public class Order {
    public static String order(String words) {

        if (words.isEmpty()) {
            return words;
        }

        String[] splittedWords = words.split(" ");
        String[] outputTab = new String[splittedWords.length];

        for (int i = 0; i < splittedWords.length; i++) {
            String word = splittedWords[i];
            for (int j = 0; j < word.length(); j++) {
                char c = word.charAt(j);
                if (c > 47 && c < 58) {
                    int index = Character.getNumericValue(c);
                    outputTab[index - 1] = word;
                }
            }
        }

        String combinedString = "";
        for (String s : outputTab) {
            combinedString += s + " ";
        }

        return combinedString;
    }
}