com.carrotsearch.hppc

Class ByteIntScatterMap

java.lang.Object

com.carrotsearch.hppc.ByteIntHashMap

com.carrotsearch.hppc.ByteIntScatterMap

All Implemented Interfaces:

ByteIntAssociativeContainer, ByteIntMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<ByteIntCursor>

@Generated(date="2023-04-24T17:14:49+0800",
           value="KTypeVTypeScatterMap.java")
public class ByteIntScatterMap
extends ByteIntHashMap

Same as ByteIntHashMap 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.ByteIntHashMap

ByteIntHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.ByteIntHashMap

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

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
static ByteIntScatterMap	from(byte[] keys, int[] 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.ByteIntHashMap

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

ByteIntScatterMap

public ByteIntScatterMap()

New instance with sane defaults.

ByteIntScatterMap

public ByteIntScatterMap(int expectedElements)

New instance with sane defaults.

ByteIntScatterMap

public ByteIntScatterMap(int expectedElements,
                         double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(byte key)

Description copied from class: ByteIntHashMap

Returns a hash code for the given key.

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

from

public static ByteIntScatterMap from(byte[] keys,
                                     int[] values)

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