com.carrotsearch.hppc

Class CharScatterSet

java.lang.Object

com.carrotsearch.hppc.AbstractCharCollection

com.carrotsearch.hppc.CharHashSet

com.carrotsearch.hppc.CharScatterSet

All Implemented Interfaces:

CharCollection, CharContainer, CharLookupContainer, CharSet, Preallocable, java.lang.Cloneable, java.lang.Iterable<CharCursor>

@Generated(date="2023-04-24T17:14:46+0800",
           value="KTypeScatterSet.java")
public class CharScatterSet
extends CharHashSet

Same as CharHashSet 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.

See Also:

CharHashSet, HPPC interfaces diagram

Nested Class Summary

Nested classes/interfaces inherited from class com.carrotsearch.hppc.CharHashSet

CharHashSet.EntryIterator

Field Summary

Fields inherited from class com.carrotsearch.hppc.CharHashSet

assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt

Constructor Summary

Constructors

Constructor and Description
CharScatterSet() New instance with sane defaults.
CharScatterSet(int expectedElements) New instance with sane defaults.
CharScatterSet(int expectedElements, double loadFactor) New instance with sane defaults.

Method Summary

Modifier and Type	Method and Description
static CharScatterSet	from(char... elements) Create a set from a variable number of arguments or an array of char.
protected int	hashKey(char key) Returns a hash code for the given key.

Methods inherited from class com.carrotsearch.hppc.CharHashSet

add, addAll, addAll, addAll, allocateBuffers, allocateThenInsertThenRehash, clear, clone, contains, ensureCapacity, equals, forEach, forEach, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, rehash, release, remove, removeAll, removeAll, shiftConflictingKeys, size, toArray, verifyLoadFactor, visualizeKeyDistribution

Methods inherited from class com.carrotsearch.hppc.AbstractCharCollection

removeAll, retainAll, retainAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.carrotsearch.hppc.CharCollection

removeAll, retainAll, retainAll

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

CharScatterSet

public CharScatterSet()

New instance with sane defaults.

CharScatterSet

public CharScatterSet(int expectedElements)

New instance with sane defaults.

CharScatterSet

public CharScatterSet(int expectedElements,
                      double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(char key)

Description copied from class: CharHashSet

Returns a hash code for the given key. The default implementation mixes the hash of the key with CharHashSet.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 class CharHashSet

from

public static CharScatterSet from(char... elements)

Create a set from a variable number of arguments or an array of char. The elements are copied from the argument to the internal buffer.