Class UnfilteredRandom

java.lang.Object
  UnfilteredRandom

All Implemented Interfaces:

RandomWithParity

public class UnfilteredRandom
extends java.lang.Object
implements RandomWithParity

A random number generator that returns a number within the specified bound and of alternating parity. The number returned from the first call is even, then odd, then even and so on.

Correspondence (abstraction relation):

numCalls = |history|

Author:

paolo

Field Summary

private java.util.Random	generator Generates a stream of random numbers.
private int	numCalls Number of times the generateNumber method has been called.

Constructor Summary

UnfilteredRandom()
Initially, no calls have been made.

Method Summary

int	generateNumber(int upperBound) Generates a random number in the specified interval.

Methods inherited from class java.lang.Object

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

Field Detail

numCalls

private int numCalls

Number of times the generateNumber method has been called.

generator

private java.util.Random generator

Generates a stream of random numbers.

Constructor Detail

UnfilteredRandom

UnfilteredRandom()

Initially, no calls have been made.

Method Detail

generateNumber

public int generateNumber(int upperBound)

Generates a random number in the specified interval.

Specified by:

generateNumber in interface RandomWithParity

Parameters:

upperBound - the maximum value that can be generated by this call

Returns:

0 <= generateNumber <= upperBound

See Also:

RandomWithParity.generateNumber(int)