com.carrotsearch.hppc

Class CharShortScatterMap

java.lang.Object

com.carrotsearch.hppc.CharShortHashMap

com.carrotsearch.hppc.CharShortScatterMap

All Implemented Interfaces:

CharShortAssociativeContainer, CharShortMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<CharShortCursor>

@Generated(date="2015-05-07T09:33:04+0200",
           value="KTypeVTypeScatterMap.java")
public class CharShortScatterMap
extends CharShortHashMap

Same as CharShortHashMap but does not implement per-instance key mixing strategy and uses a simpler (faster) bit distribution function.

Note: read about important differences between hash and scatter sets.

Nested Class Summary

Nested classes/interfaces inherited from class com.carrotsearch.hppc.CharShortHashMap

CharShortHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.CharShortHashMap

assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values

Constructor Summary

Constructors

Constructor and Description
CharShortScatterMap() New instance with sane defaults.
CharShortScatterMap(int expectedElements) New instance with sane defaults.
CharShortScatterMap(int expectedElements, double loadFactor) New instance with sane defaults.

Method Summary

Modifier and Type	Method and Description
static CharShortScatterMap	from(char[] keys, short[] values) Creates a hash map from two index-aligned arrays of key-value pairs.
protected int	hashKey(char key) Returns a hash code for the given key.

Methods inherited from class com.carrotsearch.hppc.CharShortHashMap

addTo, allocateBuffers, allocateThenInsertThenRehash, clear, clone, containsKey, ensureCapacity, equalElements, equals, forEach, forEach, get, getOrDefault, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, keys, put, putAll, putAll, putIfAbsent, putOrAdd, rehash, release, remove, removeAll, removeAll, removeAll, shiftConflictingKeys, size, toString, values, verifyLoadFactor, visualizeKeyDistribution

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

CharShortScatterMap

public CharShortScatterMap()

New instance with sane defaults.

CharShortScatterMap

public CharShortScatterMap(int expectedElements)

New instance with sane defaults.

CharShortScatterMap

public CharShortScatterMap(int expectedElements,
                           double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(char key)

Description copied from class: CharShortHashMap

Returns a hash code for the given key.

The default implementation mixes the hash of the key with CharShortHashMap.keyMixer to differentiate hash order of keys between hash containers. Helps alleviate problems resulting from linear conflict resolution in open addressing.

The output from this function should evenly distribute keys across the entire integer range.

Overrides:

hashKey in class CharShortHashMap

from

public static CharShortScatterMap from(char[] keys,
                                       short[] values)

Creates a hash map from two index-aligned arrays of key-value pairs.