【LeetCode】43. Multiply Strings 解题报告（Python & C++）

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录题目描述题目大意解题方法日期题目地址:https://leetcode.com/problems/multiply-strings/description/ 题目描述 Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and nu…

[LeetCode] 43. Multiply Strings ☆☆☆(字符串相乘)

转载:43. Multiply Strings 题目描述就是两个数相乘,输出结果,只不过数字很大很大,都是用 String 存储的.也就是传说中的大数相乘. 解法一我们就模仿我们在纸上做乘法的过程写出一个算法. 个位乘个位,得出一个数,然后个位乘十位,全部乘完以后,就再用十位乘以各个位.然后百位乘以各个位,最后将每次得出的数相加.十位的结果要补 1 个 0 ,百位的结果要补两个 0 .相加的话我们可以直接用之前的大数相加.直接看代码吧. public String multiply(Stri…

LeetCode: Multiply Strings 解题报告

Multiply StringsGiven two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. SOLUTION 1: 参考自http://blog.csdn.net/fightforyourdream/article/details/1737049…

[LeetCode] 43. Multiply Strings 字符串相乘

Given two non-negative integers num1 and num2represented as strings, return the product of num1 and num2, also represented as a string. Example 1: Input: num1 = "2", num2 = "3" Output: "6" Example 2: Input: num1 = "123&q…

Java [Leetcode 43]Multiply Strings

题目描述: Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 解题思路: 设置数组记录单个位置相乘的结果,最后负责相加进位. 代码如下: public class Solution { public String multiply(St…

LeetCode(43. Multiply Strings)

题目: Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 思路比较简单,不多说啦几个需要注意的点: 1. 高位多个为0的,需要进行判断 2. 如果乘数为0的话,可以直接跳过,能节省不少时间 3. string 的两个使用 1) 创建有…

[leetcode]43. Multiply Strings高精度乘法

Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. Example 1: Input: num1 = "2", num2 = "3" Output: "6" Example 2: Input: num1 = "123&…

LeetCode 43 Multiply Strings（字符串相乘）

题目链接: https://leetcode.com/problems/multiply-strings/?tab=Description 求解大数相乘问题按照上图所示,进行嵌套循环计算.每次计算出两个位置上的数字,并且对其求和进行更新操作. 下面这个讲解很赞!!! https://discuss.leetcode.com/topic/30508/easiest-java-solution-with-graph-explanation/3 参考代码: package l…

leetcode 43. Multiply Strings(高精度乘法)

Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. Converting the input string to integer is NOT allowed. You should NOT use internal library su…

leetcode 43 Multiply Strings 大数相乘

感觉是大数相乘算法里面最能够描述.模拟演算过程的思路 class Solution { public String multiply(String num1, String num2) { if(num1.charAt(0) == '0' || num2.charAt(0) == '0'){ return "0"; } int len1 = num1.length(); int len2 = num2.length(); int len = len1+len2; int[] arr =…

[Leetcode][Python]43: Multiply Strings

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 43: Multiply Stringshttps://leetcode.com/problems/multiply-strings/ Given two numbers represented as strings, return multiplication of the numbers as a string.Note: The numbers can be arbit…

[LeetCode] 415 Add Strings && 67 Add Binary && 43 Multiply Strings

这些题目是高精度加法和高精度乘法相关的,复习了一下就做了,没想到难住自己的是C++里面string的用法. 原题地址: 415 Add Strings:https://leetcode.com/problems/add-strings/description/ 67 Add Binary: https://leetcode.com/problems/add-binary/description/ 43 Multiply Strings:https://leetcode.com/problems/…

【LeetCode】120. Triangle 解题报告（Python）

[LeetCode]120. Triangle 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址https://leetcode.com/problems/triangle/description/ 题目描述: Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjac…

LeetCode 1 Two Sum 解题报告

LeetCode 1 Two Sum 解题报告偶然间听见leetcode这个平台,这里面题量也不是很多200多题,打算平时有空在研究生期间就刷完,跟跟多的练习算法的人进行交流思想,一定的ACM算法积累可以对以后在对算法中优化带来好处.Ok,今天是我做的第一题Add Two Sum. 题目要求 Given an array of integers, find two numbers such that they add up to a specific target number. The fu…

【LeetCode】Permutations II 解题报告

[题目] Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, [1,1,2] have the following unique permutations: [1,1,2], [1,2,1], and [2,1,1]. [解析] 题意:求一个数组的全排列.与[LeetCode]Permutations 解题报告不同的是…

【LeetCode】Island Perimeter 解题报告

[LeetCode]Island Perimeter 解题报告 [LeetCode] https://leetcode.com/problems/island-perimeter/ Total Accepted: 16143 Total Submissions: 28552 Difficulty: Easy Question You are given a map in form of a two-dimensional integer grid where 1 represents land…

【LeetCode】01 Matrix 解题报告

[LeetCode]01 Matrix 解题报告标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/01-matrix/#/description 题目描述: Given a matrix consists of 0 and 1, find the distance of the nearest 0 for each cell. The distance between two adjacent cells is 1. Example:…

【LeetCode】Largest Number 解题报告

[LeetCode]Largest Number 解题报告标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/largest-number/#/description 题目描述: Given a list of non negative integers, arrange them such that they form the largest number. For example, given [3, 30, 34, 5, 9], t…

【LeetCode】Gas Station 解题报告

[LeetCode]Gas Station 解题报告标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/gas-station/#/description 题目描述: There are N gas stations along a circular route, where the amount of gas at station i is gas[i]. You have a car with an unlimited gas tan…

【LeetCode】43. Multiply Strings

Multiply Strings Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 将乘积逐位逆序存放在int数组result中. 记num1当前为第i位,num2当前为第j位,则乘积存放在result[(n1-1-i)+(n2-1-j…

LeetCode: Unique Paths II 解题报告

Unique Paths II Total Accepted: 31019 Total Submissions: 110866My Submissions Question Solution Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty spa…

Leetcode 115 Distinct Subsequences 解题报告

Distinct Subsequences Total Accepted: 38466 Total Submissions: 143567My Submissions Question Solution Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed fro…

【leetcode】Multiply Strings

Multiply Strings Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 各个位相乘,保存在数组中,最后再处理进位. 如 123*456 4,5,6 8,10,12 12,15,18…

【LeetCode】3Sum Closest 解题报告

[题目] Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly one solution. For example, given array S = {…

LeetCode 043 Multiply Strings

题目要求:Multiply Strings Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 分析: 参考网址:http://blog.csdn.net/pickless/article/details/9235907 利用竖式的思想,…

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