Leet Code 2.两数相加

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Leet Code 2.两数相加

2.两数相加题目描述给出两个非空的链表用来表示两个非负的整数.其中,它们各自的位数是按照逆序的方式存储的,并且它们的每个节点只能存储一位数字.如果,我们将这两个数相加起来,则会返回一个新的链表来表示它们的和. 示例输入:(2 -> 4 -> 3) + (5 -> 6 -> 4) 输出:7 -> 0 -> 8 原因:342 + 465 = 807 解题思路对两个链表的起始位进行相加,保存在第三个链表节点. 需要注意进位,若进位为1,则下一位要加一,若是最后的进位仍…

Leet Code 1.两数之和

给定一个整数nums和一个目标值target,请你在该数组中找出和为目标值的那两个整数,并返回他们的数组下标. 可以假设每种输入只会对应一个答案.但是,不能重复利用这个数组中同样的元素. 题解提交代码 class Solution { public int[] twoSum(int[] nums, int target) { HashMap<Integer, Integer> map = new HashMap<>(); for(int i = 0; i < nums.le…

[CareerCup] 18.1 Add Two Numbers 两数相加

18.1 Write a function that adds two numbers. You should not use + or any arithmetic operators. 这道题让我们实现两数相加,但是不能用加号或者其他什么数学运算符号,那么我们只能回归计算机运算的本质,位操作Bit Manipulation,我们在做加法运算的时候,每位相加之后可能会有进位Carry产生,然后在下一位计算时需要加上进位一起运算,那么我们能不能将两部分拆开呢,我们来看一个例子759+674 1.…

✡ leetcode 167. Two Sum II - Input array is sorted 求两数相加等于一个数的位置 --------- java

Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 m…

[Swift]LeetCode2. 两数相加 | 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. You may assume the two numbers…

[Swift]LeetCode445. 两数相加 II | Add Two Numbers II

You are given two non-empty linked lists representing two non-negative integers. 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…