Example usage for java.util Collections shuffle

List of usage examples for java.util Collections shuffle

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Introduction

In this page you can find the example usage for java.util Collections shuffle.

Prototype

public static void shuffle(List<?> list)

Source Link

Document

Randomly permutes the specified list using a default source of randomness.

Usage

From source file:android.math.practice.MainFragment.java

private void loadRows() {
    List<Movie> list = MovieList.setupMovies();

    mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
    CardPresenter cardPresenter = new CardPresenter();

    int i;/*from   w  w  w. j a  v  a  2s .  c  o  m*/
    for (i = 0; i < NUM_ROWS; i++) {
        if (i != 0) {
            Collections.shuffle(list);
        }
        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter);
        for (int j = 0; j < NUM_COLS; j++) {
            listRowAdapter.add(list.get(j % 5));
        }
        HeaderItem header = new HeaderItem(i, MovieList.MOVIE_CATEGORY[i]);
        mRowsAdapter.add(new ListRow(header, listRowAdapter));
    }

    HeaderItem gridHeader = new HeaderItem(i, "PREFERENCES");

    GridItemPresenter mGridPresenter = new GridItemPresenter();
    ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
    gridRowAdapter.add(getResources().getString(R.string.grid_view));
    gridRowAdapter.add(getString(R.string.error_fragment));
    gridRowAdapter.add(getResources().getString(R.string.personal_settings));
    mRowsAdapter.add(new ListRow(gridHeader, gridRowAdapter));

    setAdapter(mRowsAdapter);

}

From source file:com.amazon.lab.usbphotoviewer.MainFragment.java

private void loadRows() {
    List<Movie> list = MovieList.setupMovies();

    mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
    CardPresenter cardPresenter = new CardPresenter();

    int i;//from ww w  . j  a v a2  s  .c  o  m
    for (i = 0; i < NUM_ROWS; i++) {
        if (i != 0) {
            Collections.shuffle(list);
        }
        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter);
        for (int j = 0; j < list.size(); j++) {
            if ((i == 0 && !list.get(j).isUhd()) || (i == 1 && list.get(j).isUhd()))
                listRowAdapter.add(list.get(j));
        }
        HeaderItem header = new HeaderItem(i, MovieList.MOVIE_CATEGORY[i]);
        mRowsAdapter.add(new ListRow(header, listRowAdapter));
    }

    HeaderItem gridHeader = new HeaderItem(i, "PREFERENCES");

    GridItemPresenter mGridPresenter = new GridItemPresenter();
    ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
    gridRowAdapter.add(getResources().getString(R.string.grid_view));
    gridRowAdapter.add(getString(R.string.error_fragment));
    gridRowAdapter.add(getResources().getString(R.string.personal_settings));
    //mRowsAdapter.add(new ListRow(gridHeader, gridRowAdapter));

    setAdapter(mRowsAdapter);

}

From source file:com.example.android.AudioArchive.model.MusicProvider.java

/**
 * Get an iterator over a shuffled collection of all songs
 *//* w  w  w .j a va 2  s . c o  m*/
public Iterable<MediaMetadataCompat> getShuffledMusic() {
    if (mCurrentState != State.INITIALIZED) {
        return Collections.emptyList();
    }
    List<MediaMetadataCompat> shuffled = new ArrayList<>(mMusicListById.size());
    for (MutableMediaMetadata mutableMetadata : mMusicListById.values()) {
        shuffled.add(mutableMetadata.metadata);
    }
    Collections.shuffle(shuffled);
    return shuffled;
}

From source file:com.android.tv.leanback.MainFragment.java

private void loadRows() {
    List<Movie> list = MovieList.setupMovies();

    mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
    CardPresenter cardPresenter = new CardPresenter();

    int i;//from ww  w. j  a v  a2s  . c  o  m
    for (i = 0; i < NUM_ROWS; i++) {
        if (i != 0) {
            Collections.shuffle(list);
        }
        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter);
        for (int j = 0; j < NUM_COLS; j++) {
            listRowAdapter.add(list.get(j % 5));
        }
        HeaderItem header = new HeaderItem(i, MovieList.MOVIE_CATEGORY[i]);
        mRowsAdapter.add(new ListRow(header, listRowAdapter));
    }

    HeaderItem gridHeader = new HeaderItem(i, "");

    GridItemPresenter mGridPresenter = new GridItemPresenter();
    ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
    gridRowAdapter.add(getResources().getString(R.string.grid_view));
    gridRowAdapter.add(getString(R.string.error_fragment));
    gridRowAdapter.add(getResources().getString(R.string.personal_settings));

    myView = new MyTestView(getActivity().getBaseContext());
    /*myView.setText("dsdsds");
    gridRowAdapter.add(myView);*/
    mRowsAdapter.add(new ListRow(gridHeader, gridRowAdapter));

    setAdapter(mRowsAdapter);

