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