com.carrotsearch.hppc

Class FloatIntScatterMap

java.lang.Object

com.carrotsearch.hppc.FloatIntHashMap

com.carrotsearch.hppc.FloatIntScatterMap

All Implemented Interfaces:

FloatIntAssociativeContainer, FloatIntMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<FloatIntCursor>

@Generated(date="2017-10-22T12:19:55+0200",
           value="KTypeVTypeScatterMap.java")
public class FloatIntScatterMap
extends FloatIntHashMap

Same as FloatIntHashMap 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.FloatIntHashMap

FloatIntHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.FloatIntHashMap

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

Constructor Summary

Constructors

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

Method Summary

Methods

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

Methods inherited from class com.carrotsearch.hppc.FloatIntHashMap

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

FloatIntScatterMap

public FloatIntScatterMap()

New instance with sane defaults.

FloatIntScatterMap

public FloatIntScatterMap(int expectedElements)

New instance with sane defaults.

FloatIntScatterMap

public FloatIntScatterMap(int expectedElements,
                  double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(float key)

Description copied from class: FloatIntHashMap

Returns a hash code for the given key.

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

from

public static FloatIntScatterMap from(float[] keys,
                      int[] values)

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