public void prepare(ColumnFamilyStore cfs) {
if (tree.partitioner() instanceof RandomPartitioner) {
// You can't beat an even tree distribution for md5
tree.init();
} else {
List<DecoratedKey> keys = new ArrayList<DecoratedKey>();
for (DecoratedKey sample : cfs.keySamples(request.range)) {
assert request.range.contains(sample.token)
: "Token " + sample.token + " is not within range " + request.range;
keys.add(sample);
}
if (keys.isEmpty()) {
// use an even tree distribution
tree.init();
} else {
int numkeys = keys.size();
Random random = new Random();
// sample the column family using random keys from the index
while (true) {
DecoratedKey dk = keys.get(random.nextInt(numkeys));
if (!tree.split(dk.token)) break;
}
}
}
logger.debug("Prepared AEService tree of size " + tree.size() + " for " + request);
ranges = tree.invalids();
}
public static void main(String[] args) throws FileNotFoundException {
/* Loads the word list and stores its length */
String ext = "/afs/cats/courses/cmps109-db/cmps012a-pa1/wordList.txt";
Scanner in = new Scanner(new FileInputStream(ext));
int listSize = in.nextInt(); // length of the word list
/* Randomly selects word from the word list */
Random rand = new Random();
int n = rand.nextInt(listSize) + 1;
for (int i = 1; i < n; i++) in.next();
String word = in.next();
/* Displays to the user the number of letters in the word */
System.out.println("Your word is " + word.length() + " letters long.");
/* Recursive method that plays the game. TRUE return indicates win */
if (play(word)) {
System.out.println("You win! The word was " + word + ".");
} else { // Display for if the user loses
System.out.println("You lose. The word was " + word + ".");
}
}
public int choiceOneCard(Player self) { // 幫我看一下self用法是不是錯了
Random ran = new Random();
int cardNo = ran.nextInt(self.hand.size()); // 表示第幾張牌
int cardId = self.hand.get(cardNo); // 表示值
self.hand.remove(cardNo);
return cardId;
}
/**
* Base tick method for the level. Updates all entities, tiles, and player. Has slow repopulation
* algorithm
*/
public void tick() {
player.tick();
List<Entity> toTick = new ArrayList<Entity>();
int lr = 7;
for (int x = -lr; x < lr; x++) {
for (int y = -lr; y < lr; y++) {
Tile tile = getTile(player.x + x, player.z + y);
tile.addToTick(toTick);
tile.tick();
}
}
for (int i = 0; i < toTick.size(); i++) {
Entity e = toTick.get(i);
e.tick(this);
}
tickcount++;
if (tickcount % 1800 == 0) {
System.out.println("Adding entity to world");
if (r != null) {
int rx = r.nextInt(w);
int ry = r.nextInt(h);
if (skillNoise.noise(rx / 80d, ry / 80d) > 0.0) {
SmallMob mob = new SmallMob();
if (!tiles[rx + ry * w].blocks(mob)) {
tiles[rx + ry * w].addEntity(r.nextInt(4), mob);
}
}
}
}
}
public void testFormat() throws Exception {
localFs = FileSystem.getLocal(defaultConf);
localFs.delete(workDir, true);
Job job = new Job(new Configuration(defaultConf));
Path file = new Path(workDir, "test.txt");
int seed = new Random().nextInt();
Random random = new Random(seed);
// for a variety of lengths
for (int length = 0; length < MAX_LENGTH; length += random.nextInt(MAX_LENGTH / 10) + 1) {
// create a file with length entries
Writer writer = new OutputStreamWriter(localFs.create(file));
try {
MyClass mc = new MyClass();
for (int i = 0; i < length; i++) {
mc.s = Integer.toString(i);
mc.v = i;
byte[] raw = MessagePack.pack(mc);
byte[] b64e = base64_.encodeBase64(raw);
byte[] b64d = base64_.decode(b64e);
MyClass mc2 = MessagePack.unpack(b64d, mc.getClass());
assertEquals(mc.s, mc2.s);
assertEquals(mc.v, mc2.v);
writer.write(base64_.encodeToString(raw));
}
} finally {
writer.close();
}
checkFormat(job);
}
}
/**
* Tests offset and limit clauses for query.
