Example usage for java.math BigInteger intValue

List of usage examples for java.math BigInteger intValue

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Introduction

In this page you can find the example usage for java.math BigInteger intValue.

Prototype

public int intValue()

Source Link

Document

Converts this BigInteger to an int .

Usage

From source file:Main.java

public static void main(String[] args) {

    // assign values to bi1, bi2
    BigInteger bi1 = new BigInteger("123");
    BigInteger bi2 = new BigInteger("987654321");

    // assign the integer values of bi1, bi2 to i1, i2
    Integer i1 = bi1.intValue();
    Integer i2 = bi2.intValue();/*from   ww  w. j a  v a 2s.  c o m*/

    System.out.println(i1);
    System.out.println(i2);
}

From source file:Main.java

/**
 * Utility method to check validity of the provided code. The version must be base 36 encoded.
 *
 * @param code the code string to check.
 * @param expectedLength the length the code must be.
 * @param codeVersionStartIndex the start index (INCLUSIVE) to get the code version from.
 * @param codeVersionEndIndex the end index (EXCLUSIVE) to get the code version from.
 * @param expectedVersion the version code that the code's version should be checked against.
 * @return true if the code passes the expected length and version checks.
 *///  w ww  .j  a  v  a2 s.  c  o  m
public static boolean isValidCode(@NonNull final String code, final int expectedLength,
        final int codeVersionStartIndex, final int codeVersionEndIndex, final int expectedVersion) {
    boolean isValid = true;

    if (code.length() != expectedLength) {
        isValid = false;
    } else {
        final String versionCode = code.substring(codeVersionStartIndex, codeVersionEndIndex);
        final BigInteger i = new BigInteger(versionCode, Character.MAX_RADIX);

        if (i.intValue() != expectedVersion) {
            isValid = false;
        }
    }

    return isValid;
}

From source file:Main.java

public static boolean isGoodPrime(byte[] prime, int g) {
    if (!(g >= 2 && g <= 7)) {
        return false;
    }//from  w w w .  j a  v  a 2  s . co m

    if (prime.length != 256 || prime[0] >= 0) {
        return false;
    }

    BigInteger dhBI = new BigInteger(1, prime);

    if (g == 2) { // p mod 8 = 7 for g = 2;
        BigInteger res = dhBI.mod(BigInteger.valueOf(8));
        if (res.intValue() != 7) {
            return false;
        }
    } else if (g == 3) { // p mod 3 = 2 for g = 3;
        BigInteger res = dhBI.mod(BigInteger.valueOf(3));
        if (res.intValue() != 2) {
            return false;
        }
    } else if (g == 5) { // p mod 5 = 1 or 4 for g = 5;
        BigInteger res = dhBI.mod(BigInteger.valueOf(5));
        int val = res.intValue();
        if (val != 1 && val != 4) {
            return false;
        }
    } else if (g == 6) { // p mod 24 = 19 or 23 for g = 6;
        BigInteger res = dhBI.mod(BigInteger.valueOf(24));
        int val = res.intValue();
        if (val != 19 && val != 23) {
            return false;
        }
    } else if (g == 7) { // p mod 7 = 3, 5 or 6 for g = 7.
        BigInteger res = dhBI.mod(BigInteger.valueOf(7));
        int val = res.intValue();
        if (val != 3 && val != 5 && val != 6) {
            return false;
        }
    }

    String hex = bytesToHex(prime);
    if (hex.equals(
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{
        return true;
    }

    BigInteger dhBI2 = dhBI.subtract(BigInteger.valueOf(1)).divide(BigInteger.valueOf(2));
    return !(!dhBI.isProbablePrime(30) || !dhBI2.isProbablePrime(30));
}

From source file:Main.java

public static byte[] generateJSF(BigInteger g, BigInteger h) {
    int digits = Math.max(g.bitLength(), h.bitLength()) + 1;
    byte[] jsf = new byte[digits];

    BigInteger k0 = g, k1 = h;
    int j = 0, d0 = 0, d1 = 0;

    while (k0.signum() > 0 || k1.signum() > 0 || d0 > 0 || d1 > 0) {
        int n0 = (k0.intValue() + d0) & 7, n1 = (k1.intValue() + d1) & 7;

        int u0 = n0 & 1;
        if (u0 != 0) {
            u0 -= (n0 & 2);/*from   w w w .j  a v  a2  s .co  m*/
            if ((n0 + u0) == 4 && (n1 & 3) == 2) {
                u0 = -u0;
            }
        }

        int u1 = n1 & 1;
        if (u1 != 0) {
            u1 -= (n1 & 2);
            if ((n1 + u1) == 4 && (n0 & 3) == 2) {
                u1 = -u1;
            }
        }

        if ((d0 << 1) == 1 + u0) {
            d0 = 1 - d0;
        }
        if ((d1 << 1) == 1 + u1) {
            d1 = 1 - d1;
        }

        k0 = k0.shiftRight(1);
        k1 = k1.shiftRight(1);

        jsf[j++] = (byte) ((u0 << 4) | (u1 & 0xF));
    }

    // Reduce the JSF array to its actual length
    if (jsf.length > j) {
        jsf = trim(jsf, j);
    }

    return jsf;
}

From source file:Main.java

public static byte[] generateJSF(BigInteger g, BigInteger h) {
    int digits = Math.max(g.bitLength(), h.bitLength()) + 1;
    byte[] jsf = new byte[digits];

