法原理从末尾到首位,对每一位对齐相加即可.技巧在于如何处理不同长度的数字,以及进…

You are given two linked lists representing two non-negative numbers. The most significant digit comes first and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two numbers do not con…

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 ->…

[本文链接] http://www.cnblogs.com/hellogiser/p/add-two-numbers-without-arithmetic.html [题目] 写一个函数,求两个整数的之和,要求在函数体内不得使用+.-.×.÷. [分析] 这是一道考察发散思维的很有意思的题目.当我们习以为常的东西被限制使用的时候,如何突破常规去思考,就是解决这个问题的关键所在. 普通四则运算都不能用,那还能用什么啊?我们会想到位运算,因为四则运算本质上都可以通过位运算实现. 举个例子: 首先我们…

2.5 You have two numbers represented by a linked list, where each node contains a single digit. The digits are stored in reverse order, such that the 1's digit is at the head of the list. Write a function that adds the two numbers and returns the sum…

原题链接在这里:https://leetcode.com/problems/add-two-numbers-ii/ 题目: You are given two linked lists representing two non-negative numbers. The most significant digit comes first and each of their nodes contain a single digit. Add the two numbers and return…

Two Sum 题目:https://leetcode.com/problems/two-sum/ class Solution(object): def twoSum(self, nums, target): map = {} for index, value in enumerate(nums): if target - value in map: return [map[target - value] + 1, index + 1] map[value] = index Add Two N…

链接:http://leetcode.com/onlinejudge 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 lin…

LeetCode(2) || Add Two Numbers && Longest Substring Without Repeating Characters 题记 刷LeetCode第二天,今天做了两道题,速度比我想的要慢,看样子两个月的目标有点难,尽力吧.今天主要做了Add Two Numbers和Longest Substring Without Repeating Characters 两道题,下面就来看下这两道题吧. 题一:Add Two Numbers 题目内容 You ar…

1 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 -…

题目意思很简单,两个链表分别表示两个数,将两个数相加的结果存入一个新的链表中. 思路同样很简单:两个链表如果一样长,对应位置相加,如果某一个链表多了,则根据加的结果有无进位继续处理,全部结束后要考虑会不会还剩进位. c++的链表,题目已经给了一个挺好的例子: struct ListNode { int val; ListNode *next; ListNode(int x) : val(x), next(NULL) {} }; 对于创建链表可以使用一个头节点来一直指向这个链表,头节点中没有数据…

题目: LeetCode:1. Add Two Numbers 描述: Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice.…

索引 思路1:基本加法规则 思路2:移花接木法... 问题描述:https://leetcode.com/problems/add-two-numbers/ 思路1:基本加法规则 根据小学学的基本加法规则.....我们需要将两个数以最低位为基准对齐,然后逐个加,需要进位的给进位就行了....恰好这个链表是逆序的!!!已经为我们对齐了.用两个指针分别指向两个链表头,开始同步往后移动,边移动边计算结果,直到两个指针都到了尽头/没有进位.时间复杂度是O(max(m, n)),空间复杂度和时间复杂度一样…

Add Two Numbers 方法一: 考虑到有进位的问题,首先想到的思路是: 先分位求总和得到 totalsum,然后再将totalsum按位拆分转成链表: ListNode* addTwoNumbers(ListNode* l1, ListNode* l2) { ; ; while(l1 != NULL && l2 != NULL) { sum += i*(l1->val + l2->val); i *= ; l1 = l1->next; l2 = l2->n…

add two numbers 看题一脸懵逼,看中文都很懵逼,链表怎么实现的,点了debug才看到一些代码 改一下,使本地可以跑起来 # Definition for singly-linked list. class ListNode: def __init__(self, x): self.val = x self.next = None class Solution: def addTwoNumbers(self, l1, l2): """ :type l1: List…

Add Two NumbersYou 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…

题目描述: 解题思路: 给定两个链表(代表两个非负数),数字的各位以正序存储,将两个代表数字的链表想加获得一个新的链表(代表两数之和). 如(7->2->4->3)(7243) + (5->6->4)(564) = (7->8->0->7)(7807) 此题与[LeetCode2]Add Two Numbers解决思路类似,不同之处在于此题的数字以正序存储,故需要借助栈. Java代码: import java.util.Stack; //public cl…

Add Two Numbers I You have two numbers represented by a linked list, where each node contains a single digit. The digits are stored in reverse order, such that the 1's digit is at the head of the list. Write a function that adds the two numbers and r…

反向存储,从左往右加 ［抄题］: 你有两个用链表代表的整数,其中每个节点包含一个数字.数字存储按照在原来整数中相反的顺序,使得第一个数字位于链表的开头.写出一个函数将两个整数相加,用链表形式返回和.给出两个链表 3->1->5->null 和 5->9->2->null,返回 8->0->8->null [暴力解法]: 时间分析: 空间分析: ［思维问题］: 直接从左往右加就行,没看出来. 链表结构改变时要添加dummy,返回的是dummy.next…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ ` 2.Add Two Numbers [M] Add Two Numbers M 题目 思路 代码 更精巧的代码 题目 You are given two linked lists representing two non-negative numbers. The…