com.carrotsearch.hppc

Class IntShortScatterMap

java.lang.Object

com.carrotsearch.hppc.IntShortHashMap

com.carrotsearch.hppc.IntShortScatterMap

All Implemented Interfaces:

IntShortAssociativeContainer, IntShortMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<IntShortCursor>

@Generated(date="2017-10-22T12:31:12+0200",
           value="KTypeVTypeScatterMap.java")
public class IntShortScatterMap
extends IntShortHashMap

Same as IntShortHashMap 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.IntShortHashMap

IntShortHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.IntShortHashMap

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

Constructor Summary

Constructors

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

Method Summary

Methods

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

Methods inherited from class com.carrotsearch.hppc.IntShortHashMap

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

Constructor Detail

IntShortScatterMap

public IntShortScatterMap()

New instance with sane defaults.

IntShortScatterMap

public IntShortScatterMap(int expectedElements)

New instance with sane defaults.

IntShortScatterMap

public IntShortScatterMap(int expectedElements,
                  double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(int key)

Description copied from class: IntShortHashMap

Returns a hash code for the given key.

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

from

public static IntShortScatterMap from(int[] keys,
                      short[] values)

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