versionCompare.java

import com.sun.xml.internal.fastinfoset.util.CharArray;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Test3 {

    public static List<String> split(String s) {
        List<String> res = new ArrayList<>();
        int i = 0;
        while (i < s.length()) {
            StringBuilder numbuf = new StringBuilder();
            while (Character.isDigit(s.charAt(i))) {
                numbuf.append(s.charAt(i));
                i++;
                if (i >= s.length()) break;
            }
            res.add(numbuf.toString());
            if (i >= s.length()) break;
            StringBuilder strbuf = new StringBuilder();
            while (!Character.isDigit(s.charAt(i))) {
                strbuf.append(s.charAt(i));
                i++;
                if (i >= s.length()) break;
            }
            res.add(strbuf.toString());
        }
        System.out.println(Arrays.toString(res.toArray()));
        return res;
    }

    public static int compareList(List<String> a, List<String> b) {
        int i = 0;
        while (i < a.size() && i < b.size()) {
            String as = a.get(i);
            String bs = b.get(i);
            try {
                int ia = Integer.parseInt(as);
                int ib = Integer.parseInt(bs);
                if (ia > ib) return 1;
                if (ia < ib) return -1;
                i++;
            } catch (NumberFormatException e) {
                if (as.compareTo(bs) > 0) return 1;
                if (as.compareTo(bs) < 0) return -1;
                i++;
            }
        }
        return 0;
    }

    public static int compare(String a, String b) {
        return compareList(split(a), split(b));
    }

    public static void main(String[] args) {
        String a = "v1.33.m5";
        String b = "v1.10.m4";
        System.out.println(compare(a, b));
    }
}