CODEWITHSUNDEEP
java
marek
marek

Reputation: 29

Sorting map alphabetical

Removing brackets from list of anagrams

Hello, i have been asked to create new question insted of asking again in the same thread. 

public static void main(String[] args) throws IOException {
    getAnagrams(new InputStreamReader(new URL("http://www.puzzlers.org/pub/wordlists/unixdict.txt").openStream(),
            StandardCharsets.UTF_8)).forEach(items -> {
                for (String item : items) {
                    System.out.print(item + " ");
                }
                System.out.println();
            });
}
private static String canonicalize(String string) {

    return Stream.of(string.split("")).sorted().collect(Collectors.joining());
}

public static List<Set<String>> getAnagrams(Reader rr) {
Map<String, Set<String>> mapa = (Map<String, Set<String>>) new BufferedReader(rr).lines()
                                 .flatMap(Pattern.compile("\\W+")::splitAsStream)
                                 .collect(Collectors.groupingBy(Main::canonicalize, Collectors.toSet()));
    return mapa.values().stream().filter(lista -> lista.size() > 4).collect(Collectors.toList());
}

}

How do i sort my output like "evil levi live veil vile"? Cuz for now i have "veil evil vile levi live"

UPDATE Last thing is to sort output alphabeticaly

For now = "evil levi live veil vile, abel able bale bela elba"

Needed = "abel able bale bela elba, evil levi live veil vile"

Upvotes: 0

Views: 92

Answers (1)

Leo Aso
Leo Aso

Reputation: 12513

Here's the easiest way I can think of

return mapa.values().stream()
    .filter(lista -> lista.size() > 4)
    .map(set -> new TreeSet<>(set))
    .collect(Collectors.toList());

TreeSet keeps its elements sorted.

Upvotes: 2

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