小榕流光的专栏

题目链接：https://leetcode.com/problems/multiply-strings/ Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and

题目链接：https://leetcode.com/problems/add-strings/ Given two non-negative numbers num1 and num2 represented as string, return the sum of num1 and num2. Note: The length of both num1 and num2