链接
https://leetcode.cn/problems/add-strings/description/
分析
大数相加而已，倒着遍历，然后相加就好了。
代码
class Solution:
def addStrings(self, num1: str, num2: str) -> str:
num1, num2 = (num1, num2) if len(num1) > len(num2) else (num2, num1)
r_num1, r_num2 = list(num1)[::-1], list(num2)[::-1]
res = []
remains = 0
for i in range(len(r_num1)):
if i < len(r_num2):
tmp_val = int(r_num1[i]) + int(r_num2[i]) + remains
else:
tmp_val = int(r_num1[i]) + remains
res.append(str(tmp_val % 10))
remains = tmp_val // 10
if remains > 0:
res.append(str(remains))
return ''.join(res[::-1])
标签：tmp,lc,num2,remains,相加,415,val,str,num1 From： https://www.cnblogs.com/bjfu-vth/p/17656786.html