Package com.carrotsearch.hppc
Class ShortLongScatterMap
- java.lang.Object
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- com.carrotsearch.hppc.ShortLongHashMap
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- com.carrotsearch.hppc.ShortLongScatterMap
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- All Implemented Interfaces:
Preallocable
,ShortLongAssociativeContainer
,ShortLongMap
,java.lang.Cloneable
,java.lang.Iterable<ShortLongCursor>
@Generated(date="2021-05-28T03:45:42+0000", value="KTypeVTypeScatterMap.java") public class ShortLongScatterMap extends ShortLongHashMap
Same asShortLongHashMap
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.ShortLongHashMap
ShortLongHashMap.KeysContainer
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Field Summary
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Fields inherited from class com.carrotsearch.hppc.ShortLongHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
Constructors Constructor Description ShortLongScatterMap()
New instance with sane defaults.ShortLongScatterMap(int expectedElements)
New instance with sane defaults.ShortLongScatterMap(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 ShortLongScatterMap
from(short[] keys, long[] 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.ShortLongHashMap
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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ShortLongScatterMap
public ShortLongScatterMap()
New instance with sane defaults.
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ShortLongScatterMap
public ShortLongScatterMap(int expectedElements)
New instance with sane defaults.
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ShortLongScatterMap
public ShortLongScatterMap(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:ShortLongHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
ShortLongHashMap.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 classShortLongHashMap
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from
public static ShortLongScatterMap from(short[] keys, long[] values)
Creates a hash map from two index-aligned arrays of key-value pairs.
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