Example usage for java.lang Math floor

Introduction

In this page you can find the example usage for java.lang Math floor.

Prototype

public static double floor(double a) 

Source Link

Document

Returns the largest (closest to positive infinity) double value that is less than or equal to the argument and is equal to a mathematical integer.

Usage

From source file:Main.java

public static void main(String[] args) {

    System.out.println(Math.floor(31.1));

}

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From source file:Main.java

public static void main(String[] args) {

    System.out.println(Math.floor(70));
    System.out.println(Math.floor(31.1));
    System.out.println(Math.floor(12.5));
    System.out.println(Math.floor(-10));
    System.out.println(Math.floor(-12.4));
    System.out.println(Math.floor(0));

}

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From source file:MainClass.java

public static void main(String args[]) {
    System.out.println("The floor of 45.7 is " + Math.floor(45.7));
}

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From source file:Main.java

public static void main(String[] args) {

    double x = 123456.7;
    double y = -123.45;

    // call floor and print the result
    System.out.println("Math.floor(" + x + ")=" + Math.floor(x));
    System.out.println("Math.floor(" + y + ")=" + Math.floor(y));
    System.out.println("Math.floor(0)=" + Math.floor(0));

}

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From source file:Main.java

public static void main(String[] args) {
    ArrayList<String> list = new ArrayList<>();
    list.add("A");
    list.add("B");
    list.add("C");
    list.add("D");
    list.add("E");
    list.add("F");
    list.add("G");
    list.add("H");

    System.out.println(list);//from  w ww  . j a  v  a  2 s  .c  om

    while (!list.isEmpty()) {
        long index = Math.round(Math.floor(Math.random() * list.size()));
        System.out.println("Name " + list.get((int) index));
        list.remove((int) index);
    }

}

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From source file:RandNum.java

public static void main(String[] args) {
    int num;/*from   ww w.j av  a2 s.  c o m*/
    int[] dist = new int[10]; // Storage for distribution

    // Generate 10000 random numbers using Math.random()
    for (int x = 0; x < 10000; x++) {
        num = (int) (Math.floor(Math.random() * 10));
        dist[num]++;
    }
    // Display distribution of random integers in the range
    // 0 to 9
    System.out.println("Distribution using Math.random() ");
    for (int k = 0; k < 10; k++)
        System.out.print(k + "\t");
    // Display results
    for (int y = 0; y < 10; y++) {
        System.out.print(dist[y] + "\t");
    }
    System.out.println();
}

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From source file:MainCLass.java

public static void main(String[] args) {
    double x = 2.4;
    double y = 9.5;
    double z = -1.3;

    System.out.println("round(x) = " + Math.round(x));
    System.out.println("round(y) = " + Math.round(y));
    System.out.println("round(z) = " + Math.round(z));
    System.out.println();/*from w  ww. j  a v  a2s  .c o m*/
    System.out.println("ceil(x) = " + Math.ceil(x));
    System.out.println("ceil(y) = " + Math.ceil(y));
    System.out.println("ceil(z) = " + Math.ceil(z));
    System.out.println();
    System.out.println("floor(x) = " + Math.floor(x));
    System.out.println("floor(y) = " + Math.floor(y));
    System.out.println("floor(z) = " + Math.floor(z));
    System.out.println();
    System.out.println("rint(x) = " + Math.rint(x));
    System.out.println("rint(y) = " + Math.rint(y));
    System.out.println("rint(z) = " + Math.rint(z));
}

---

From source file:MainClass.java

public static void main(String args[]) {
    System.out.printf("Math.abs( 23.7 ) = %f\n", Math.abs(23.7));
    System.out.printf("Math.abs( 0.0 ) = %f\n", Math.abs(0.0));
    System.out.printf("Math.abs( -23.7 ) = %f\n", Math.abs(-23.7));
    System.out.printf("Math.ceil( 9.2 ) = %f\n", Math.ceil(9.2));
    System.out.printf("Math.ceil( -9.8 ) = %f\n", Math.ceil(-9.8));
    System.out.printf("Math.cos( 0.0 ) = %f\n", Math.cos(0.0));
    System.out.printf("Math.exp( 1.0 ) = %f\n", Math.exp(1.0));
    System.out.printf("Math.exp( 2.0 ) = %f\n", Math.exp(2.0));
    System.out.printf("Math.floor( 9.2 ) = %f\n", Math.floor(9.2));
    System.out.printf("Math.floor( -9.8 ) = %f\n", Math.floor(-9.8));
    System.out.printf("Math.log( Math.E ) = %f\n", Math.log(Math.E));
    System.out.printf("Math.log( Math.E * Math.E ) = %f\n", Math.log(Math.E * Math.E));
    System.out.printf("Math.max( 2.3, 12.7 ) = %f\n", Math.max(2.3, 12.7));
    System.out.printf("Math.max( -2.3, -12.7 ) = %f\n", Math.max(-2.3, -12.7));
    System.out.printf("Math.min( 2.3, 12.7 ) = %f\n", Math.min(2.3, 12.7));
    System.out.printf("Math.min( -2.3, -12.7 ) = %f\n", Math.min(-2.3, -12.7));
    System.out.printf("Math.pow( 2.0, 7.0 ) = %f\n", Math.pow(2.0, 7.0));
    System.out.printf("Math.pow( 9.0, 0.5 ) = %f\n", Math.pow(9.0, 0.5));
    System.out.printf("Math.sin( 0.0 ) = %f\n", Math.sin(0.0));
    System.out.printf("Math.sqrt( 900.0 ) = %f\n", Math.sqrt(900.0));
    System.out.printf("Math.sqrt( 9.0 ) = %f\n", Math.sqrt(9.0));
    System.out.printf("Math.tan( 0.0 ) = %f\n", Math.tan(0.0));
}

