multiply-strings

java

python

python3

mysql

mssql

oraclesql

csharp

javascript

typescript

bash

swift

kotlin

dart

golang

ruby

scala

rust

racket

erlang

elixir

pythondata

postgresql

cangjie

Algorithms

Given two non-negative integers <code>num1</code> and <code>num2</code> represented as strings, return the product of <code>num1</code> and <code>num2</code>, also represented as a string.

Note:&nbsp;You must not use any built-in BigInteger library or convert the inputs to integer directly.

&nbsp;
Example 1:
<pre>Input: num1 = "2", num2 = "3"
Output: "6"
</pre>Example 2:
<pre>Input: num1 = "123", num2 = "456"
Output: "56088"
</pre>
&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= num1.length, num2.length &lt;= 200</code></li>
	<li><code>num1</code> and <code>num2</code> consist of digits only.</li>
	<li>Both <code>num1</code> and <code>num2</code>&nbsp;do not contain any leading zero, except the number <code>0</code> itself.</li>
</ul>

multiply

Multiply Strings

Add Two Numbers

add-two-numbers

两数相加

Plus One

plus-one

加一

Add Binary

add-binary

二进制求和

Add Strings

add-strings

字符串相加

Apply Discount to Prices

apply-discount-to-prices

价格减免

Math

String

Simulation

给定两个以字符串形式表示的非负整数&nbsp;<code>num1</code>&nbsp;和&nbsp;<code>num2</code>，返回&nbsp;<code>num1</code>&nbsp;和&nbsp;<code>num2</code>&nbsp;的乘积，它们的乘积也表示为字符串形式。

注意：不能使用任何内置的 BigInteger 库或直接将输入转换为整数。

&nbsp;

示例 1:

<pre>
输入: num1 = "2", num2 = "3"
输出: "6"</pre>

示例&nbsp;2:

<pre>
输入: num1 = "123", num2 = "456"
输出: "56088"</pre>

&nbsp;

提示：

<ul>
	<li><code>1 &lt;= num1.length, num2.length &lt;= 200</code></li>
	<li><code>num1</code>&nbsp;和 <code>num2</code>&nbsp;只能由数字组成。</li>
	<li><code>num1</code>&nbsp;和 <code>num2</code>&nbsp;都不包含任何前导零，除了数字0本身。</li>
</ul>