public class Int2LongArrayMap extends AbstractInt2LongMap 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.
AbstractInt2LongMap.BasicEntry, AbstractInt2LongMap.BasicEntrySet
Int2LongMap.Entry, Int2LongMap.FastEntrySet
Constructor and Description |
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Int2LongArrayMap()
Creates a new empty array map.
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Int2LongArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Int2LongArrayMap(int[] key,
long[] value)
Creates a new empty array map with given key and value backing arrays.
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Int2LongArrayMap(int[] 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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Int2LongArrayMap(Int2LongMap m)
Creates a new empty array map copying the entries of a given map.
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Int2LongArrayMap(java.util.Map<? extends java.lang.Integer,? extends java.lang.Long> 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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Int2LongArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(int 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(int k)
Returns the value to which the given key is mapped.
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Int2LongMap.FastEntrySet |
int2LongEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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boolean |
isEmpty() |
IntSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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long |
put(int k,
long v)
Adds a pair to the map (optional operation).
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long |
remove(int k)
Removes the mapping with the given key (optional operation).
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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 Int2LongArrayMap(int[] 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 Int2LongArrayMap()
public Int2LongArrayMap(int capacity)
capacity
- the initial capacity.public Int2LongArrayMap(Int2LongMap m)
m
- a map.public Int2LongArrayMap(java.util.Map<? extends java.lang.Integer,? extends java.lang.Long> m)
m
- a map.public Int2LongArrayMap(int[] 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 Int2LongMap.FastEntrySet int2LongEntrySet()
Int2LongMap
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).
int2LongEntrySet
in interface Int2LongMap
Map.entrySet()
public long get(int k)
Int2LongFunction
get
in interface Int2LongFunction
k
- the key.Function.get(Object)
public int size()
Int2LongMap
Integer.MAX_VALUE
elements, returns Integer.MAX_VALUE
.size
in interface Int2LongMap
size
in interface java.util.Map<java.lang.Integer,java.lang.Long>
Size64
public void clear()
Int2LongMap
clear
in interface Int2LongMap
clear
in interface java.util.Map<java.lang.Integer,java.lang.Long>
Map.clear()
public boolean containsKey(int k)
AbstractInt2LongMap
containsKey
in interface Int2LongFunction
containsKey
in interface Int2LongMap
containsKey
in class AbstractInt2LongMap
k
- the key.key
.Map.containsKey(Object)
public boolean containsValue(long v)
AbstractInt2LongMap
true
if this map maps one or more keys to the specified value.containsValue
in interface Int2LongMap
containsValue
in class AbstractInt2LongMap
Map.containsValue(Object)
public boolean isEmpty()
isEmpty
in interface java.util.Map<java.lang.Integer,java.lang.Long>
isEmpty
in class AbstractInt2LongMap
public long put(int k, long v)
Int2LongFunction
put
in interface Int2LongFunction
k
- the key.v
- the value.Function.put(Object,Object)
public long remove(int k)
Int2LongFunction
remove
in interface Int2LongFunction
k
- the key.Function.remove(Object)
public IntSet keySet()
AbstractInt2LongMap
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 Int2LongMap
keySet
in interface java.util.Map<java.lang.Integer,java.lang.Long>
keySet
in class AbstractInt2LongMap
Map.keySet()
public LongCollection values()
AbstractInt2LongMap
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 Int2LongMap
values
in interface java.util.Map<java.lang.Integer,java.lang.Long>
values
in class AbstractInt2LongMap
Map.values()
public Int2LongArrayMap 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