org.dllearner.utilities.datastructures
Class Maps

java.lang.Object
  org.dllearner.utilities.datastructures.Maps

public class Maps
extends Object

Author:

Jens Lehmann

Constructor Summary

Maps()

Method Summary

static <X,Y> Map<Y,Collection<X>>	revert(Map<X,Y> map) Reverts a map, i.e. if the map contains an entry x => y, then the returned map contains an entry y => x.
static <X,Y> Map<Y,Collection<X>>	revertCollectionMap(Map<X,Collection<Y>> map)

Methods inherited from class java.lang.Object

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

Constructor Detail

Maps

public Maps()

Method Detail

revert

public static <X,Y> Map<Y,Collection<X>> revert(Map<X,Y> map)

Reverts a map, i.e. if the map contains an entry x => y, then the returned map contains an entry y => x. (The minimal map with this property is returned.)

Type Parameters:

X - Type of map keys.

Y - Type of map values

Parameters:

map - The map to invert.

Returns:

A reverted map.

revertCollectionMap

public static <X,Y> Map<Y,Collection<X>> revertCollectionMap(Map<X,Collection<Y>> map)