= Java =

== Regular expressions ==
{{{#!Java
/*
javac TesteRe.java 
java -cp . TesteRe 
*/
import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class TesteRe{

    public static void main(String args[]){ 
        String values[]={"aa12.txt","a123sss.txt","bs11bb.txt","123aaaa.sql","a12.txt","aaaa12","20ghj","6657"};
        Pattern a = Pattern.compile("^(\\D+)(\\d+)(\\D+)$");
        Pattern b = Pattern.compile("^(\\d+)(\\D+)$");
        Pattern c = Pattern.compile("^(\\D+)(\\d+)$");
        Pattern d = Pattern.compile("^(\\d+)$");

        for(String item:values){
            Matcher ma = a.matcher(item);
            Matcher mb = b.matcher(item);
            Matcher mc = c.matcher(item);
            Matcher md = d.matcher(item);

           if(ma.matches()){ 
               int val = Integer.parseInt(ma.group(2)) + 1;
               System.out.println(String.format("A: mv %s %s%d%s",item,ma.group(1),val,ma.group(3)  ) );
           }

           if(mb.matches()){ 
               int val = Integer.parseInt(mb.group(1)) + 1;
               System.out.println(String.format("B: mv %s %d%s",item, val , mb.group(2)  ) );
           }

           if(mc.matches()){ 
               int val = Integer.parseInt(mc.group(2)) + 1;
               System.out.println(String.format("C: mv %s %s%d",item,mc.group(1),val   ) );
           }

           if(md.matches()){ 
               int val = Integer.parseInt(md.group(1)) + 1;
               System.out.println(String.format("D: mv %s %d",item, val  ) );
           }

        }
    }
}

}}}