Example usage for org.apache.commons.math3.random RandomGenerator nextInt

Introduction

In this page you can find the example usage for org.apache.commons.math3.random RandomGenerator nextInt.

Prototype

int nextInt();

Source Link

Document

Returns the next pseudorandom, uniformly distributed int value from this random number generator's sequence.

Usage

From source file:com.fpuna.preproceso.TestApacheMathLibDemo.java

/**
 * @param args//from ww w .j  a  va2 s . c  o  m
 */
public static void main(String[] args) {

    RandomGenerator randomGenerator = new JDKRandomGenerator();
    System.out.println(randomGenerator.nextInt());
    System.out.println(randomGenerator.nextDouble());

    /**
     * Descriptive Statistics like MEAN,GP,SD,MAX
    *
     */
    DescriptiveStatistics stats = new DescriptiveStatistics();
    stats.addValue(1);
    stats.addValue(2);
    stats.addValue(3);
    stats.addValue(4);
    stats.addValue(5);
    stats.addValue(6);
    stats.addValue(7);
    System.out.print("Mean : " + stats.getMean() + "\n");
    System.out.print("Standard deviation : " + stats.getStandardDeviation() + "\n");
    System.out.print("Max : " + stats.getMax() + "\n");

    /**
     * Complex number format a+bi
    *
     */
    Complex c1 = new Complex(1, 2);
    Complex c2 = new Complex(2, 3);
    System.out.print("Absolute of c1 " + c1.abs() + "\n");
    System.out.print("Addition : " + (c1.add(c2)) + "\n");
}

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From source file:com.github.rinde.rinsim.core.model.rand.RandomModelTest.java

static void testUnmodifiable(RandomGenerator rng) {
    boolean fail = false;
    try {//from www  .  ja v a 2 s.  com
        rng.setSeed(0);
    } catch (final UnsupportedOperationException e) {
        fail = true;
    }
    assertTrue(fail);
    fail = false;
    try {
        rng.setSeed(new int[] { 0 });
    } catch (final UnsupportedOperationException e) {
        fail = true;
    }
    assertTrue(fail);
    fail = false;
    try {
        rng.setSeed(123L);
    } catch (final UnsupportedOperationException e) {
        fail = true;
    }
    assertTrue(fail);
    fail = false;

    rng.nextBoolean();
    rng.nextBytes(new byte[] {});
    rng.nextDouble();
    rng.nextFloat();
    rng.nextGaussian();
    rng.nextInt();
    rng.nextInt(1);
    rng.nextLong();
}

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From source file:com.cloudera.oryx.common.random.RandomManagerTest.java

@Test
public void testRandomState() {
    // Really, a test that the random generator state is reset in tests
    RandomGenerator generator = RandomManager.getRandom();
    assertEquals(1553355631, generator.nextInt());
    assertNotEquals(1553355631, generator.nextInt());
}

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From source file:io.fabric8.example.calculator.msg.RequestReplyTest.java

@Test
public void theTest() throws Exception {

    PooledConnectionFactory connectionFactory = new PooledConnectionFactory();
    connectionFactory.setConnectionFactory(new ActiveMQConnectionFactory("failover:(tcp://localhost:61616)"));

    final AtomicInteger counter = new AtomicInteger();
    CamelContext serviceContext = new DefaultCamelContext();
    serviceContext.addComponent("jms", JmsComponent.jmsComponentAutoAcknowledge(connectionFactory));

    serviceContext.addRoutes(new RouteBuilder() {
        @Override//from   ww w . jav a 2s.  c  o  m
        public void configure() throws Exception {
            RandomGenerator rg = new JDKRandomGenerator();
            int num = rg.nextInt();
            from("jms:myQueue.queue")
                    // .setHeader("JMSMessageID", constant("ID : " + num))
                    //  .setHeader("JMSReplyTo", constant("myQueue.queue"))
                    .process(new Processor() {
                        @Override
                        public void process(Exchange exchange) throws Exception {
                            String body = exchange.getIn().getBody(String.class);
                            /***
                             * Process data and get the response and set the resposen to the Exchage
                             * body.
                             */
                            exchange.getOut().setBody("RESPONSE " + counter.incrementAndGet());
                        }
                    });
        }
    });
    serviceContext.start();

