Package com.carrotsearch.hppc
Class ShortByteScatterMap
- java.lang.Object
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- com.carrotsearch.hppc.ShortByteHashMap
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- com.carrotsearch.hppc.ShortByteScatterMap
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- All Implemented Interfaces:
Preallocable
,ShortByteAssociativeContainer
,ShortByteMap
,java.lang.Cloneable
,java.lang.Iterable<ShortByteCursor>
@Generated(date="2021-05-28T03:45:42+0000", value="KTypeVTypeScatterMap.java") public class ShortByteScatterMap extends ShortByteHashMap
Same asShortByteHashMap
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.ShortByteHashMap
ShortByteHashMap.KeysContainer
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Field Summary
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Fields inherited from class com.carrotsearch.hppc.ShortByteHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
Constructors Constructor Description ShortByteScatterMap()
New instance with sane defaults.ShortByteScatterMap(int expectedElements)
New instance with sane defaults.ShortByteScatterMap(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 ShortByteScatterMap
from(short[] keys, byte[] values)
Creates a hash map from two index-aligned arrays of key-value pairs.protected int
hashKey(short key)
Returns a hash code for the given key.-
Methods inherited from class com.carrotsearch.hppc.ShortByteHashMap
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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ShortByteScatterMap
public ShortByteScatterMap()
New instance with sane defaults.
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ShortByteScatterMap
public ShortByteScatterMap(int expectedElements)
New instance with sane defaults.
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ShortByteScatterMap
public ShortByteScatterMap(int expectedElements, double loadFactor)
New instance with sane defaults.
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Method Detail
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hashKey
protected int hashKey(short key)
Description copied from class:ShortByteHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
ShortByteHashMap.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 classShortByteHashMap
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from
public static ShortByteScatterMap from(short[] keys, byte[] values)
Creates a hash map from two index-aligned arrays of key-value pairs.
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