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From source file:BasicMathDemo.java

public static void main(String[] args) {
    double aNumber = -191.635;

    System.out.println("The absolute value of " + aNumber + " is " + Math.abs(aNumber));
    System.out.println("The ceiling of " + aNumber + " is " + Math.ceil(aNumber));
    System.out.println("The floor of " + aNumber + " is " + Math.floor(aNumber));
    System.out.println("The rint of " + aNumber + " is " + Math.rint(aNumber));
}

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From source file:com.mapr.PurchaseLog.java

public static void main(String[] args) throws IOException {
    Options opts = new Options();
    CmdLineParser parser = new CmdLineParser(opts);
    try {/*from  w w w  .jav  a 2  s . co  m*/
        parser.parseArgument(args);
    } catch (CmdLineException e) {
        System.err.println("Usage: -count <number>G|M|K [ -users number ]  log-file user-profiles");
        return;
    }

    Joiner withTab = Joiner.on("\t");

    // first generate lots of user definitions
    SchemaSampler users = new SchemaSampler(
            Resources.asCharSource(Resources.getResource("user-schema.txt"), Charsets.UTF_8).read());
    File userFile = File.createTempFile("user", "tsv");
    BufferedWriter out = Files.newBufferedWriter(userFile.toPath(), Charsets.UTF_8);
    for (int i = 0; i < opts.users; i++) {
        out.write(withTab.join(users.sample()));
        out.newLine();
    }
    out.close();

    // now generate a session for each user
    Splitter onTabs = Splitter.on("\t");
    Splitter onComma = Splitter.on(",");

    Random gen = new Random();
    SchemaSampler intermediate = new SchemaSampler(
            Resources.asCharSource(Resources.getResource("hit_step.txt"), Charsets.UTF_8).read());

    final int COUNTRY = users.getFieldNames().indexOf("country");
    final int CAMPAIGN = intermediate.getFieldNames().indexOf("campaign_list");
    final int SEARCH_TERMS = intermediate.getFieldNames().indexOf("search_keywords");
    Preconditions.checkState(COUNTRY >= 0, "Need country field in user schema");
    Preconditions.checkState(CAMPAIGN >= 0, "Need campaign_list field in step schema");
    Preconditions.checkState(SEARCH_TERMS >= 0, "Need search_keywords field in step schema");

    out = Files.newBufferedWriter(new File(opts.out).toPath(), Charsets.UTF_8);

    for (String line : Files.readAllLines(userFile.toPath(), Charsets.UTF_8)) {
        long t = (long) (TimeUnit.MILLISECONDS.convert(30, TimeUnit.DAYS) * gen.nextDouble());
        List<String> user = Lists.newArrayList(onTabs.split(line));

        // pick session length
        int n = (int) Math.floor(-30 * Math.log(gen.nextDouble()));

        for (int i = 0; i < n; i++) {
            // time on page
            int dt = (int) Math.floor(-20000 * Math.log(gen.nextDouble()));
            t += dt;

            // hit specific values
            JsonNode step = intermediate.sample();

            // check for purchase
            double p = 0.01;
            List<String> campaigns = Lists.newArrayList(onComma.split(step.get("campaign_list").asText()));
            List<String> keywords = Lists.newArrayList(onComma.split(step.get("search_keywords").asText()));
            if ((user.get(COUNTRY).equals("us") && campaigns.contains("5"))
                    || (user.get(COUNTRY).equals("jp") && campaigns.contains("7")) || keywords.contains("homer")
                    || keywords.contains("simpson")) {
                p = 0.5;
            }

            String events = gen.nextDouble() < p ? "1" : "-";

            out.write(Long.toString(t));
            out.write("\t");
            out.write(line);
            out.write("\t");
            out.write(withTab.join(step));
            out.write("\t");
            out.write(events);
            out.write("\n");
        }
    }
    out.close();
}

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