*
* @throws Exception If failed.
*/
public void testOffsetLimit() throws Exception {
IgniteCache<Integer, Integer> c =
ignite(0).getOrCreateCache(cacheConfig("ints", true, Integer.class, Integer.class));
try {
List<Integer> res = new ArrayList<>();
Random rnd = new GridRandom();
for (int i = 0; i < 10; i++) {
int val = rnd.nextInt(100);
c.put(i, val);
res.add(val);
}
Collections.sort(res);
String qry = "select _val from Integer order by _val ";
assertEqualsCollections(res, columnQuery(c, qry));
assertEqualsCollections(res.subList(0, 0), columnQuery(c, qry + "limit ?", 0));
assertEqualsCollections(res.subList(0, 3), columnQuery(c, qry + "limit ?", 3));
assertEqualsCollections(res.subList(0, 9), columnQuery(c, qry + "limit ? offset ?", 9, 0));
assertEqualsCollections(res.subList(3, 7), columnQuery(c, qry + "limit ? offset ?", 4, 3));
assertEqualsCollections(res.subList(7, 9), columnQuery(c, qry + "limit ? offset ?", 2, 7));
assertEqualsCollections(res.subList(8, 10), columnQuery(c, qry + "limit ? offset ?", 2, 8));
assertEqualsCollections(res.subList(9, 10), columnQuery(c, qry + "limit ? offset ?", 1, 9));
assertEqualsCollections(res.subList(10, 10), columnQuery(c, qry + "limit ? offset ?", 1, 10));
assertEqualsCollections(
res.subList(9, 10), columnQuery(c, qry + "limit ? offset abs(-(4 + ?))", 1, 5));
} finally {
c.destroy();
}
}
static void genRandom(int cnt, int value) throws IOException {
ArrayList<Integer> ch = new ArrayList<Integer>();
ch.add(rand.nextInt(value / cnt));
for (int i = 1; i < cnt; i++) ch.add(rand.nextInt(value / cnt) + 1 + ch.get(i - 1));
crypto(ch);
print();
}
public static void golf(String file_name) {
Random rand = new Random();
ArrayList<Person> players = new ArrayList();
try {
Scanner in = new Scanner(new FileReader(file_name));
while (in.hasNextLine()) {
String name = in.nextLine();
Person person = new Person(name);
players.add(person);
}
} catch (Exception e) {
System.out.println("Could not find file");
}
while (!players.isEmpty()) {
int first, second;
do {
first = rand.nextInt(players.size());
second = rand.nextInt(players.size());
} while (first == second);
System.out.println("Team:");
System.out.println(players.get(first).name);
System.out.println(players.get(second).name);
System.out.print("\n");
players.remove(second);
if (second < first) {
players.remove(first - 1);
} else {
players.remove(first);
}
}
}
/**
* Returns the index of the piece that could be downloaded by the peer in parameter
*
* @param id The id of the peer that wants to download
* @return int The index of the piece to request
*/
private synchronized int choosePiece2Download(String id) {
synchronized (this.isComplete) {
int index = 0;
ArrayList<Integer> possible = new ArrayList<Integer>(this.nbPieces);
for (int i = 0; i < this.nbPieces; i++) {
if ((!this.isPieceRequested(i) || (this.isComplete.cardinality() > this.nbPieces - 3))
