Examples of Random

ca.eandb.jmist.framework.Random
A random number generator. @author Brad Kimmel
com.asakusafw.compiler.flow.testing.operator.ExOperatorFactory.Random
com.killruana.zcraft.random.Random
Tirer un nombre aléatoire @author killruana
com.rapidminer.utils.Random
Copyright (C) 2010 Steffen Rendle, Zeno Gantner Copyright (C) 2011 Zeno Gantner This file is originally part of MyMediaLite. Ported by Matej Mihelcic (Ru�er Bo�kovi� Institute) 25.07.2011
com.securityinnovation.jNeo.Random

This is the PRNG for jNeo. It is based on the X9.82 DRBG algorithm "Hash Function DRBG Using Any Approved Hash Function (Hash_DRBG)" using SHA-256 as the underlying hash.
This implementation uses the following value for t:
0xcf, 0x83, 0xe1, 0x35, 0x7e, 0xef, 0xb8, 0xbd, 0xf1, 0x54,
0x28, 0x50, 0xd6, 0x6d, 0x80, 0x07, 0xd6, 0x20, 0xe4, 0x05,
0x0b, 0x57, 0x15, 0xdc, 0x83, 0xf4, 0xa9, 0x21, 0xd3, 0x6c,
0xe9, 0xce, 0x47, 0xd0, 0xd1, 0x3c, 0x5d, 0x85, 0xf2, 0xb0,
0xff, 0x83, 0x18, 0xd2, 0x87, 0x7e, 0xec, 0x2f, 0x63, 0xb9,
0x31, 0xbd, 0x47, 0x41, 0x7a, 0x81, 0xa5, 0x38, 0x32, 0x7a,
0xf9, 0x27, 0xda, 0x3e
This implementation does not enforce the seed length requirements specified in the X9.82 documentation, but in all cases the seed must be non-null.
com.sun.faban.driver.util.Random
RandNum is a random number/value generator. This is a primitive facility for RandomValues. RandomValues and all subclasses generate application-specific random values. @author Shanti Subramanyam
com.twitter.common.util.Random
java.util.Random
An instance of this class is used to generate a stream of pseudorandom numbers. The class uses a 48-bit seed, which is modified using a linear congruential formula. (See Donald Knuth, The Art of Computer Programming, Volume 3, Section 3.2.1.)
If two instances of {@code Random} are created with the sameseed, and the same sequence of method calls is made for each, they will generate and return identical sequences of numbers. In order to guarantee this property, particular algorithms are specified for the class {@code Random}. Java implementations must use all the algorithms shown here for the class {@code Random}, for the sake of absolute portability of Java code. However, subclasses of class {@code Random}are permitted to use other algorithms, so long as they adhere to the general contracts for all the methods.
The algorithms implemented by class {@code Random} use a{@code protected} utility method that on each invocation can supplyup to 32 pseudorandomly generated bits.
Many applications will find the method {@link Math#random} simpler to use. @author Frank Yellin @version 1.47, 02/07/06 @since 1.0
mikera.util.Random
org.apache.sshd.common.Random
A pseudo random number generator. @author Apache MINA SSHD Project
org.hornetq.utils.Random
A Random @author Tim FoxCreated 28 Nov 2008 10:28:28
org.jboss.aerogear.crypto.Random
Provides a cryptographically strong RNG
org.jruby.util.Random
org.vngx.jsch.algorithm.Random
.ietf.org/html/rfc4251#section-9.1">RFC 4251 - The Secure Shell (SSH) Protocol Architecture: Pseudo-Random Number Generation
RFC 4086 - Randomness Requirements for Security
Note: Implementations may not be thread-safe and should be externally synchronized.

Note: Instances should be created using the {@code AlgorithmManager} factory.
@see org.vngx.jsch.algorithm.AlgorithmManager @author Michael Laudati
weka.core.Debug.Random

Examples of java.util.Random

        // 9 hours per day
        settings.setTimeslotsPerDay(9);


        ncpInstance = new NoCollisionPrinciple();
        ncpInstance.setCondition(new AlgorithmConditionIteration(10000));
        ncpInstance.setRandom(new Random(123456L));
        ncpInstance.setDataPoolSettings(settings);
        ncpInstance.setStatusBar(new SilentConsoleStatusBar());
    }

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Examples of java.util.Random

        settings.setNumberOfDays(5);
        // 9 hours per day
        settings.setTimeslotsPerDay(9);


        NoCollisionPrinciple ncpInstance = new NoCollisionPrinciple();
        ncpInstance.setRandom(new Random(seed));//123456L
        ncpInstance.setCondition(new AlgorithmConditionTime(seconds));
        ncpInstance.setDataPoolSettings(settings);
        ncpInstance.setStatusBar(new SilentConsoleStatusBar());
        ncpInstance.setDataPool(dataPool);

