cz.cuni.amis.utils.collections
Class MyCollections

java.lang.Object
  cz.cuni.amis.utils.collections.MyCollections

public class MyCollections
extends java.lang.Object

Nested Class Summary

static interface

MyCollections.IToString

Field Summary

static MyCollections.IToString

TO_STRING

Constructor Summary

MyCollections()

Method Summary

static <T> java.util.List<T>	asList(java.util.Collection<T> objects)
static <T> java.util.List<T>	asList(java.util.Collection<T> objects, ObjectFilter filter)
static <T> java.util.List<T>	asList(T[] objects)
static <T> java.util.List<T>	asList(T[] objects, ObjectFilter filter)
static <T> T	getRandom(java.util.Collection<T> col) Returns random element from the collection.
static <T> T	getRandom(java.util.List<T> list) Returns random element from the list.
static <T> T	getRandom(T[] array) Returns random element from the array.
static <T> void	toList(T[] objects, java.util.List<T> list)
static <T> void	toList(T[] objects, java.util.List<T> list, ObjectFilter filter)
static java.lang.String	toString(java.lang.Object objToString, java.lang.String[] prefixes, java.lang.String[] postfixes, java.lang.String[] separators, MyCollections.IToString toString)
static java.lang.String	toString(java.lang.Object obj, java.lang.String prefix, java.lang.String postfix, java.lang.String separator)
static java.lang.String	toString(java.lang.Object obj, java.lang.String prefix, java.lang.String postfix, java.lang.String separator, MyCollections.IToString toString)

Methods inherited from class java.lang.Object

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

Field Detail

TO_STRING

public static final MyCollections.IToString TO_STRING

Constructor Detail

MyCollections

public MyCollections()

Method Detail

getRandom

public static <T> T getRandom(java.util.Collection<T> col)

Returns random element from the collection.

WARNING: O(n) time complexity in the worst case scenario!

Type Parameters:

T -

Parameters:

col -

Returns:

getRandom

public static <T> T getRandom(java.util.List<T> list)

Returns random element from the list.

O(1) time complexity.

Type Parameters:

T -

Parameters:

list -

Returns:

getRandom

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

Returns random element from the array.

Type Parameters:

T -

Parameters:

array -

Returns:

toList

public static <T> void toList(T[] objects,
                              java.util.List<T> list)

toList

public static <T> void toList(T[] objects,
                              java.util.List<T> list,
                              ObjectFilter filter)

asList

public static <T> java.util.List<T> asList(T[] objects)

asList

public static <T> java.util.List<T> asList(java.util.Collection<T> objects)

asList

public static <T> java.util.List<T> asList(T[] objects,
                                           ObjectFilter filter)

asList

public static <T> java.util.List<T> asList(java.util.Collection<T> objects,
                                           ObjectFilter filter)

toString

public static java.lang.String toString(java.lang.Object objToString,
                                        java.lang.String[] prefixes,
                                        java.lang.String[] postfixes,
                                        java.lang.String[] separators,
                                        MyCollections.IToString toString)

toString

public static java.lang.String toString(java.lang.Object obj,
                                        java.lang.String prefix,
                                        java.lang.String postfix,
                                        java.lang.String separator)

toString

public static java.lang.String toString(java.lang.Object obj,
                                        java.lang.String prefix,
                                        java.lang.String postfix,
                                        java.lang.String separator,
                                        MyCollections.IToString toString)