    BigInteger k0 = g, k1 = h;
    int j = 0, d0 = 0, d1 = 0;

    int offset = 0;
    while ((d0 | d1) != 0 || k0.bitLength() > offset || k1.bitLength() > offset) {
        int n0 = ((k0.intValue() >>> offset) + d0) & 7, n1 = ((k1.intValue() >>> offset) + d1) & 7;

        int u0 = n0 & 1;
        if (u0 != 0) {
            u0 -= (n0 & 2);/*w  ww. j  a  v  a2 s .  c  o m*/
            if ((n0 + u0) == 4 && (n1 & 3) == 2) {
                u0 = -u0;
            }
        }

        int u1 = n1 & 1;
        if (u1 != 0) {
            u1 -= (n1 & 2);
            if ((n1 + u1) == 4 && (n0 & 3) == 2) {
                u1 = -u1;
            }
        }

        if ((d0 << 1) == 1 + u0) {
            d0 ^= 1;
        }
        if ((d1 << 1) == 1 + u1) {
            d1 ^= 1;
        }

        if (++offset == 30) {
            offset = 0;
            k0 = k0.shiftRight(30);
            k1 = k1.shiftRight(30);
        }

        jsf[j++] = (byte) ((u0 << 4) | (u1 & 0xF));
    }

    // Reduce the JSF array to its actual length
    if (jsf.length > j) {
        jsf = trim(jsf, j);
    }

    return jsf;
}

From source file:com.clustercontrol.repository.util.RepositoryUtil.java

/**
 * BigIntegerIP(IPv6)?????/*from   w w w .  ja v a 2s . c  o m*/
 * @param argInt IPv6?
 * @return String
 */
public static String bigIntToIpV6(BigInteger argInt) {

    StringBuilder str = new StringBuilder();
    for (int i = 15; i >= 0; i--) {
        int shift = 8 * i;
        Integer n = 0xff;
        BigInteger num = argInt.shiftRight(shift).and(new BigInteger(n.toString()));
        int intNum = num.intValue();
        String s = Integer.toHexString(intNum);
        if (s.length() < 2) {
            s = "0" + s;
        }
        str.append(s);
        if (i > 0 && i < 15) {
            int f = i % 2;
            str.append(f == 0 ? ":" : "");
        }
    }
    return str.toString();
}

From source file:com.aurel.track.exchange.docx.exporter.StyleUtil.java

/**
 * Gets the styleIDs by outline levels://from  ww  w .java 2  s  .  c o m
 * Heading 1 is lvl 0
    There are 9 levels, so Heading 9 will be lvl 8
 * @param mainDocumentPart
 * @return
 */
static Map<Integer, String> getInterestingStyleIDs(MainDocumentPart mainDocumentPart) {
    Map<Integer, String> outlinelevelToStyleName = new HashMap<Integer, String>();
    StyleDefinitionsPart styleDefinitionsPart = mainDocumentPart.getStyleDefinitionsPart();
    Styles styles = null;
    try {
        styles = styleDefinitionsPart.getContents();
    } catch (Docx4JException e) {
        LOGGER.error("Getting the styles contents failed with " + e.getMessage());
        LOGGER.debug(ExceptionUtils.getStackTrace(e));
    }
    if (styles != null) {
        for (Style style : styles.getStyle()) {
            String sytleID = style.getStyleId();
            Style.Name name = style.getName();
            String styleName = name.getVal();
            if (styleName != null) {
                PPr pPr = style.getPPr();
                if (pPr != null) {
                    OutlineLvl outlineLvl = pPr.getOutlineLvl();
                    if (outlineLvl != null && styleName.startsWith(STANDARD_STYLE_NAMES.HEADING_NAME)) {
                        //sometimes other styles like Title have OutlineLvl
                        BigInteger level = outlineLvl.getVal();
                        outlinelevelToStyleName.put(Integer.valueOf(level.intValue()), sytleID);
                        LOGGER.debug("StyleID for level " + level + " is: " + sytleID);
                    }
                }
            }
        }
    }
    return outlinelevelToStyleName;
}

