ds.funnel.util

Class RandUtil

java.lang.Object

ds.funnel.util.RandUtil

public class RandUtil
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
RandUtil()

Method Summary

Modifier and Type	Method and Description
static <T> T	getRandomElem(java.util.List<T> inList) Get a random element from a list
static java.io.File	getRandomFile(java.lang.String inDirName) Get a random file in a directory
static double	normal(double mean, double stdDev)
static int	uniform(int min, int max)

Methods inherited from class java.lang.Object

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

Constructor Detail

RandUtil

public RandUtil()

Method Detail

uniform

public static int uniform(int min,
                          int max)

Returns:

a random integer uniformly generated between min, inclusive, and max, exclusive

normal

public static double normal(double mean,
                            double stdDev)

Returns:

a randomly generated double from a normal distribution with the specified mean and standard deviation

getRandomElem

public static <T> T getRandomElem(java.util.List<T> inList)

Get a random element from a list

Parameters:

inList - - The input list

Returns:

A random element from the input list

getRandomFile

public static java.io.File getRandomFile(java.lang.String inDirName)

Get a random file in a directory

Parameters:

inDirName - - The directory name

Returns:

A random file for the directory