leetcode: 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:这道题主要考察的点是大数相乘 首先我们的弄明白两个数相乘的过程,即错位相加 然后分别用两个数组...
Can you solve this real interview question? Multiply Strings - Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. Note: You must not use any built-in BigInteger librar
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. 接口:public String multiply(String num1, String num2); 2 思路 大整数的乘法,不能够简单用Integer.valueOf(String s),会产生溢出错误。 我们...
stringmultiply(stringnum1,stringnum2){ if(num1[0]=='0'||num2[0]=='0')returnstring("0");//有的数直接是0,则按照后面来分配大小,则找不到不是0的数,或者还是有剩下很多个0 intnum1_size = num1.size(); intnum2_size = num2.size(); intnum = (num1_size > num2_size) ?1:0;...
Leetcode | 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. 还是不要想得太复杂。一开始还想着要4位4位二分去做。其实只要一位一位地乘,小心地维护好进位就好。
https://leetcode.com/problems/multiply-strings/ python 一行搞定。因为乘法结果太大的话,python会自动增加存储位数。 思路1 这里思路就是按照乘法的规则,可以将结果存在len(nums1) + len(nums2)的结果中,每一位保存结果的个位十位百位。。。因为两个数字相乘,其结果最大也就这么长,这个数组最大长度是num1....
【leetcode】Multiply Strings 题目:给定两个表示大数的字符串。求乘积,这里仅仅针对正数。 分析:開始的时候打算一位一位的算。按着笔算的形式。可是写着写着发现太麻烦,后来在网上找到计算乘法的令一种技巧,感觉简洁多了。 先看代码,再分析。 stringmultiply(string num1,string num2){if(num1=="0"||num2=...
LeetCode 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. 题意:字符串的乘法。 思路:摹拟竖乘的思路,跟大数计算1样,先将字符串颠倒...
Java Solution publicStringmultiply(Stringnum1,Stringnum2){Stringn1=newStringBuilder(num1).reverse().toString();Stringn2=newStringBuilder(num2).reverse().toString();int[]d=newint[num1.length()+num2.length()];//multiply each digit and sum at the corresponding positionsfor(inti=0;i<n1.length...
Multiply Strings 是一个 Java 题解,用于解决字符串乘法问题。这个问题要求我们实现一个函数,输入两个字符串,输出它们的乘积。 解题思路: 1. 首先,我们需要遍历第一个字符串的每个字符,将其与第二个字符串的每个字符相乘。 2. 然后,我们将结果累加到一个新的字符串中。 3. 最后,返回新字符串作为结果。 代码...