Package it.unimi.dsi.fastutil.longs

Class Long2ByteArrayMap

java.lang.Object
it.unimi.dsi.fastutil.longs.AbstractLong2ByteFunction
it.unimi.dsi.fastutil.longs.AbstractLong2ByteMap
it.unimi.dsi.fastutil.longs.Long2ByteArrayMap
All Implemented Interfaces:
Function<Long,​Byte>, Long2ByteFunction, Long2ByteMap, Serializable, Cloneable, Function<Long,​Byte>, LongToIntFunction, Map<Long,​Byte>
public class Long2ByteArrayMap
extends AbstractLong2ByteMap
implements Serializable, Cloneable
A simple, brute-force implementation of a map based on two parallel backing arrays.

The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of pairs: just put them into two parallel arrays and scan linearly to find an item.

See Also:
Serialized Form

  • Constructor Details

    • Long2ByteArrayMap

      public Long2ByteArrayMap​(long[] key, byte[] value)
      Creates a new empty array map with given key and value backing arrays. The resulting map will have as many entries as the given arrays.

      It is responsibility of the caller that the elements of key are distinct.

      Parameters:
      key - the key array.
      value - the value array (it must have the same length as key).

    • Long2ByteArrayMap

      public Long2ByteArrayMap()
      Creates a new empty array map.

    • Long2ByteArrayMap

      public Long2ByteArrayMap​(int capacity)
      Creates a new empty array map of given capacity.
      Parameters:
      capacity - the initial capacity.

    • Long2ByteArrayMap

      public Long2ByteArrayMap​(Long2ByteMap m)
      Creates a new empty array map copying the entries of a given map.
      Parameters:
      m - a map.

    • Long2ByteArrayMap

      public Long2ByteArrayMap​(Map<? extends Long,​? extends Byte> m)
      Creates a new empty array map copying the entries of a given map.
      Parameters:
      m - a map.

    • Long2ByteArrayMap

      public Long2ByteArrayMap​(long[] key, byte[] value, int size)
      Creates a new array map with given key and value backing arrays, using the given number of elements.

      It is responsibility of the caller that the first size elements of key are distinct.

      Parameters:
      key - the key array.
      value - the value array (it must have the same length as key).
      size - the number of valid elements in key and value.

  • Method Details