com.carrotsearch.hppc

Class ByteShortScatterMap

java.lang.Object

com.carrotsearch.hppc.ByteShortHashMap

com.carrotsearch.hppc.ByteShortScatterMap

All Implemented Interfaces:

ByteShortAssociativeContainer, ByteShortMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<ByteShortCursor>

@Generated(date="2016-10-25T13:31:57+0200",
           value="KTypeVTypeScatterMap.java")
public class ByteShortScatterMap
extends ByteShortHashMap

Same as ByteShortHashMap 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.ByteShortHashMap

ByteShortHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.ByteShortHashMap

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

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class com.carrotsearch.hppc.ByteShortHashMap

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

ByteShortScatterMap

public ByteShortScatterMap()

New instance with sane defaults.

ByteShortScatterMap

public ByteShortScatterMap(int expectedElements)

New instance with sane defaults.

ByteShortScatterMap

public ByteShortScatterMap(int expectedElements,
                           double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(byte key)

Description copied from class: ByteShortHashMap

Returns a hash code for the given key.

The default implementation mixes the hash of the key with ByteShortHashMap.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 ByteShortHashMap

from

public static ByteShortScatterMap from(byte[] keys,
                                       short[] values)

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