如何读取和删除字符串中的数字？

Question

因此，例如，我有以下字符串：

0no1no2yes3yes4yes

这里的第一个0应该被删除并使用数组索引。 我这样做是通过以下声明：

string = string.replaceFirst(dataLine.substring(0, 1), "");

但是，当我说这个字符串时：

10yes11no12yes13yes14no

我的代码失败，因为我想处理10但是我的代码仅提取1 。

因此，在某种程度上，个位数可以正常工作，但是两位或三位数会导致IndexOutOfBound错误。

这是代码： http : //pastebin.com/uspYp1FK

这是一些示例数据： http : //pastebin.com/kTQx5WrJ

这是示例数据的输出：

Enter filename: test.txt
Data before cleanUp: {"assignmentID":"2CCYEPLSP75KTVG8PTFALQES19DXRA","workerID":"AGMJL8K9OMU64","start":1359575990087,"end":"","elapsedTime":"","itemIndex":0,"responses":[{"jokeIndex":0,"response":"no"},{"jokeIndex":1,"response":"no"},{"jokeIndex":2,"response":"yes"},{"jokeIndex":3,"response":"yes"},{"jokeIndex":4,"response":"yes"}],"mturk":"yes"},
Data after cleanUp: 0no1no2yes3yes4yes
Data before cleanUp: {"assignmentID":"2118D8J3VE7W013Z4273QCKAGJOYID","workerID":"A2P0GYVEKGM8HF","start":1359576154789,"end":"","elapsedTime":"","itemIndex":3,"responses":[{"jokeIndex":15,"response":"no"},{"jokeIndex":16,"response":"no"},{"jokeIndex":17,"response":"no"},{"jokeIndex":18,"response":"no"},{"jokeIndex":19,"response":"no"}],"mturk":"yes"},
Data after cleanUp: 15no16no17no18no19no
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 2
    at java.lang.String.substring(String.java:1907)
    at jokes.main(jokes.java:34)

基本上，该代码应该执行的操作是将数据分成字符串，如上所示，然后读取该数字，如果后面跟有yes增加dataYes索引的值，或者如果之后no增加dataNo值。 说得通？

我能做什么？ 如何使我的代码更灵活？

Answer 1

对你起作用吗？

string = string.replaceAll("^\\d+","");

Answer 2

怎么样： -

String regex = "^\\d+";
String myStr = "10abc11def";

Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(myStr);

if(m.find())
{
    String digits = m.group();
    myStr = m.replaceFirst("");
}

Answer 3

尝试这个

    System.out.println("10yes11no12yes13yes14no".replaceFirst("^\\d+",""));

Answer 4

另一种更具体的尝试：-

    String regex = "^(\\d+)(yes|no)";
    String myStr = "10yes11no";

    Pattern p = Pattern.compile(regex);
    Matcher m = p.matcher(myStr);

    while (m.find())
    {
        String all = m.group();
        String digits = m.group(1);
        String bool = m.group(2);

        // do not try and combine the next 2 lines ... it doesn't work!
        myStr = myStr.substring(all.length());
        m.reset(myStr);

        System.out.println(String.format("all = %s, digits = %s, bool = %s", all, digits, bool));
    }