}

From source file:org.jboss.examples.camel.MessageResequencerTest.java

@Test(timeout = 30000L)
public void testUnorderedMessages() throws Exception {
    List<Integer> unorderedMessages = new ArrayList<>();
    for (int i = 0; i < 10; ++i) {
        unorderedMessages.add(i);/*from w  w  w  .  j  a va2s  .c  o m*/
    }
    Collections.shuffle(unorderedMessages);
    for (Integer message : unorderedMessages) {
        log.info(String.format("Sending message #%s...", message));
        activemq.sendBodyAndHeader(message, "MyGroupingID", 1);
    }
    mock.expectedMessageCount(10);
    mock.expectsAscending().simple("${body}");
    mock.await(30, TimeUnit.SECONDS);
    mock.assertIsSatisfied();
}

From source file:com.github.lukaszbudnik.gugis.GugisReplicatorInterceptor.java

@Override
public Object invoke(MethodInvocation i) throws Throwable {
    if (log.isDebugEnabled()) {
        log.debug(//from   ww w .  j  a  v a 2s  .  com
                "Method " + i.getMethod() + " is called on " + i.getThis() + " with args " + i.getArguments());
    }

    Propagate propagate = i.getMethod().getDeclaredAnnotation(Propagate.class);
    Class clazz = i.getMethod().getDeclaringClass().getInterfaces()[0];

    if (log.isDebugEnabled()) {
        log.debug("About to find bindings for " + clazz);
        log.debug("Propagation set to " + propagate.propagation());
        log.debug("Allow failure set to " + propagate.allowFailure());
    }

    List<Binding<Object>> bindings = injector.findBindingsByType(TypeLiteral.get(clazz));

    if (bindings.size() == 0) {
        log.error("No bindings found for " + clazz);
        throw new GugisException("No bindings found for " + clazz);
    }

    if (log.isDebugEnabled()) {
        log.debug("Found " + bindings.size() + " bindings for " + clazz);
    }

    Stream<Try<Object>> resultStream = Stream.empty();
    switch (propagate.propagation()) {
    case FASTEST: {
        Stream<Try<Object>> executedStream = executeBindings(propagate.allowFailure(), bindings.stream(),
                i.getMethod().getName(), i.getArguments());
        Optional<Try<Object>> anyResult = executedStream.filter(t -> t.isSuccess()).findAny();
        resultStream = anyResult.isPresent() ? Stream.of(anyResult.get()) : Stream.<Try<Object>>empty();
        break;
    }
    case PRIMARY: {
        Stream<Binding<Object>> filtered = bindings.stream()
                .filter(b -> b.getProvider().get().getClass().isAnnotationPresent(Primary.class));
        resultStream = executeBindings(propagate.allowFailure(), filtered, i.getMethod().getName(),
                i.getArguments());
        break;
    }
    case SECONDARY: {
        Stream<Binding<Object>> filtered = bindings.stream()
                .filter(b -> b.getProvider().get().getClass().isAnnotationPresent(Secondary.class));
        resultStream = executeBindings(propagate.allowFailure(), filtered, i.getMethod().getName(),
                i.getArguments());
        break;
    }
    case RANDOM: {
        ArrayList<Binding<Object>> modifiableBindings = new ArrayList<>(bindings);
        Collections.shuffle(modifiableBindings);
        for (Binding<Object> binding : modifiableBindings) {
            Stream<Try<Object>> executedStream = executeBindings(propagate.allowFailure(), Stream.of(binding),
                    i.getMethod().getName(), i.getArguments());
            Optional<Try<Object>> anyResult = executedStream.filter(t -> t.isSuccess()).findFirst();
            if (anyResult.isPresent()) {
                resultStream = Stream.of(anyResult.get());
                break;
            }
        }
        break;
    }
    default: {
        // handles ALL
        Stream<Binding<Object>> bindingStream = bindings.stream();
        resultStream = executeBindings(propagate.allowFailure(), bindingStream, i.getMethod().getName(),
                i.getArguments());
        break;
    }
    }

    List<Try<Object>> tries = resultStream.collect(Collectors.toList());

    List<Try<Object>> successes = tries.stream().filter(t -> t.isSuccess()).collect(Collectors.toList());

    if (successes.size() == 0) {
        String errorMessage = ErrorMessageBuilder
                .buildErrorMessageFromTries("No result for " + propagate.propagation() + " found for "
                        + clazz.getCanonicalName() + "." + i.getMethod().getName(), tries);
        throw new GugisException(errorMessage);
    }

    // all implementations should be homogeneous and should return same value for same arguments
    Try<Object> tryObject = successes.get(0);

    if (log.isDebugEnabled()) {
        log.debug("Method " + i.getMethod() + " returns " + tryObject.get());
    }

    return tryObject.get();
}

From source file:com.hackday.andy.jztv.MainFragment.java

private void loadRows() {
    List<Movie> list = MovieList.setupMovies();

    // ListRowPresenter ?? 
    mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());

