7-2-Java-基本语法-大整数相加

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题目

有若干大整数，需要对其进行求和操作。

输入格式

每行输入一个字符串代表一个大整数，连续输入若干行，当某行字符为e或E时退出。

输入样例:

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42846280183517070527831839425882145521227251250327
55121603546981200581762165212827652751691296897789
e

输出样例:

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97967883730498271109594004638709798272918548148116

JavaScript

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const readline = require('readline')
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
})

let sum = BigInt(0)

rl.on('line', line => {
    if (!line.localeCompare("e", undefined, { sensitivity: "base" })) {
        console.log(sum.toString())
        rl.close()
    } else {
        sum += BigInt(line)
    }
})

Java

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import java.util.Scanner;
import java.math.BigInteger;

public class Main {
    public static void main (String[] args) {
        Scanner scanner = new Scanner(System.in);
        BigInteger sum = BigInteger.ZERO;

        while (scanner.hasNextLine()) {
            String line = scanner.nextLine();
            if (line.equalsIgnoreCase("e")) {
                System.out.println(sum.toString());
                break;
            } else {
                sum = sum.add(new BigInteger(line));
            }
        }
        scanner.close();
    }
}