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Examples of java.util.Random

        ImportBTXml.overwriteSettings(settings);
        importer.setDataPoolSettings(settings);        
        importer.doWork();


        NoCollisionPrinciple ncpInstance = new NoCollisionPrinciple();
        ncpInstance.setRandom(new Random(123456L));
        ncpInstance.setCondition(new AlgorithmConditionIteration(5));
        ncpInstance.setDataPoolSettings(settings);
        ncpInstance.setStatusBar(new SilentConsoleStatusBar());
        ncpInstance.setDataPool(dataPool);

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Examples of java.util.Random

            }
        }
        printTimeMemory("select", System.currentTimeMillis() - time);


        // select randomized
        Random random = new Random(1);
        time = System.currentTimeMillis();
        prep = conn.prepareStatement("SELECT * FROM TEST WHERE ID = ?");
        for (int i = 0; i < len; i++) {
            prep.setInt(1, random.nextInt(len));
            ResultSet rs = prep.executeQuery();
            rs.next();
            assertFalse(rs.next());
            if (i % 50000 == 0) {
                trace("  " + (100 * i / len) + "%");
            }
        }
        printTimeMemory("select randomized", System.currentTimeMillis() - time);


        // delete
        time = System.currentTimeMillis();
        prep = conn.prepareStatement("DELETE FROM TEST WHERE ID = ?");
        for (int i = 0; i < len; i++) {
            prep.setInt(1, random.nextInt(len));
            prep.executeUpdate();
            if (i % 50000 == 0) {
                trace("  " + (100 * i / len) + "%");
            }
        }

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Examples of java.util.Random

public String title, company, location, description;
public Calendar post_date;
public boolean visible;


public static Iterator jobs() {
    Random rand = new Random();
    ArrayList jobs = new ArrayList();
    for (int i = 0; i < NUM_JOBS; ++i)
  jobs.add(new Job(rand, i));
    return jobs.iterator();
}

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Examples of java.util.Random

        conn.setAutoCommit(false);
        int[] count = new int[2];
        int[] countCommitted = new int[2];
        int[] countSave = new int[2];
        int len = getSize(2000, 10000);
        Random random = new Random(10);
        Savepoint sp = null;
        for (int i = 0; i < len; i++) {
            int tableId = random.nextInt(2);
            String table = "TEST" + tableId;
            int op = random.nextInt(6);
            switch (op) {
            case 0:
                stat.execute("INSERT INTO " + table + "(NAME) VALUES('op" + i + "')");
                count[tableId]++;
                break;

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Examples of java.util.Random

        BitField field = new BitField();
        set.set(0, 640);
        field.set(0, 640, true);
        assertEquals(set.nextClearBit(0), field.nextClearBit(0));


        Random random = new Random(1);
        field = new BitField();
        field.set(0, 500, true);
        for (int i = 0; i < 100000; i++) {
            int a = random.nextInt(120);
            int b = a + 1 + random.nextInt(200);
            field.clear(a);
            field.clear(b);
            assertEquals(b, field.nextClearBit(a + 1));
            field.set(a);
            field.set(b);

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Examples of java.util.Random

        testSetFast(used, true);
    }


    private void testSetFast(BitField used, boolean init) {
        int len = 10000;
        Random random = new Random(1);
        for (int i = 0, x = 0; i < len / 8; i++) {
            int mask = random.nextInt() & 255;
            if (init) {
                assertEquals(mask, used.getByte(x));
                x += 8;
                // for (int j = 0; j < 8; j++, x++) {
                // if (used.get(x) != ((mask & (1 << j)) != 0)) {

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Examples of java.util.Random

    private void testRandom() {
        BitField bits = new BitField();
        BitSet set = new BitSet();
        int max = 300;
        int count = 100000;
        Random random = new Random(1);
        for (int i = 0; i < count; i++) {
            int idx = random.nextInt(max);
            if (random.nextBoolean()) {
                if (random.nextBoolean()) {
                    bits.set(idx);
                    set.set(idx);
                } else {
                    bits.clear(idx);
                    set.clear(idx);

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Examples of java.util.Random

    }


    private void testRandomSetRange() {
        BitField bits = new BitField();
        BitSet set = new BitSet();
        Random random = new Random(1);
        int maxOffset = 500;
        int maxLen = 500;
        int total = maxOffset + maxLen;
        int count = 10000;
        for (int i = 0; i < count; i++) {
            int offset = random.nextInt(maxOffset);
            int len = random.nextInt(maxLen);
            boolean val = random.nextBoolean();
            set.set(offset, offset + len, val);
            bits.set(offset, offset + len, val);
            for (int j = 0; j < total; j++) {
                assertEquals(set.get(j), bits.get(j));
            }

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