Leetcode 43. Multiply Strings (Python)

最新推荐文章于 2025-12-20 20:19:18 发布

原创最新推荐文章于 2025-12-20 20:19:18 发布 · 607 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#leetcode #算法 #职场和发展 #java #大数据

本文介绍了一种不使用内置的大数库或直接将输入转换为整数的方法，来计算两个以字符串形式给出的非负整数的乘积。通过具体实例展示了如何进行这种计算。

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 library or convert the inputs to integer directly.

Example 1:

Input: num1 = "2", num2 = "3"
Output: "6"

Example 2:

Input: num1 = "123", num2 = "456"
Output: "56088"

Constraints:

1 <= num1.length, num2.length <= 200
num1 and num2 consist of digits only.
Both num1 and num2 do not contain any leading zero, except the number 0 itself.

class Solution(object):
    def multiply(self, num1, num2):
        """
        :type num1: str
        :type num2: str
        :rtype: str
        """
        return str(int(num1)*int(num2))