&&
// (this.isRequested.cardinality() == this.nbPieces)) &&
(!this.isPieceComplete(i))
&& this.peerAvailabilies.get(id) != null) {
if (this.peerAvailabilies.get(id).get(i)) possible.add(i);
}
}
// System.out.println(this.isRequested.cardinality()+" "+this.isComplete.cardinality()+" " +
// possible.size());
if (possible.size() > 0) {
Random r = new Random(System.currentTimeMillis());
index = possible.get(r.nextInt(possible.size()));
this.setRequested(index, true);
return (index);
}
return -1;
}
}
static StringDoubleMap test(int n, int range) {
// Generate random data
Random rand = new Random();
Set<Integer> set = new HashSet<Integer>();
for (int i = 0; i < n; i++) set.add(rand.nextInt(range));
// Make the map
StringDoubleMap map = new StringDoubleMap(0);
// map.switchToSortedList();
for (int x : set) {
map.put("" + x, 1.0 * x);
}
// System.out.println("here");
check(set, map);
map.switchToSortedList();
check(set, map);
map.switchToHashTable();
check(set, map);
map.lock();
for (int x : set) map.put("" + x, 1.0 * x);
assert set.size() == map.size();
return map;
}
public static void main(String[] args) {
Random r = new Random();
int n;
if (args.length == 1) {
n = Integer.parseInt(args[0]);
} else {
n = r.nextInt(10000) + 1;
}
try {
OutputStream ofs = new FileOutputStream("scores.txt");
ObjectOutputStream oos = new ObjectOutputStream(ofs);
for (int i = 0; i < n; ++i) {
int testNum = r.nextInt(21);
String name = randString(r.nextInt(6) + 5);
while (testNum-- > 0) {
oos.writeUTF(name);
oos.writeInt(r.nextInt(101));
}
}
ofs.close();
} catch (Exception e) {
System.out.println("Error creating scores.txt: " + e.getMessage());
}
try {
InputStream ifs = new FileInputStream("scores.txt");
String name = findStudentWithTopThreeAverageScores(ifs);
System.out.println("top student is " + name);
ifs.close();
} catch (Exception e) {
System.out.println("Error reading scores.txt: " + e.getMessage());
}
}
private void addFeed() {
if (isEnd) return;
if (isFeed) return;
feedX = Math.abs(random.nextInt()) % 400 + 10;
feedY = Math.abs(random.nextInt()) % 400 + 60;
List<Block> blockTemp = new ArrayList<>(blocks);
for (int i = 0; i < blockTemp.size(); i++)
if (blockTemp.get(i).getX() < feedX
&& blockTemp.get(i).getY() < feedY
&& blockTemp.get(i).getX() + 10 > feedX
&& blockTemp.get(i).getY() + 10 > feedY) {
feedX = Math.abs(random.nextInt()) % 400 + 10;
feedY = Math.abs(random.nextInt()) % 400 + 60;
}
feedRectangle.setX(feedX);
feedRectangle.setY(feedY);
isFeed = true;
addObstacle();
}
private Card genNewCard() {
Random rand = new Random();
Card card = new Card(rand.nextInt(52) + 1);
while (cardUsed.contains(card)) card = new Card(rand.nextInt(52) + 1);
cardUsed.add(card);
return card;
}
/**
* Gera uma partícula aleatória de dimensões fixas.
*
* <p>Define os valores para size, maxValue, dimensions, lBest e inertia.