    CamelContext requestorContext = new DefaultCamelContext();
    requestorContext.addComponent("jms", ActiveMQComponent.jmsComponentAutoAcknowledge(connectionFactory));

    requestorContext.start();

    ProducerTemplate producerTemplate = requestorContext.createProducerTemplate();
    for (int i = 0; i < 1000; i++) {
        Object response = producerTemplate
                .requestBodyAndHeader(
                        "jms:myQueue.queue?exchangePattern=InOut&requestTimeout=40000&timeToLive=40000"
                                + "&asyncConsumer=true&asyncStartListener=true&concurrentConsumers=10"
                                + "&useMessageIDAsCorrelationID=true",
                        "mBodyMsg", "HeaderString", "HeaderValue");

        System.err.println("RESPONSE = " + response);
    }

    requestorContext.stop();
    serviceContext.stop();
}

---

From source file:io.fabric8.example.test.msg.TestMsg.java

protected void doTest() throws Exception {

    //String msgURI = "tcp://" + getEnv("FABRIC8MQ_SERVICE_HOST", "localhost") + ":" + getEnv("FABRIC8MQ_SERVICE_PORT", "61616");
    String msgURI = Variables.MSG_URL;
    System.err.println("CONNECTING TO " + msgURI);
    PooledConnectionFactory connectionFactory = new PooledConnectionFactory();
    connectionFactory.setConnectionFactory(new ActiveMQConnectionFactory("failover:(" + msgURI + ")"));

    final AtomicInteger counter = new AtomicInteger();
    final CamelContext serviceContext = new DefaultCamelContext();
    serviceContext.addComponent("jms", JmsComponent.jmsComponentAutoAcknowledge(connectionFactory));

    serviceContext.addRoutes(new RouteBuilder() {
        @Override//  w w w .  j  av  a 2  s . c om
        public void configure() throws Exception {
            RandomGenerator rg = new JDKRandomGenerator();
            int num = rg.nextInt();
            from("jms:topic:test").process(new Producer("FOO", serviceContext.createProducerTemplate()));

            from("jms:topic:test").process(new Producer("BAR", serviceContext.createProducerTemplate()));

            /*
            from("jms:queue:myQueue").process(new Processor() {
            @Override
            public void process(Exchange exchange) throws Exception {
                System.err.println("GOT A REPLY(" + exchange.getIn().getBody() + "!!! " + exchange.getIn().getHeaders());
            }
            });
            */

            from("jms:queue:myQueue").aggregate(header("CORRELATE"), new AggregationStrategy() {
                @Override
                public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
                    if (oldExchange == null) {
                        return newExchange;
                    }

                    String oldBody = oldExchange.getIn().getBody(String.class);
                    String newBody = newExchange.getIn().getBody(String.class);
                    oldExchange.getIn().setBody(oldBody + "+" + newBody);
                    return oldExchange;
                }
            }).completionSize(2).completionTimeout(2000).process(new Processor() {
                @Override
                public void process(Exchange exchange) throws Exception {
                    System.err.println("YAY GOT RESULT " + exchange.getIn().getBody());
                }
            });
        }
    });
    serviceContext.start();

    CamelContext requestorContext = new DefaultCamelContext();
    requestorContext.addComponent("jms", ActiveMQComponent.jmsComponentAutoAcknowledge(connectionFactory));

    requestorContext.start();

