LeetCode:43. Multiply Strings

LeetCode:43. 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.

就是两个值为整数的字符串相乘，将他们的乘积也用字符串表示。

思路

先将两个数分别转化为整型，然后相乘，再将乘积转化为字符串

Python 代码实现

class Solution:
    def strToInt(self, s):
        res = 0
        l = len(s)
        pos = 0
        while pos < l:
            iP = (int)(s[pos])
            res+=(iP)*pow(10,l-pos-1)
            pos+=1
        return res
    
    def multiply(self, num1: str, num2: str) -> str:
        i1 = self.strToInt(num1)
        i2 = self.strToInt(num2)
        return str(i1*i2)

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THE END.