Package ru.cwcode.cwutils.collections

Class CollectionUtils

java.lang.Object

ru.cwcode.cwutils.collections.CollectionUtils

public class CollectionUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
CollectionUtils()

Method Summary

Modifier and Type	Method	Description
static <T> int	add(T item, int toAdd, Map<T,Integer> map)
static <T> Collection<T>	combine(Collection<T>... lists)
static <T> boolean	containsAny(Collection<T> one, Collection<T> two)	Используйте HashSet для параметров, если коллекции достаточно большие
static <T> int	decrement(T item, Map<T,Integer> map)
static int	getFirstAvailableID(Collection<Integer> set, int minID)
static <T> T	getRandomArrayEntry(T... values)
static <T> T	getRandomListEntry(List<T> list)
static <T> T	getRandomWeightedElement(Collection<T> elements, Function<T,? extends Number> chanceExtractor)
static <T> T	getRandomWeightedElement(Map<T,? extends Number> map)
static String	getStringOfArray(Object[] values)
static <T> boolean	hasAllElements(Collection<T> toCheck, Collection<T> elements)	Используйте HashSet для параметров, если коллекции достаточно большие
static <T> int	increment(T item, Map<T,Integer> map)
static void	shuffleArray(int[] ar)	Deprecated.
static <T> T[]	shuffleArray(T[] array)
static String	toString(Object[] values, String prefix, String suffix, boolean removeLastSuffix)
static <T> String	toString(List<T> values)
static <T> String	toString(List<T> values, String prefix, String suffix, boolean removeLastSuffix)

Methods inherited from class java.lang.Object

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

Constructor Details

CollectionUtils

public CollectionUtils()

Method Details

getRandomListEntry

@Nullable
public static <T> T getRandomListEntry(List<T> list)

getRandomArrayEntry

@SafeVarargs
public static <T> T getRandomArrayEntry(T... values)

shuffleArray

@Deprecated
public static void shuffleArray(int[] ar)

Deprecated.

shuffleArray

public static <T> T[] shuffleArray(T[] array)

combine

@SafeVarargs
public static <T> Collection<T> combine(Collection<T>... lists)

containsAny

public static <T> boolean containsAny(Collection<T> one,
 Collection<T> two)

Используйте HashSet для параметров, если коллекции достаточно большие

hasAllElements

public static <T> boolean hasAllElements(Collection<T> toCheck,
 Collection<T> elements)

Используйте HashSet для параметров, если коллекции достаточно большие

getStringOfArray

public static String getStringOfArray(Object[] values)

toString

public static String toString(Object[] values,
 String prefix,
 String suffix,
 boolean removeLastSuffix)

toString

public static <T> String toString(List<T> values)

toString

public static <T> String toString(List<T> values,
 String prefix,
 String suffix,
 boolean removeLastSuffix)

increment

public static <T> int increment(T item,
 Map<T,Integer> map)

add

public static <T> int add(T item,
 int toAdd,
 Map<T,Integer> map)

decrement

public static <T> int decrement(T item,
 Map<T,Integer> map)

getRandomWeightedElement

public static <T> T getRandomWeightedElement(Map<T,? extends Number> map)

getRandomWeightedElement

public static <T> T getRandomWeightedElement(Collection<T> elements,
 Function<T,? extends Number> chanceExtractor)

getFirstAvailableID

public static int getFirstAvailableID(Collection<Integer> set,
 int minID)