是否 for left bigint desc accep 以及 next sed

A+B for Input-Output Practice (III)

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 113961 Accepted Submission(s): 60127

Problem Description Your task is to Calculate a + b.

Input Input contains multiple test cases. Each test case contains a pair of integers a and b, one pair of integers per line. A test case containing 0 0 terminates the input and this test case is not to be processed.

Output For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.

Sample Input 1 5 10 20 0 0

Sample Output 6 30

Author lcy

值得註意的是怎麽判斷一個大數是否等於一個數，以及怎麽把一個數轉化為大數形式，註意大數實質上就是字符串

import java.math.BigInteger;
 
import java.util.Scanner;
public class Main//註意刷題時的java格式
{
    public static void main(String[] args)
    { 
        BigInteger a,b,d;
        String c = "0";
        d = new BigInteger(c);//將c轉化為大數形式，用d保存
        Scanner in = new Scanner(System.in);
        while(in.hasNextBigInteger())
        {
            a 
 
= in.nextBigInteger();
            b = in.nextBigInteger();
            if(a.compareTo(d) == 0 && b.compareTo(d) == 0 )//註意用一個大數類自帶方法來判斷兩個大數是否相等
                break;
            System.out.println(a.add(b));
        }
    }
}

java hdu A+B for Input-Output Practice (III)