Example usage for java.math BigInteger valueOf

Introduction

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

Prototype

private static BigInteger valueOf(int val[])

Source Link

Document

Returns a BigInteger with the given two's complement representation.

Usage

From source file:Main.java

private static int gcd(int a, int b) {
    return BigInteger.valueOf((long) a).gcd(BigInteger.valueOf((long) b)).intValue();
}

From source file:Main.java

public static String bigInteger2str(BigInteger amount) {

    return (amount.divide((BigInteger.valueOf(100l)))).toString();
}

From source file:Main.java

public static BigInteger sqrt(final BigInteger val) {
    final BigInteger two = BigInteger.valueOf(2);
    BigInteger a = BigInteger.ONE.shiftLeft(val.bitLength() / 2);
    BigInteger b;//from   w w  w  .ja  va 2  s .  co  m
    do {
        b = val.divide(a);
        a = (a.add(b)).divide(two);
    } while (a.subtract(b).abs().compareTo(two) >= 0);
    return a;
}

From source file:Main.java

public static byte[] toBytes(long num) {
    BigInteger a = BigInteger.valueOf(num);
    byte[] temp = a.toByteArray();
    byte[] tr = new byte[temp.length];

    for (int i = 0; i < tr.length; i++) {
        tr[i] = temp[temp.length - 1 - i];
    }/*from   w w w  .  j a  va  2 s .  co m*/
    return tr;
}

From source file:Main.java

public static byte[] convertIntToByteArray(int arg) {
    BigInteger bigInt = BigInteger.valueOf(arg);
    return bigInt.toByteArray();
}

From source file:Main.java

public static String longToHex(long l) {
    return byteArrayToHex(BigInteger.valueOf(l).toByteArray(), null);
}

From source file:Main.java

public static String longToPrettyHex(long v) {
    return byteArrayToHex(BigInteger.valueOf(v).toByteArray(), " ");
}

From source file:Main.java

public static boolean isGoodGaAndGb(BigInteger g_a, BigInteger p) {
    return !(g_a.compareTo(BigInteger.valueOf(1)) != 1
            || g_a.compareTo(p.subtract(BigInteger.valueOf(1))) != -1);
}

From source file:Main.java

public static BigInteger sumOf(Collection<Integer> numbers) {
    BigInteger sum = BigInteger.ZERO;
    for (Integer n : numbers) {
        sum = sum.add(BigInteger.valueOf(n));
    }// w  ww  .  jav a  2s  .c  om
    return sum;
}

From source file:Main.java

public static BigInteger productOf(Collection<Integer> numbers) {
    BigInteger sum = BigInteger.ONE;
    for (Integer n : numbers) {
        sum = sum.multiply(BigInteger.valueOf(n));
    }//  ww w.j  a v  a2 s  .  c o m
    return sum;
}