*
* @param pagesArray array com as páginas do banco de dados
* @param size quantidade de dimensões da partícula
*/
public Particle(int[] pagesArray, int size, int inertia, Random r) throws IOException {
maxValue = pagesArray.length;
dimensions = new int[size];
velocity = new int[size];
lBest = new int[size];
this.inertia = inertia;
this.rnd = r;
for (int i = 0; i < size; i++) {
dimensions[i] = (int) (rnd.nextFloat() * pagesArray.length);
lBest[i] = (int) (rnd.nextFloat() * pagesArray.length);
// System.out.println("dimensions["+i+"] : "+dimensions[i]);
}
File f = new File("dimensions");
FileWriter fw = new FileWriter(f, true);
BufferedWriter bw = new BufferedWriter(fw);
PrintWriter pw = new PrintWriter(bw);
pw.println("pagesArray.length " + pagesArray.length);
for (int i = 0; i < dimensions.length; i++) {
pw.print(dimensions[i] + " ");
}
pw.println();
pw.close();
bw.close();
fw.close();
}
public static void createTestFiles() {
try {
System.out.println("Creating test files ... ");
Random rand = new Random();
String rootname = "f-";
long[] sizes = {0, 1, 50000000};
File testdir = new File(dirname);
FileUtil.mkdirs(testdir);
for (int i = 0; i < sizes.length; i++) {
long size = sizes[i];
File file = new File(testdir, rootname + String.valueOf(size));
System.out.println(file.getName() + "...");
FileChannel fc = new RandomAccessFile(file, "rw").getChannel();
long position = 0;
while (position < size) {
long remaining = size - position;
if (remaining > 1024000) remaining = 1024000;
byte[] buffer = new byte[new Long(remaining).intValue()];
rand.nextBytes(buffer);
ByteBuffer bb = ByteBuffer.wrap(buffer);
position += fc.write(bb);
}
fc.close();
}
System.out.println("DONE\n");
} catch (Exception e) {
Debug.printStackTrace(e);
}
}
public void attack(Character other) {
Random r = new Random();
Scanner sc = new Scanner(System.in);
int dex = dexterity;
int mult = 1;
int x = r.nextInt(6) + 1, y = r.nextInt(6) + 1, z = r.nextInt(6) + 1;
System.out.println("\nChoose your weapon:\n1 - Dagger\n2 - Short sword");
System.out.print(">");
int weapon = sc.nextInt();
if (weapon == 1) {
dex = dexterity + 3;
mult = 2;
} else if (weapon == 2) {
dex = dexterity + 1;
mult = 3;
}
System.out.println("\n" + this + " attacked!");
pause();
if (x + y + z <= dex) {
int dmg = damageDone(other, mult);
other.loseHealth(dmg);
System.out.println("\n" + name + " did " + dmg + " damage to " + other + "!");
} else {
System.out.println("\n" + name + " missed!");
}
}
private void addRegime() {
if (isEnd) return;
if (feedCounter2 - feedCounter1 != 4 || isRegime || feedCounter2 == 0) return;
feedCounter1 = feedCounter2;
currentTime = System.currentTimeMillis();
regimeX = Math.abs(random.nextInt()) % 400 + 10;
regimeY = Math.abs(random.nextInt()) % 400 + 10;
List<Block> blockTemp = new ArrayList<>(blocks);
for (int i = 0; i < blockTemp.size(); i++)
if (blockTemp.get(i).getX() < regimeX
&& blockTemp.get(i).getY() < regimeY
&& blockTemp.get(i).getX() + 10 > regimeX
&& blockTemp.get(i).getY() + 10 > regimeY) {
regimeX = Math.abs(random.nextInt()) % 400 + 10;
regimeY = Math.abs(random.nextInt()) % 400 + 10;
}
regimeRectangle.setX(regimeX);
regimeRectangle.setY(regimeY);
isRegime = true;
}
/**
* Get a path from the local FS. If size is known, we go round-robin over the set of disks (via
* the configured dirs) and return the first complete path which has enough space.
*
* <p>If size is not known, use roulette selection -- pick directories with probability
* proportional to their available space.
