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목록43. Multiply Strings (2)
Scribbling
class Solution: def multiply(self, num1: str, num2: str) -> str: if num1 == '0' or num2 == '0': return '0' ret = [0] * (len(num1) + len(num2)) for i in range(len(num1)-1, -1, -1): carry = 0 for j in range(len(num2)-1, -1, -1): temp = ret[i+j+1] + int(num1[i]) * int(num2[j]) + carry carry = temp // 10 ret[i+j+1] = temp % 10 ret[i] = carry ret = ''.join(map(str, ret)) return ret.lstrip('0')
class Solution: def multiply(self, num1: str, num2: str) -> str: if num1 == '0' or num2 == '0': return '0' ret = [0] * (len(num1) + len(num2)) for i in range(len(num1)-1, -1, -1): carry = 0 for j in range(len(num2)-1, -1, -1): temp = ret[i+j+1] + int(num1[i]) * int(num2[j]) + carry carry = temp // 10 ret[i+j+1] = temp % 10 ret[i] = carry ret = ''.join(map(str, ret)) return ret.lstrip('0')