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