Class ListUtils

java.lang.Object

net.mcreator.util.ListUtils

public class ListUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
ListUtils()

Method Summary

Modifier and Type	Method	Description
static <K,V> List<Map<K,V>>	cartesianProduct(Map<K, ? extends List<V>> input)	Generates the full Cartesian product of a set of keys and their possible values.
static <T> T	getRandomItem(List<T> list)
static <T> T	getRandomItem(Random random, List<T> list)
static <T> T	getRandomItem(Random random, T[] list)
static <T> T	getRandomItem(T[] list)
static <T> Collection<T>	intersect(Collection<T> a, Collection<T> b)
static <T> List<T>	merge(Collection<T>... collections)
static <T> Set<T>	mergeNoDuplicates(Collection<T>... collections)
static <T> void	rearrange(List<T> items, T input)

Methods inherited from class Object

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

Constructor Details

ListUtils

public ListUtils()

Method Details

merge

@SafeVarargs
public static <T> List<T> merge(Collection<T>... collections)

mergeNoDuplicates

@SafeVarargs
public static <T> Set<T> mergeNoDuplicates(Collection<T>... collections)

intersect

public static <T> Collection<T> intersect(Collection<T> a,
 Collection<T> b)

rearrange

public static <T> void rearrange(List<T> items,
 T input)

getRandomItem

public static <T> T getRandomItem(T[] list)

getRandomItem

public static <T> T getRandomItem(List<T> list)

getRandomItem

public static <T> T getRandomItem(Random random,
 T[] list)

getRandomItem

public static <T> T getRandomItem(Random random,
 List<T> list)

cartesianProduct

public static <K,V> List<Map<K,V>> cartesianProduct(Map<K, ? extends List<V>> input)

Generates the full Cartesian product of a set of keys and their possible values.

Example: If the map contains:

  A -> [1, 2]
  B -> [true, false]

The output will be a list containing:

  {A=1, B=true}
  {A=1, B=false}
  {A=2, B=true}
  {A=2, B=false}

Type Parameters:

K - key type

V - value type

Parameters:

input - map of keys and their possible values; order of keys defines output order

Returns:

all combinations as a list of maps (each map is a unique combination)