UVA 10327 Java运行时错误

我需要帮助解决这个名为FlipSort的UVA问题。我使用了O（nlogn）方法，使用了反转，测试用例很好。但是我不知道为什么我仍然收到

运行时错误。这是我的Java代码

import java.io.*;
import java.util.*;
import java.math.*;

class Main {

    static int flips = 0;

    public static void main(String... args) throws IOException {
        InputStreamReader isr = new InputStreamReader(System.in);
        BufferedReader in = new BufferedReader(isr);
        String line;
        while ((line = in.readLine()) != null) {
            BigInteger[] numbers = getNumbers(in.readLine());
            String ans = getAns(numbers);
            System.out.println(ans);
        }
    }

    static String getAns(BigInteger[] numbers) {
        flips = 0;
        mergeSort(numbers);
        return "Minimum exchange operations : " + flips;
    }

    static BigInteger[] mergeSort(BigInteger[] numbers) {
        if (numbers.length <= 1) return numbers;
        int n = numbers.length;
        BigInteger[] p1 = mergeSort(subArray(numbers, 0, n/2));
        BigInteger[] p2 = mergeSort(subArray(numbers, n/2, n));
        return merge(p1, p2);
    }

    static BigInteger[] merge(BigInteger[] p1, BigInteger[] p2) {
        BigInteger[] ans = new BigInteger[p1.length+p2.length];
        int i = 0, j = 0, k = 0;
        while (i < p1.length || j < p2.length) {
            if (i < p1.length && j < p2.length) {
                if (p1[i].compareTo(p2[j]) <= 0) {
                    ans[k] = p1[i];
                    i++;
                } else {
                    flips++;
                    ans[k] = p2[j];
                    j++;
                }
            } else if (i < p1.length) {
                ans[k] = p1[i];
                i++;
            } else if (j < p2.length) {
                ans[k] = p2[j];
                j++;
            }
            k++;
        }
        return ans;
    }

    static BigInteger[] subArray(BigInteger[] numbers, int start, int end) {
        BigInteger[] ans = new BigInteger[end-start];
        for (int i = start; i < end; i++)
            ans[i-start] = numbers[i];
        return ans;
    }

    static BigInteger[] getNumbers(String line) {
        String[] vals = line.split(" ");
        BigInteger[] ans = new BigInteger[vals.length];
        for (int i = 0; i < ans.length; i++)
            ans[i] = new BigInteger(vals[i]);
        return ans;
    }
}

import java.io.*；
导入java.util.*；
导入java.math.*；
班长{
静态int翻转=0；
公共静态void main（字符串…参数）引发IOException{
InputStreamReader isr=新的InputStreamReader（System.in）；
BufferedReader in=新的BufferedReader（isr）；
弦线；
而（（line=in.readLine（））！=null）{
BigInteger[]numbers=getNumbers（in.readLine（））；
字符串ans=getAns（数字）；
系统输出打印LN（ans）；
}
}
静态字符串getan（BigInteger[]数字）{
翻转=0；
合并排序（数字）；
返回“最小交换操作：”+翻转；
}
静态BigInteger[]合并排序（BigInteger[]数字）{
如果（numbers.length我读取了UVA 10327。说明表明

输入将由EOF终止

我运行了你的程序，这是我键入“EOF”时的输出

3
1 2 3
Minimum exchange operations : 0
EOF

Exception in thread "main" java.lang.NumberFormatException: Zero length BigInteger
    at java.math.BigInteger.<init>(BigInteger.java:296)
    at java.math.BigInteger.<init>(BigInteger.java:476)
    at so.UVA10327_FlipSort.getNumbers(UVA10327_FlipSort.java:73)
    at so.UVA10327_FlipSort.main(UVA10327_FlipSort.java:17)

你能发布错误吗？你的运行时错误是什么？嗨！我收到了来自UVA online judge的错误，因此我无法访问更多详细信息检查你使用可能的输入进行编码，主要是边界输入。原因可能是，你为某个特定输入停止编程。尝试找出它
public static void main(String... args) throws IOException {
    try {
        InputStreamReader isr = new InputStreamReader(System.in);
        BufferedReader in = new BufferedReader(isr);
        String line;
        while ((line = in.readLine()) != null) {
            BigInteger[] numbers = getNumbers(in.readLine());
            String ans = getAns(numbers);
            System.out.println(ans);
        }
    } catch (Throwable t) {
        // Exit gracefully...
        System.exit(0);
    }
}