Module io.jenetics.ext

Package io.jenetics.ext.internal.util

Class Randoms

java.lang.Object

io.jenetics.ext.internal.util.Randoms

public class Randoms
extends Object

Since:

3.5

Version:

3.5

Method Summary

Modifier and Type	Method	Description
static BigInteger	nextBigInteger(BigInteger min, BigInteger max, RandomGenerator random)	Returns a pseudo-random, uniformly distributed int value between min and max (min and max included).
static BigInteger	nextBigInteger(BigInteger n, RandomGenerator random)	Returns a pseudo-random, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from the given random number generator's sequence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

nextBigInteger

public static BigInteger nextBigInteger(BigInteger n,
 RandomGenerator random)

Returns a pseudo-random, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from the given random number generator's sequence.

Parameters:

n - the bound on the random number to be returned. Must be positive.

random - the random engine used for creating the random number.

Returns:

the next pseudo-random, uniformly distributed int value between 0 (inclusive) and n (exclusive) from the given random number generator's sequence

Throws:

IllegalArgumentException - if n is smaller than 1.

NullPointerException - if the given random engine of the maximal value n is null.

nextBigInteger

public static BigInteger nextBigInteger(BigInteger min,
 BigInteger max,
 RandomGenerator random)

Returns a pseudo-random, uniformly distributed int value between min and max (min and max included).

Parameters:

min - lower bound for generated long integer (inclusively)

max - upper bound for generated long integer (exclusively)

random - the random engine to use for calculating the random long value

Returns:

a random long integer greater than or equal to min and less than or equal to max

Throws:

IllegalArgumentException - if min >= max

NullPointerException - if one of the given parameters are null.