*/
public synchronized Path getLocalPathForWrite(
String pathStr, long size, Configuration conf, boolean checkWrite) throws IOException {
confChanged(conf);
int numDirs = localDirsPath.length;
int numDirsSearched = 0;
// remove the leading slash from the path (to make sure that the uri
// resolution results in a valid path on the dir being checked)
if (pathStr.startsWith("/")) {
pathStr = pathStr.substring(1);
}
Path returnPath = null;
Path path = new Path(pathStr);
if (size == SIZE_UNKNOWN) { // do roulette selection: pick dir with probability
// proportional to available size
long[] availableOnDisk = new long[dirDF.length];
long totalAvailable = 0;
// build the "roulette wheel"
for (int i = 0; i < dirDF.length; ++i) {
availableOnDisk[i] = dirDF[i].getAvailable();
totalAvailable += availableOnDisk[i];
}
// Keep rolling the wheel till we get a valid path
Random r = new java.util.Random();
while (numDirsSearched < numDirs && returnPath == null) {
long randomPosition = Math.abs(r.nextLong()) % totalAvailable;
int dir = 0;
while (randomPosition > availableOnDisk[dir]) {
randomPosition -= availableOnDisk[dir];
dir++;
}
dirNumLastAccessed = dir;
returnPath = createPath(path, checkWrite);
if (returnPath == null) {
totalAvailable -= availableOnDisk[dir];
availableOnDisk[dir] = 0; // skip this disk
numDirsSearched++;
}
}
} else {
while (numDirsSearched < numDirs && returnPath == null) {
long capacity = dirDF[dirNumLastAccessed].getAvailable();
if (capacity > size) {
returnPath = createPath(path, checkWrite);
}
dirNumLastAccessed++;
dirNumLastAccessed = dirNumLastAccessed % numDirs;
numDirsSearched++;
}
}
if (returnPath != null) {
return returnPath;
}
// no path found
throw new DiskErrorException("Could not find any valid local " + "directory for " + pathStr);
}
public Object call() throws Exception {
_barrier.await(); // barrier, to force racing start
for (long j = 0; j < _count; j++)
_map.put(
j + _offset,
new TestKey(_rand.nextLong(), _rand.nextInt(), (short) _rand.nextInt(Short.MAX_VALUE)));
return null;
}
private static String randString(int len) {
Random r = new Random();
StringBuilder ret = new StringBuilder(len);
while (len-- > 0) {
ret.append((char) (r.nextInt(26) + 'A'));
}
return ret.toString();
}
public static void shuffleArray(long[] a) {
int n = a.length;
Random random = new Random();
random.nextInt();
for (int i = 0; i < n; i++) {
int change = i + random.nextInt(n - i);
swap(a, i, change);
}
}
public static String createRandomHexNumber(int length) {
Random random = new Random(System.currentTimeMillis());
char[] result = new char[length];
for (int i = 0; i < length; i++) {
int r = random.nextInt(16);
result[i] = Integer.toHexString(r).charAt(0);
}
return new String(result);
}
static void genNo(int cnt, int value) throws IOException {
ArrayList<Integer> ch = new ArrayList<Integer>();
for (int i = 0; i < cnt - 1; i++) ch.add(rand.nextInt(value) + 1);
ch.add(ch.get(rand.nextInt(cnt - 1)));
Collections.sort(ch);
crypto(ch);
print();
}
static void genRandom3(int cnt, int len) throws IOException {
for (int i = 0; i < cnt; i++) {
String t = "";
int sz = 1 + rand.nextInt(len);
for (int j = 0; j < sz; j++) t += (char) ('a' + rand.nextInt(10));
data.add(t);
}
print();
}
private int getRand(int min, int max) {
Date now = new Date();
long seed = now.getTime();
Random randomizer = new Random(seed);
int n = max - min + 1;
int i = randomizer.nextInt(n);
if (i < 0) i = -i;
return min + i;
}
public void npcDied(Player p, int npcID, int abSX, int abSY) {
Random rand = new Random();