    ProducerTemplate producerTemplate = requestorContext.createProducerTemplate();
    for (int i = 0; i < 1000; i++) {
        /*
        Object response = producerTemplate
                          .requestBodyAndHeader(
                                                   "jms:myQueue.queue?exchangePattern=InOut&requestTimeout=40000&timeToLive=40000"
                                                       + "&asyncConsumer=true&asyncStartListener=true&concurrentConsumers=10"
                                                       + "&useMessageIDAsCorrelationID=true",
                                                   "mBodyMsg", "HeaderString", "HeaderValue");
                
        System.err.println("RESPONSE = " + response);
        */
        String body = "TEST " + i;
        System.err.println("SENT MESSAGE " + body);
        String endPoint = "jms:topic:test?preserveMessageQos=true&replyTo=myQueue&replyToType=Exclusive"
                + "&asyncConsumer=true&asyncStartListener=true&concurrentConsumers=10";
        producerTemplate.sendBody(endPoint, body);
        Thread.sleep(1000);
    }

    requestorContext.stop();
    serviceContext.stop();
}

---

From source file:cc.redberry.groovy.feyncalc.pairedchi.ParallelExpandTest.java

@Test
public void tes2() throws Exception {

    RandomGenerator rw = new Well1024a(new SecureRandom().nextInt());
    for (int i = 0; i < 100; ++i) {
        int seed = rw.nextInt();
        System.out.println(i + "  " + seed);
        CC.resetTensorNames(seed);//from w ww. j  a  v  a2 s . co m

        setAntiSymmetric("e_abcd");
        //            setAntiSymmetric("D_ac");
        //            setAntiSymmetric("B_abc");
        //            setAntiSymmetric("A_abc");

        RandomTensor rnd = new RandomTensor(false);
        rnd.reset(seed);

        rnd.addToNamespace(parse("F_a"));
        rnd.addToNamespace(parse("A_ab"));
        rnd.addToNamespace(parse("B_abc"));
        rnd.addToNamespace(parse("D_ac"));
        rnd.addToNamespace(parse("g_ac"));
        rnd.addToNamespace(parse("e_abcd"));

        Sum t1 = (Sum) rnd.nextSum(100, 8, IndicesFactory.EMPTY_INDICES);
        Sum t2 = (Sum) rnd.nextSum(100, 8, IndicesFactory.EMPTY_INDICES);
        t1 = (Sum) parseExpression("e_abcd*e_pqrs = 0").transform(t1);
        t2 = (Sum) parseExpression("e_abcd*e_pqrs = 0").transform(t2);
        System.out.println(t1.size() + "  " + t2.size());
        Transformation tr = new TransformationCollection(EliminateMetricsTransformation.ELIMINATE_METRICS,
                Tensors.parseExpression("A_ab*B^bac = T^c"), Tensors.parseExpression("A_ab*A^ba = xx"),
                Tensors.parseExpression("D_ab*D^ba = yy"),
                EliminateDueSymmetriesTransformation.ELIMINATE_DUE_SYMMETRIES,
                new LeviCivitaSimplifyTransformation(parseSimple("e_abcd"), true),
                ExpandAndEliminateTransformation.EXPAND_AND_ELIMINATE,
                Tensors.parseExpression("A_ab*B^bac = T^c"), Tensors.parseExpression("A_ab*A^ba = xx"),
                Tensors.parseExpression("D_ab*D^ba = yy"), Tensors.parseExpression("d^a_a = 4"));
        t2 = (Sum) ApplyIndexMapping.renameDummy(t2, TensorUtils.getAllIndicesNamesT(t1).toArray());

        Tensor r1 = new ExpandTransformation(tr).transform(multiplyAndRenameConflictingDummies(t1, t2));
        Tensor r3 = new ParallelExpand(t1, t2, 4, tr, null).expand();

