Package com.carrotsearch.hppc
Class CharCharScatterMap
- java.lang.Object
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- com.carrotsearch.hppc.CharCharHashMap
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- com.carrotsearch.hppc.CharCharScatterMap
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- All Implemented Interfaces:
CharCharAssociativeContainer
,CharCharMap
,Preallocable
,java.lang.Cloneable
,java.lang.Iterable<CharCharCursor>
@Generated(date="2024-05-16T12:00:00+0000", value="KTypeVTypeScatterMap.java") public class CharCharScatterMap extends CharCharHashMap
Same asCharCharHashMap
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
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Nested classes/interfaces inherited from class com.carrotsearch.hppc.CharCharHashMap
CharCharHashMap.KeysContainer
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Field Summary
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Fields inherited from class com.carrotsearch.hppc.CharCharHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
Constructors Constructor Description CharCharScatterMap()
New instance with sane defaults.CharCharScatterMap(int expectedElements)
New instance with sane defaults.CharCharScatterMap(int expectedElements, double loadFactor)
New instance with sane defaults.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static 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
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Constructor Detail
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CharCharScatterMap
public CharCharScatterMap()
New instance with sane defaults.
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CharCharScatterMap
public CharCharScatterMap(int expectedElements)
New instance with sane defaults.
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CharCharScatterMap
public CharCharScatterMap(int expectedElements, double loadFactor)
New instance with sane defaults.
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Method Detail
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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
public static CharCharScatterMap from(char[] keys, char[] values)
Creates a hash map from two index-aligned arrays of key-value pairs.
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