pl.jalokim.utils.random

Class RandomUtils

java.lang.Object

pl.jalokim.utils.random.RandomUtils

public final class RandomUtils
extends Object

Util class for some random things.

Method Summary

Modifier and Type	Method and Description
static void	ownRandomImpl(RandomUtilImpl newImpl)
static <T> T	randomElement(Collection<T> elements) It returns random element from collection.
static <T> T	randomElement(T... elements) It returns random element from array.
static <T> int	randomIndex(List<T> elements) It returns random index for element from collection.
static <T> int	randomIndex(T... elements) It returns random index for element from array.
static int	randomInRange(int min, int max) Return random integer number.
static boolean	randomTrue() It returns true or false randomly.
static boolean	randomTrue(int probabilityOfTrueInPercent) It returns true or false randomly based on probability of true value of boolean.

Methods inherited from class java.lang.Object

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

Method Detail

ownRandomImpl

public static void ownRandomImpl(RandomUtilImpl newImpl)

randomInRange

public static int randomInRange(int min,
                                int max)

Return random integer number.

Parameters:

min - returned value

max - returned value

Returns:

random value between min and max arguments.

randomIndex

public static <T> int randomIndex(List<T> elements)

It returns random index for element from collection.

Type Parameters:

T - generic type for collection argument.

Parameters:

elements - for random index.

Returns:

random index.

randomIndex

public static <T> int randomIndex(T... elements)

It returns random index for element from array.

Type Parameters:

T - generic type for array argument.

Parameters:

elements - for random index.

Returns:

random index.

randomElement

public static <T> T randomElement(Collection<T> elements)

It returns random element from collection.

Type Parameters:

T - generic type for collection argument.

Parameters:

elements - from which will be found random element.

Returns:

random element.

randomElement

public static <T> T randomElement(T... elements)

It returns random element from array.

Type Parameters:

T - generic type for array.

Parameters:

elements - from which will be found random element.

Returns:

random element.

randomTrue

public static boolean randomTrue()

It returns true or false randomly.

Returns:

random boolean value.

randomTrue

public static boolean randomTrue(int probabilityOfTrueInPercent)

It returns true or false randomly based on probability of true value of boolean.

Returns:

random boolean value.