    CardPresenter cardPresenter = new CardPresenter();

    int i;//from  w  ww . j av  a2 s .com
    for (i = 0; i < NUM_ROWS; i++) {
        if (i != 0) {
            Collections.shuffle(list);
        }
        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter);
        for (int j = 0; j < NUM_COLS; j++) {
            // 5/row
            listRowAdapter.add(list.get(j % 5));
        }

        HeaderItem header = new HeaderItem(i, MovieList.MOVIE_CATEGORY[i]);
        mRowsAdapter.add(new ListRow(header, listRowAdapter));
    }

    HeaderItem gridHeader = new HeaderItem(i, "PREFERENCES");

    GridItemPresenter mGridPresenter = new GridItemPresenter();
    ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
    gridRowAdapter.add(getResources().getString(R.string.grid_view));
    gridRowAdapter.add(getString(R.string.error_fragment));
    gridRowAdapter.add(getResources().getString(R.string.personal_settings));
    mRowsAdapter.add(new ListRow(gridHeader, gridRowAdapter));

    // browser fragmentadapter
    setAdapter(mRowsAdapter);

}

From source file:com.publicuhc.uhcaddons.teammanager.commands.RandomTeamsCommand.java

@CommandMethod("randomteams")
@PermissionRestriction(RANDOM_TEAMS_PERMISSION)
@CommandOptions("n")
public void onRandomTeams(OptionSet set, CommandSender sender, Integer amount) {
    if (amount < 1) {
        translate.sendMessage("greater than zero", sender);
        return;//  w w w. j av  a 2 s  . c  o m
    }

    List<Player> players = Lists.newArrayList(Bukkit.getOnlinePlayers());

    Collections.shuffle(players);

    Iterator<Player> playerIterator = players.iterator();
    while (playerIterator.hasNext()) {
        if (scoreboard.getPlayerTeam(playerIterator.next()) != null) {
            playerIterator.remove();
        }
    }

    if (amount <= players.size()) {
        translate.sendMessage("not enough players online", sender, players.size());
        return;
    }

    List<List<Player>> splitup = split(players, amount);

    for (List<Player> teamGroup : splitup) {
        Team newTeam = manager.getNewTeam(true);

        Collection<String> playerNames = Lists.newArrayList();

        for (OfflinePlayer p : teamGroup) {
            playerNames.add(p.getName());
        }

        for (Player p : teamGroup) {
            newTeam.addPlayer(p);
        }

        manager.sendToTeamTranslated(newTeam, "your team", Joiner.on(",").join(playerNames));
    }

    translate.sendMessage("created", sender, splitup.size());
}

From source file:com.appdevper.mediaplayer.util.QueueHelper.java

/**
 * Create a random queue.//from w ww  .j av  a  2s.co m
 *
 * @param musicProvider the provider used for fetching music.
 * @return list containing {@link MediaSession.QueueItem}'s
 */
public static List<MediaSessionCompat.QueueItem> getRandomQueue(MusicProvider musicProvider) {
    List<MediaMetadataCompat> result = new ArrayList<>();

    for (String genre : musicProvider.getGenres()) {
        Iterable<MediaMetadataCompat> tracks = musicProvider.getMusicsByGenre(genre);
        for (MediaMetadataCompat track : tracks) {
            if (ThreadLocalRandom.current().nextBoolean()) {
                result.add(track);
            }
        }
    }
    LogHelper.d(TAG, "getRandomQueue: result.size=", result.size());

    Collections.shuffle(result);

    return convertToQueue(result, MediaIDHelper.MEDIA_ID_MUSICS_BY_SEARCH, "random");
}

From source file:com.ancho.tv.MainFragment.java

private void loadRows() {
    List<Movie> list = MovieList.setupMovies();

    mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
    CardPresenter cardPresenter = new CardPresenter();

    int i;/*from w  w  w . j  a v  a2s  .  c o m*/
    for (i = 0; i < NUM_ROWS; i++) {
        if (i != 0) {
            Collections.shuffle(list);
        }
        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter);
        for (int j = 0; j < NUM_COLS; j++) {
            listRowAdapter.add(list.get(j % 5));
        }
        HeaderItem header = new HeaderItem(i, MovieList.MOVIE_CATEGORY[i]);
        mRowsAdapter.add(new ListRow(header, listRowAdapter));
    }

    HeaderItem gridHeader = new HeaderItem(i, "PREFERENCES");

    GridItemPresenter mGridPresenter = new GridItemPresenter();
    ArrayObjectAdapter gridRowAdapter = new ArrayObjectAdapter(mGridPresenter);
    gridRowAdapter.add(getResources().getString(R.string.grid_view));
    gridRowAdapter.add(getString(R.string.error_fragment));
    gridRowAdapter.add(getResources().getString(R.string.personal_settings));
    mRowsAdapter.add(new ListRow(gridHeader, gridRowAdapter));
    //        mRowsAdapter.replace();

    setAdapter(mRowsAdapter);

}