Question

我一直在网上寻求帮助，但是我找不到它，所以我要求发布。

我有一个格式如下的txt文件

1/2 0 1/6 6/11 1/6 2/10

我需要读取每个单独的分数，并在名为BigFraction（num，denom）的函数中输入分子和分母。

我打电话给读者并将其作为字符串输出。然后我在空白上拆分，将各个分数作为字符串将它们输入我的帮助方法strToBF，它在前进中分裂并输入分子和分母。

但它不起作用，我们将非常感谢任何帮助

我的主要方法

            String file = fileToString(fileName);
    file.replaceAll("(.*)\\/(.*)", "a");
    String[] splitFile = file.split(" ");

    BigFraction conditionA = stringToBF(splitFile[0]);
    BigFraction c1A = stringToBF(splitFile[1]);
    BigFraction c2A = stringToBF(splitFile[2]);
    ConditionalTwoCoinChannel CTCCA = new ConditionalTwoCoinChannel(conditionA, new TwoCoinChannel(c1A, c2A));

    BigFraction conditionB = stringToBF(splitFile[3]);
    BigFraction c1B = stringToBF(splitFile[4]);
    BigFraction c2B = stringToBF(splitFile[5]);
    ConditionalTwoCoinChannel CTCCB = new ConditionalTwoCoinChannel(conditionB, new TwoCoinChannel(c1B, c2B));

    List<ConditionalTwoCoinChannel> outputList = new ArrayList<ConditionalTwoCoinChannel>();

    outputList.add(CTCCA);
    outputList.add(CTCCB);

    return outputList;

和我的两个辅助方法

private static String fileToString(String file)
        throws FileNotFoundException, IOException {

        BufferedReader fileReader = new BufferedReader(new FileReader(file));
        StringBuilder sBuilder = new StringBuilder();
        String fileLine = fileReader.readLine();

        try {
            while (fileLine != null) {
                sBuilder.append(fileLine);
                sBuilder.append(" ");
                fileLine = fileReader.readLine();
            }
        } catch (FileNotFoundException e1) {
            throw new RuntimeException("file not found");
        } catch (IOException e2) {
            throw new RuntimeException("Input Error");
        }
        finally {
            fileReader.close();
        }


        return sBuilder.toString();




private static BigFraction stringToBF(String str){

            if (strToInt(str) == 0) {
                return BigFraction.ZERO;
            }
            else {
                String[] strSplit = str.split("(.*)a(.*)");
                int numerator = strToInt(strSplit[0]);
                int denominator = strToInt(strSplit[1]);
                return new BigFraction(numerator, denominator);             
            }
        }

Answer 1

此

String[] strSplit = str.split("(.*)a(.*)");

无法拆分“1/2”

试

String[] strSplit = str.split("/");

读取文本文件java中的分数

1 个答案: