[PAT] 1001 A+B Format （20 分）Java

1001 A+B Format （20 分）

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


代码示例：

import java.util.Scanner;
/**
 * @Auther: Xingzheng Wang
 * @Date: 2019/1/17 10:06
 * @Description: pattest
 * @Version: 1.0
 */
public class PAT1001 {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        System.out.printf("%,d",a+b);
    }
}