Class CharCharScatterMap

java.lang.Object
com.carrotsearch.hppc.CharCharHashMap
com.carrotsearch.hppc.CharCharScatterMap
All Implemented Interfaces:
CharCharAssociativeContainer, CharCharMap, Preallocable, Cloneable, Iterable<CharCharCursor>

@Generated(date="2024-02-21T00:00:00+0000", value="KTypeVTypeScatterMap.java") public class CharCharScatterMap extends CharCharHashMap
Same as CharCharHashMap 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.

  • Constructor Details

    • CharCharScatterMap

      public CharCharScatterMap()
      New instance with sane defaults.
    • CharCharScatterMap

      public CharCharScatterMap(int expectedElements)
      New instance with sane defaults.
    • CharCharScatterMap

      public CharCharScatterMap(int expectedElements, double loadFactor)
      New instance with sane defaults.
  • Method Details

    • hashKey

      protected int hashKey(char key)
      Description copied from class: CharCharHashMap
      Returns a hash code for the given key.

      The default implementation mixes the hash of the key with CharCharHashMap.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 CharCharHashMap
    • from

      public static CharCharScatterMap from(char[] keys, char[] values)
      Creates a hash map from two index-aligned arrays of key-value pairs.