Package com.carrotsearch.hppc
Class CharCharScatterMap
java.lang.Object
com.carrotsearch.hppc.CharCharHashMap
com.carrotsearch.hppc.CharCharScatterMap
- All Implemented Interfaces:
CharCharAssociativeContainer
,CharCharMap
,Preallocable
,Cloneable
,Iterable<CharCharCursor>
@Generated(date="2024-02-21T00:00:00+0000",
value="KTypeVTypeScatterMap.java")
public class CharCharScatterMap
extends CharCharHashMap
Same as
CharCharHashMap
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.
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Nested Class Summary
Nested classes/interfaces inherited from class com.carrotsearch.hppc.CharCharHashMap
CharCharHashMap.KeysContainer
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Field Summary
Fields inherited from class com.carrotsearch.hppc.CharCharHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
ConstructorsConstructorDescriptionNew instance with sane defaults.CharCharScatterMap
(int expectedElements) New instance with sane defaults.CharCharScatterMap
(int expectedElements, double loadFactor) New instance with sane defaults. -
Method Summary
Modifier and TypeMethodDescriptionstatic CharCharScatterMap
from
(char[] keys, char[] 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.CharCharHashMap
addTo, allocateBuffers, allocateThenInsertThenRehash, clear, clone, containsKey, ensureCapacity, equalElements, equals, 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
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Constructor Details
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CharCharScatterMap
public CharCharScatterMap()New instance with sane defaults. -
CharCharScatterMap
public CharCharScatterMap(int expectedElements) New instance with sane defaults. -
CharCharScatterMap
public CharCharScatterMap(int expectedElements, double loadFactor) New instance with sane defaults.
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Method Details
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hashKey
protected int hashKey(char key) Description copied from class:CharCharHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
CharCharHashMap.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 classCharCharHashMap
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from
Creates a hash map from two index-aligned arrays of key-value pairs.
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