public class Short2LongArrayMap extends AbstractShort2LongMap implements java.io.Serializable, java.lang.Cloneable
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.
AbstractShort2LongMap.BasicEntry, AbstractShort2LongMap.BasicEntrySet
Short2LongMap.Entry, Short2LongMap.FastEntrySet
Constructor and Description |
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Short2LongArrayMap()
Creates a new empty array map.
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Short2LongArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Short2LongArrayMap(java.util.Map<? extends java.lang.Short,? extends java.lang.Long> m)
Creates a new empty array map copying the entries of a given map.
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Short2LongArrayMap(short[] key,
long[] value)
Creates a new empty array map with given key and value backing arrays.
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Short2LongArrayMap(short[] key,
long[] value,
int size)
Creates a new array map with given key and value backing arrays, using the given number of elements.
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Short2LongArrayMap(Short2LongMap m)
Creates a new empty array map copying the entries of a given map.
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Modifier and Type | Method and Description |
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void |
clear()
Removes all of the mappings from this map (optional operation).
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Short2LongArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(short k)
Returns true if this function contains a mapping for the specified key.
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boolean |
containsValue(long v)
Returns
true if this map maps one or more keys to the specified value. |
long |
get(short k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
ShortSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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long |
put(short k,
long v)
Adds a pair to the map (optional operation).
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long |
remove(short k)
Removes the mapping with the given key (optional operation).
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Short2LongMap.FastEntrySet |
short2LongEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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int |
size()
Returns the number of key/value mappings in this map.
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LongCollection |
values()
Returns a type-specific-set view of the values of this map.
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equals, hashCode, mergeLong, putAll, toString
defaultReturnValue, defaultReturnValue
compute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsent, computeIfAbsentNullable, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, containsValue, defaultReturnValue, defaultReturnValue, entrySet, forEach, get, getOrDefault, getOrDefault, merge, merge, mergeLong, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace
andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsLong, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort
public Short2LongArrayMap(short[] key, long[] value)
It is responsibility of the caller that the elements of key
are distinct.
key
- the key array.value
- the value array (it must have the same length as key
).public Short2LongArrayMap()
public Short2LongArrayMap(int capacity)
capacity
- the initial capacity.public Short2LongArrayMap(Short2LongMap m)
m
- a map.public Short2LongArrayMap(java.util.Map<? extends java.lang.Short,? extends java.lang.Long> m)
m
- a map.public Short2LongArrayMap(short[] key, long[] value, int size)
It is responsibility of the caller that the first size
elements of key
are distinct.
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
.public Short2LongMap.FastEntrySet short2LongEntrySet()
Short2LongMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Map.entrySet()
so that it returns an ObjectSet
of type-specific entries (the latter makes it possible to
access keys and values with type-specific methods).
short2LongEntrySet
in interface Short2LongMap
Map.entrySet()
public long get(short k)
Short2LongFunction
get
in interface Short2LongFunction
k
- the key.Function.get(Object)
public int size()
Short2LongMap
Integer.MAX_VALUE
elements, returns Integer.MAX_VALUE
.size
in interface Short2LongMap
size
in interface java.util.Map<java.lang.Short,java.lang.Long>
Size64
public void clear()
Short2LongMap
clear
in interface Short2LongMap
clear
in interface java.util.Map<java.lang.Short,java.lang.Long>
Map.clear()
public boolean containsKey(short k)
AbstractShort2LongMap
containsKey
in interface Short2LongFunction
containsKey
in interface Short2LongMap
containsKey
in class AbstractShort2LongMap
k
- the key.key
.Map.containsKey(Object)
public boolean containsValue(long v)
AbstractShort2LongMap
true
if this map maps one or more keys to the specified value.containsValue
in interface Short2LongMap
containsValue
in class AbstractShort2LongMap
Map.containsValue(Object)
public boolean isEmpty()
isEmpty
in interface java.util.Map<java.lang.Short,java.lang.Long>
isEmpty
in class AbstractShort2LongMap
public long put(short k, long v)
Short2LongFunction
put
in interface Short2LongFunction
k
- the key.v
- the value.Function.put(Object,Object)
public long remove(short k)
Short2LongFunction
remove
in interface Short2LongFunction
k
- the key.Function.remove(Object)
public ShortSet keySet()
AbstractShort2LongMap
The view is backed by the set returned by Map.entrySet()
. Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
keySet
in interface Short2LongMap
keySet
in interface java.util.Map<java.lang.Short,java.lang.Long>
keySet
in class AbstractShort2LongMap
Map.keySet()
public LongCollection values()
AbstractShort2LongMap
The view is backed by the set returned by Map.entrySet()
. Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
values
in interface Short2LongMap
values
in interface java.util.Map<java.lang.Short,java.lang.Long>
values
in class AbstractShort2LongMap
Map.values()
public Short2LongArrayMap clone()
This method performs a deep copy of this hash map; the data stored in the map, however, is not cloned. Note that this makes a difference only for object keys.
clone
in class java.lang.Object