Package dk.jonaslindstrom.ruffini.common.util

Class SamplingUtils

java.lang.Object

dk.jonaslindstrom.ruffini.common.util.SamplingUtils

public class SamplingUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
SamplingUtils()

Method Summary

Modifier and Type	Method	Description
static List<BigInteger>	generateDecreasingSequence(BigInteger n, Random random)	Generate a decreasing list of numbers s_0, s_1, ..., s_k such that s_0 \leq n and s_k = 1.
static BigInteger	sample(BigInteger n, Random random)	Sample a random BigInteger in the range [0,n)
static Optional<Pair<BigInteger,List<BigInteger>>>	sampleFactoredNumber(BigInteger upperBound, Random random)
static BigInteger	sampleInclusive(BigInteger n, Random random)	Sample a random BigInteger in the range [0,n]

Methods inherited from class java.lang.Object

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

Constructor Details

SamplingUtils

public SamplingUtils()

Method Details

sample

public static BigInteger sample(BigInteger n,
 Random random)

Sample a random BigInteger in the range [0,n)

sampleFactoredNumber

public static Optional<Pair<BigInteger,List<BigInteger>>> sampleFactoredNumber(BigInteger upperBound,
 Random random)

sampleInclusive

public static BigInteger sampleInclusive(BigInteger n,
 Random random)

Sample a random BigInteger in the range [0,n]

generateDecreasingSequence

public static List<BigInteger> generateDecreasingSequence(BigInteger n,
 Random random)

Generate a decreasing list of numbers s_0, s_1, ..., s_k such that s_0 \leq n and s_k = 1.