public class SwapWords {
    static Map<Integer, String> idxToSymbolMap = new HashMap<>();

    private enum Type {MAX, MIN}

    public static void main(String[] args) {
        String text = "London is the capital of Great Britain, but Kiev of Ukraineasd.";
        String[] words = text.split(" ");
        String maxLength = getWord(words, Type.MAX);
        String minLength = getWord(words, Type.MIN);
        int idxOfMax = getWordIndex(words, maxLength);
        int idxOfMin = getWordIndex(words, minLength);
        words[idxOfMax] = minLength;
        words[idxOfMin] = maxLength;
        addBackSymbols(words);
        System.out.println(Strings.join(words, " "));
    }


    public static String getWord(String[] array, Type type) {
        deleteSymbols(array);
        Comparator<String> cByLength = Comparator.comparing(String::length);
        return type == Type.MAX
            ? Arrays.stream(array).max(cByLength).orElse("")
            : Arrays.stream(array).min(cByLength).orElse("");
    }

    public static int getWordIndex(String[] array, String word) {
        int idx = 0;
        deleteSymbols(array);
        for (int i = 0; i < array.length; i++) {
            if (array[i].equals(word)) {
                idx = i;
            }
        }
        return idx;
    }

    private static void deleteSymbols(String[] array) {
        for (int i = 0; i < array.length; i++) {
            if (array[i].contains(".")) {
                array[i] = array[i].replace(".", "");
                idxToSymbolMap.put(i, ".");
            } else if (array[i].contains("?")) {
                array[i] = array[i].replace("?", "");
                idxToSymbolMap.put(i, "?");
            } else if (array[i].contains("!")) {
                array[i] = array[i].replace("!", "");
                idxToSymbolMap.put(i, "!");
            } else if (array[i].contains(",")) {
                array[i] = array[i].replace(",", "");
                idxToSymbolMap.put(i, ",");
            }
        }
    }

    private static void addBackSymbols(String[] words) {
        for (int i = 0; i < words.length; i++) {
            int idx = i;
            idxToSymbolMap.forEach((key, value) -> {
                if (key == idx) {
                    words[idx] = words[idx] + value;
                }
            });
        }
    }
}