try {
BufferedReader in = new BufferedReader(new FileReader("./data/npcs/npcdrops.cfg"));
String input;
int on = 0;
String[] splitEQL;
String[] splitCOM;
String[] splitDSH;
String[] splitCLN;
String[] splitSCL;
while ((input = in.readLine()) != null) {
splitEQL = null;
splitEQL = null;
splitDSH = null;
splitCLN = null;
splitSCL = null;
if (!input.startsWith("/")
&& input.contains("=")
&& input.contains(",")
&& input.contains("-")
&& input.contains(":")) {
try {
splitEQL = input.split("=");
if (Integer.parseInt(splitEQL[0]) == npcID) {
splitSCL = splitEQL[1].split(";");
int Wealth = 0;
for (int i = Wealth; i < splitSCL.length; i++) {
splitCOM = splitSCL[i].split(",");
splitDSH = splitCOM[1].split("-");
splitCLN = splitCOM[2].split(":");
int item = Integer.parseInt(splitCOM[0]);
int min = Integer.parseInt(splitDSH[0]);
int max = Integer.parseInt(splitDSH[1]);
int chance = Integer.parseInt(splitCLN[0]);
int outOf = Integer.parseInt(splitCLN[1]);
int amount = rand.nextInt((max - min) + 1) + min;
int ifDrop = rand.nextInt(outOf) + 1;
if (ifDrop <= chance && npccanloot == true) {
Engine.items.createGroundItem(item, amount, abSX, abSY, heightLevel, p.username);
npccanloot = false;
}
}
}
} catch (Exception e) {
System.out.println("Exception dropping item:\n" + e);
}
++on;
}
}
in.close();
} catch (IOException e) {
System.out.println(e);
}
}
private int getRandomGame(int num) {
int ranGame;
Random randomNum = new Random();
ranGame = randomNum.nextInt(num) + 1;
while (!gameRecord.containsKey(ranGame)) {
ranGame = randomNum.nextInt(num) + 1;
}
return ranGame;
}
public static void main(String[] args) throws Exception {
String graphName = args[0];
int nShards = Integer.parseInt(args[1]);
CircleOfTrustSalsa csalsa = new CircleOfTrustSalsa(new VertexQuery(graphName, nShards), 10000);
VertexIdTranslate vertexTrans =
VertexIdTranslate.fromFile(
new File(ChiFilenames.getVertexTranslateDefFile(graphName, nShards)));
BufferedReader cmdIn = new BufferedReader(new InputStreamReader(System.in));
while (true) {
System.out.print("Enter vertex id to query >> :: ");
String ln = cmdIn.readLine();
int vertex = Integer.parseInt(ln);
// Circle of trust is just the vertex's followers for now
HashSet<Integer> circle = csalsa.queryService.queryOutNeighbors(vertexTrans.forward(vertex));
int maxCircleSize = 300;
// max 500
if (circle.size() > maxCircleSize) {
int[] all = new int[circle.size()];
int i = 0;
for (Integer v : circle) all[i++] = v;
HashSet<Integer> filteredCircle = new HashSet<Integer>();
Random r = new Random(260379);
for (i = 0; i < maxCircleSize; i++)
filteredCircle.add(all[Math.abs(r.nextInt()) % all.length]);
circle = filteredCircle;
}
csalsa.initializeGraph(circle);
long t = System.currentTimeMillis();
csalsa.computeSALSA(3);
logger.info("SALSA computation took " + (System.currentTimeMillis() - t) + "ms");
circle.add(vertexTrans.forward(vertex));
ArrayList<SalsaVertex> top = csalsa.topAuthorities(20, circle);
int j = 1;
for (SalsaVertex sv : top) {
int originalId = vertexTrans.backward(sv.id);
logger.info(
"Top "
+ (j++)
+ " = "
+ originalId
+ " "
+ csalsa.namify(originalId)
+ " ("
+ sv.value
+ ")");
}
}
}
public void testNaNValues() throws ClassNotFoundException, IOException {
testWriteAndRead(
new ComplexClass(
rand.nextInt(),
rand.nextLong(),
"hello",
rand.nextBoolean(),
Double.NaN,
rand.nextFloat()));
}
int selectCycle() {
if (t < N) {
return generator.nextInt(5);
} else {
if (Rtmp > alpha) {
currentPath = previousPath;
} else currentPath = generator.nextInt(5);
}
return currentPath;
}