        Assert.assertTrue(TensorUtils.isZero(tr.transform(subtract(r1, r3))));
    }
}

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From source file:com.trickl.math.lanczos.LanczosSolver.java

private Pair<Double, Double> makeFirstStep(RandomGenerator randomGenerator) {
    double a, b;//from  w w  w  .  j  a  v  a  2s  .c o m

    startvector.assign(value -> randomGenerator.nextInt() & (-1L >>> 32));
    double startvectorMag = norm2(startvector);
    startvector.assign(Mult.div(startvectorMag));
    matrix.zMult(startvector, vec2);
    a = startvector.zDotProduct(vec2);
    vec2.assign(startvector, PlusMult.minusMult(a));
    b = norm2(vec2);
    vec2.assign(Mult.div(b));
    return new Pair(a, b);
}

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From source file:com.milaboratory.primitivio.PrimitivIOTest.java

@Test
public void testJsonSerializer1() throws Exception {
    RandomGenerator rg = new Well19937c();
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    PrimitivO po = new PrimitivO(bos);
    TestJsonClass1[] objs = new TestJsonClass1[100];
    for (int i = 0; i < objs.length; i++)
        objs[i] = new TestJsonClass1(rg.nextInt(), "Rand" + rg.nextInt());

    int cc = 10;/*www  .j av  a2 s . co m*/
    for (int i = 0; i < cc; ++i)
        po.writeObject(objs);

    ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
    PrimitivI pi = new PrimitivI(bis);
    for (int i = 0; i < cc; ++i)
        Assert.assertArrayEquals(objs, pi.readObject(TestJsonClass1[].class));
}

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From source file:edu.oregonstate.eecs.mcplan.search.UTreeSearch.java

public static EvaluationFunction<ChainWalk.State, ChainWalk.Action> getChainWalkEvaluator(
        final RandomGenerator rng, final ChainWalk.ActionGen action_gen) {
    final int rollout_width = 1;
    final int rollout_depth = Integer.MAX_VALUE;
    final Policy<ChainWalk.State, JointAction<ChainWalk.Action>> rollout_policy = new RandomPolicy<ChainWalk.State, JointAction<ChainWalk.Action>>(
            0 /*Player*/, rng.nextInt(), SingleAgentJointActionGenerator.create(action_gen));
    final EvaluationFunction<ChainWalk.State, ChainWalk.Action> heuristic = new EvaluationFunction<ChainWalk.State, ChainWalk.Action>() {
        @Override//  w w w.  j av a 2s . c om
        public double[] evaluate(final Simulator<ChainWalk.State, ChainWalk.Action> sim) {
            return new double[] { 0.0 };
        }
    };
    final double discount = 1.0;
    final EvaluationFunction<ChainWalk.State, ChainWalk.Action> rollout_evaluator = RolloutEvaluator
            .create(rollout_policy, discount, rollout_width, rollout_depth, heuristic);
    return rollout_evaluator;
}

---

From source file:edu.oregonstate.eecs.mcplan.search.UTreeSearch.java

public static EvaluationFunction<FuelWorldState, FuelWorldAction> getFuelWorldEvaluator(
        final RandomGenerator rng, final FuelWorldActionGenerator action_gen) {
    final int rollout_width = 1;
    final int rollout_depth = Integer.MAX_VALUE;
    final Policy<FuelWorldState, JointAction<FuelWorldAction>> rollout_policy = new RandomPolicy<FuelWorldState, JointAction<FuelWorldAction>>(
            0 /*Player*/, rng.nextInt(), SingleAgentJointActionGenerator.create(action_gen));
    final EvaluationFunction<FuelWorldState, FuelWorldAction> heuristic = new EvaluationFunction<FuelWorldState, FuelWorldAction>() {
        @Override/*from ww w .ja v a 2s.c o m*/
        public double[] evaluate(final Simulator<FuelWorldState, FuelWorldAction> sim) {
            return new double[] { 0.0 };
        }
    };
    final double discount = 1.0;
    final EvaluationFunction<FuelWorldState, FuelWorldAction> rollout_evaluator = RolloutEvaluator
            .create(rollout_policy, discount, rollout_width, rollout_depth, heuristic);
    return rollout_evaluator;
}

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