问题描述
Calculate a+b and output the sum in standard format – that is, the digits must be separated into groups of three by commas (unless there are less than four digits).
Input Specification:
Each input file contains one test case. Each case contains a pair of integers a and b where −10^6 ≤ a, b≤10^6. The numbers are separated by a space.
Output Specification:
For each test case, you should output the sum of a and b in one line. The sum must be written in the standard format.
Sample Input:
-1000000 9
Sample Output:
-999,991
思路分析及代码实现
这道题的答题意思就是给你两个数,让你先求出这两个数之和,然后如果得到的结果每三个数一组,中间用逗号隔开,如果得到的结果是负数,则将负号放在第一组里
def solve(a, b):
sum = a + b
sum = list(str(sum))
num = 0
if sum[0] == '-':
print('-', end='')
sum = sum[1:len(sum)]
n = len(sum)
for i in range(len(sum)):
print(sum[i],end='')
num += 1
if num % 3 == 0 and i != n - 1:
print(',', end='')
num = 0
else:
n = len(sum)
for i in range(len(sum)):
print(sum[i],end='')
num += 1
if num % 3 == 0 and i != n - 1:
print(',', end='')
num = 0
solve(-1000000, 9)