From source file:Main.java

public static byte[] generateJSF(BigInteger g, BigInteger h) {
    byte[] jsf = new byte[(Math.max(g.bitLength(), h.bitLength()) + 1)];
    BigInteger k0 = g;
    BigInteger k1 = h;//from www .  ja v  a2s .  c om
    int d0 = 0;
    int d1 = 0;
    int offset = 0;
    int j = 0;
    while (true) {
        if ((d0 | d1) == 0 && k0.bitLength() <= offset && k1.bitLength() <= offset) {
            break;
        }
        int n0 = ((k0.intValue() >>> offset) + d0) & 7;
        int n1 = ((k1.intValue() >>> offset) + d1) & 7;
        int u0 = n0 & 1;
        if (u0 != 0) {
            u0 -= n0 & 2;
            if (n0 + u0 == 4 && (n1 & 3) == 2) {
                u0 = -u0;
            }
        }
        int u1 = n1 & 1;
        if (u1 != 0) {
            u1 -= n1 & 2;
            if (n1 + u1 == 4 && (n0 & 3) == 2) {
                u1 = -u1;
            }
        }
        if ((d0 << 1) == u0 + 1) {
            d0 ^= 1;
        }
        if ((d1 << 1) == u1 + 1) {
            d1 ^= 1;
        }
        offset++;
        if (offset == 30) {
            offset = 0;
            k0 = k0.shiftRight(30);
            k1 = k1.shiftRight(30);
        }
        int j2 = j + 1;
        jsf[j] = (byte) ((u0 << 4) | (u1 & 15));
        j = j2;
    }
    if (jsf.length > j) {
        return trim(jsf, j);
    }
    return jsf;
}

From source file:com.aurel.track.exchange.docx.exporter.StyleUtil.java

/**
 * Gets styles//w ww.j  a v a2  s .  c o  m
 * @param mainDocumentPart
 * @param paragaphStylesSet
 * @param characterStylesSet
 * @param outlinelevelToStyleName
 */
public static void getStyles(MainDocumentPart mainDocumentPart, Map<String, String> paragaphStylesSet,
        Map<String, String> characterStylesSet, Map<Integer, String> outlinelevelToStyleName) {
    StyleDefinitionsPart styleDefinitionsPart = mainDocumentPart.getStyleDefinitionsPart();
    Styles styles = null;
    try {
        styles = styleDefinitionsPart.getContents();
    } catch (Docx4JException e) {
        LOGGER.error("Getting the styles contents failed with " + e.getMessage());
        LOGGER.debug(ExceptionUtils.getStackTrace(e));
    }
    if (styles != null) {
        for (Style style : styles.getStyle()) {
            String styleID = style.getStyleId();
            String type = style.getType();
            Style.Name name = style.getName();
            String styleName = name.getVal();
            if (styleName != null) {
                if (STYLE_TYPE.CHARACTER.equals(type)) {
                    characterStylesSet.put(styleName, styleID);
                    LOGGER.debug("Character styleID " + styleID + " with name " + styleName);
                } else {
                    if (STYLE_TYPE.PARAGRAPH.endsWith(type)) {
                        paragaphStylesSet.put(styleName, styleID);
                        LOGGER.debug("Paragaph styleID " + styleID + " with name " + styleName);
                        PPr pPr = style.getPPr();
                        if (pPr != null) {
                            OutlineLvl outlineLvl = pPr.getOutlineLvl();
                            if (outlineLvl != null && styleName.startsWith(STANDARD_STYLE_NAMES.HEADING_NAME)) {
                                //sometimes other styles like Title have OutlineLvl
                                BigInteger level = outlineLvl.getVal();
                                outlinelevelToStyleName.put(Integer.valueOf(level.intValue()), styleID);
                                LOGGER.debug("Heading StyleID for level " + level + " is: " + styleID);
                            }
                        }
                    }
                }

            }
        }
    }

}

From source file:org.codice.ddf.spatial.ogc.wps.process.endpoint.Validator.java

/**
 * @param inputs/*from  www .j a v a 2 s  .  c  o m*/
 * @param inputDescription
 * @throws WpsException
 */
public static void validateProcessInputsMinMaxOccurs(List<Data> inputs, DataDescription inputDescription) {

    if (CollectionUtils.isEmpty(inputs)) {
        if (BigInteger.ZERO.equals(inputDescription.getMinOccurs())) {
            return;
        } else {
            throw new WpsException("Too few input items have been specified.", "TooFewInputs",
                    inputDescription.getId());
        }
    }

    BigInteger maxOccurs = inputDescription.getMaxOccurs() == null ? BigInteger.ONE
            : inputDescription.getMaxOccurs();

    if (inputs.size() > maxOccurs.intValue()) {
        throw new WpsException("Too many input items have been specified.", "TooManyInputs",
                inputDescription.getId());
    }
    BigInteger minOccurs = inputDescription.getMinOccurs() == null ? BigInteger.ONE
            : inputDescription.getMinOccurs();
    if (inputs.size() < minOccurs.intValue()) {
        throw new WpsException("Too few input items have been specified.", "TooFewInputs",
                inputDescription.getId());
    }
    inputs.forEach(input -> validateProcessInputData(input, inputDescription));
}