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我一直在互联网上寻求帮助，但我找不到它，所以我正在求助于发布。

我有一个格式如下的txt文件

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

我需要阅读这些单独的分数中的每一个，并将分子和分母输入一个名为 BigFraction(num, denom) 的函数中。

我调用阅读器并将其作为字符串输出。然后我拆分空格以获取单个分数，因为字符串将它们输入我的辅助方法 strToBF，该方法在正斜杠上拆分并输入分子和分母。

但它不起作用，任何帮助将不胜感激

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);             
            }
        }
4

1 回答 1

1

This

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

cannot split "1/2"

try

String[] strSplit = str.split("/");
于 2013-05-04T05:49:58.413 回答