如何在Java中对具有字符串，整数和字母数字的集合进行排序

如何在Java中对具有字符串，整数和字母数字的集合进行排序

//捕鱼技术

List<String> values = new ArrayList<String>();    values.add("AB");    values.add("A012B");    values.add("CD");    values.add("1");    values.add("10");    values.add("01");    values.add("9");    values.add("I");    Collections.sort(values, new Comparator<String>() {        @Override        public int compare(String o1, String o2) { // TODO tweak the comparator here  try{ Integer integer1 = Integer.valueOf(o1); Integer integer2 = Integer.valueOf(o2); return integer1.compareTo(integer2); }catch (java.lang.NumberFormatException e) {     return o1.compareTo(o2); }        }    });    System.out.println(values);}

//不够？？？

//这是鱼

public static void main(String[] args) throws Exception {    List<String> values = new ArrayList<String>();    values.add("AB");    values.add("A012B");    values.add("CD");    values.add("1");    values.add("10");    values.add("01");    values.add("9");    int maxLen = 0;    for (String string : values) {        if (string.length() > maxLen) { maxLen = string.length();        }    }    Collections.sort(values, new MyComparator(maxLen));    System.out.println(values);}public static class MyComparator implements Comparator<String> {    private int maxLen;    private static final String REGEX = "[0-9]+";    public MyComparator(int maxLen) {        this.maxLen = maxLen;    }    @Override    public int compare(String obj1, String obj2) {        String o1 = obj1;        String o2 = obj2;        // both numbers        if (o1.matches("[1-9]+") && o2.matches("[1-9]+")) { Integer integer1 = Integer.valueOf(o1); Integer integer2 = Integer.valueOf(o2); return integer1.compareTo(integer2);        }        // both string        if (o1.matches("[a-zA-Z]+") && o2.matches("[a-zA-Z]+")) { return o1.compareTo(o2);        }        Pattern p = Pattern.compile(REGEX);        Matcher m1 = p.matcher(o1);        Matcher m2 = p.matcher(o2);        List<String> list = new ArrayList<String>();        while (m1.find()) { list.add(m1.group());        }        for (String string : list) { o1.replaceFirst(string, leftPad(string, "0", maxLen));        }        list.clear();        while (m2.find()) { list.add(m2.group());        }        for (String string : list) { o2.replaceFirst(string, leftPad(string, "0", maxLen));        }        return o1.compareTo(o2);    }}public static String leftPad(String stringToPad, String padder, Integer size) {    final StringBuilder strb = new StringBuilder(size.intValue());    final StringCharacterIterator sci = new StringCharacterIterator(padder);    while (strb.length() < (size.intValue() - stringToPad.length())) {        for (char ch = sci.first(); ch != CharacterIterator.DONE; ch = sci.next()) { if (strb.length() < (size.intValue() - stringToPad.length())) {     strb.insert(strb.length(), String.valueOf(ch)); }        }    }    return strb.append(stringToPad).toString();}