import java.util.regex.Pattern;
import java.util.regex.Matcher;
 
 
class Main
{
  public static void main (String[] args) throws java.lang.Exception
  {
	Pattern p = Pattern.compile("(?:\\.[1-9]+|(?=\\.))(\\.?0\\d*)");
 
	String[] strs = {"180.570123", "180.570", "180.0123", "180.0", "180123", "180"};
 
	for (String s : strs) {
		Matcher m = p.matcher(s);
		System.out.printf("%-12s: Match: %s%n", s,
			m.find() ? m.group(1) : "n/a");
	}
  }
}

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