umontreal.iro.lecuyer.randvar

Class UniformIntGen

java.lang.Object

umontreal.iro.lecuyer.randvar.RandomVariateGen

umontreal.iro.lecuyer.randvar.RandomVariateGenInt

umontreal.iro.lecuyer.randvar.UniformIntGen

public class UniformIntGen
extends RandomVariateGenInt

This class implements a random variate generator for the uniform distribution over integers, over the interval [i, j]. Its mass function is

p(x) = 1/(j - i + 1) for x = i, i + 1,…, j

and 0 elsewhere.

Constructor Summary

Constructors

Constructor and Description
UniformIntGen(RandomStream s, int i, int j) Creates a uniform random variate generator over the integers in the closed interval [i, j], using stream s.
UniformIntGen(RandomStream s, UniformIntDist dist) Creates a new generator for the distribution dist, using stream s.

Method Summary

Methods

Modifier and Type	Method and Description
int	getI() Returns the parameter i.
int	getJ() Returns the parameter j.
static int	nextInt(RandomStream s, int i, int j) Generates a new uniform random variate over the interval [i, j], using stream s, by inversion.

Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGenInt

getDistribution, nextArrayOfInt, nextInt

Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGen

getStream, nextArrayOfDouble, nextDouble, setStream

Methods inherited from class java.lang.Object

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

Constructor Detail

UniformIntGen

public UniformIntGen(RandomStream s,
             int i,
             int j)

Creates a uniform random variate generator over the integers in the closed interval [i, j], using stream s.

UniformIntGen

public UniformIntGen(RandomStream s,
             UniformIntDist dist)

Creates a new generator for the distribution dist, using stream s.

Method Detail

nextInt

public static int nextInt(RandomStream s,
          int i,
          int j)

Generates a new uniform random variate over the interval [i, j], using stream s, by inversion.

getI

public int getI()

Returns the parameter i.

getJ

public int getJ()

Returns the parameter j.