问两个相同或不同的分隔符之间的子字符串(当分隔符多次发生时)

EN

public static int findNth(String text, String toFind, int count) {
    int pos = -1;
    do {
        pos = text.indexOf(toFind, pos+1);
    } while(--count > 0 && pos >= 0);
    return pos;
}

int from = findNth(text, "_", 3);
int to = findNth(text, "^", 3);
String found = text.substring(from+1, to);

import java.util.Vector;

public class FindDelimitedStrings {

public static void main(String[] args) {
    String[] test = getDelimitedStrings("Ron_CR7_MU'RM'_SAF_34'", "_", "'");
    if (test != null) {
        for (int i = 0; i < test.length; i++) {
            System.out.println(" " + (i + 1) + ". |" + test[i] + "|");
        }
    }
}

public static String[] getDelimitedStrings(String source,
        String leftDelimiter, String rightDelimiter) {
    String[] answer = null;
    ;
    Vector<String> results = new Vector<String>();

    if (source == null || leftDelimiter == null || rightDelimiter == null) {
        return null;
    }

    int loc = 0;
    int begin = source.indexOf(leftDelimiter, loc);
    int end;
    while (begin > -1) {
        end = source
                .indexOf(rightDelimiter, begin + leftDelimiter.length());
        if (end > -1) {
            results.add(source.substring(begin, end));
            // loc = end + rightDelimiter.length(); if strings must be
            // returned as pairs
            loc = begin + 1;
            if (loc < source.length()) {
                begin = source.indexOf(leftDelimiter, loc);
            } else {
                begin = -1;
            }
        } else {
            begin = -1;
        }
    }

    if (results.size() > 0) {
        answer = new String[results.size()];
        results.toArray(answer);
    }
    return answer;
}
}