Package net.sf.saxon.sort
Class IntToIntHashMap
java.lang.Object
net.sf.saxon.sort.IntToIntHashMap
- All Implemented Interfaces:
Serializable
A hash table that maps int keys to int values.
- Author:
- Dave Hale, Landmark Graphics, Dominique Devienne, Michael Kay: created this class based on IntHashMap
- See Also:
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Constructor Summary
ConstructorsConstructorDescriptionInitializes a map with a capacity of 8 and a load factor of 0,25.IntToIntHashMap
(int capacity) Initializes a map with the given capacity and a load factor of 0,25.IntToIntHashMap
(int capacity, double factor) Constructs a new map with initial capacity, and load factor. -
Method Summary
Modifier and TypeMethodDescriptionvoid
clear()
Clears the map.boolean
find
(int key) Finds a key in the map.int
get
(int key) Gets the value for this key.int
Get the default value used to indicate an unused entryvoid
put
(int key, int value) Adds a key-value pair to the map.boolean
remove
(int key) Removes a key from the map.void
setDefaultValue
(int defaultValue) Set the value to be returned to indicate an unused entryint
size()
Gets the size of the map.
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Constructor Details
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IntToIntHashMap
public IntToIntHashMap()Initializes a map with a capacity of 8 and a load factor of 0,25. -
IntToIntHashMap
public IntToIntHashMap(int capacity) Initializes a map with the given capacity and a load factor of 0,25.- Parameters:
capacity
- the initial capacity.
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IntToIntHashMap
public IntToIntHashMap(int capacity, double factor) Constructs a new map with initial capacity, and load factor. The capacity is the number of keys that can be mapped without resizing the arrays in which keys and values are stored. For efficiency, only a fraction of the elements in those arrays are used. That fraction is the specified load factor. The initial length of the arrays equals the smallest power of two not less than the ratio capacity/factor. The capacity of the map is increased, as necessary. The maximum number of keys that can be mapped is 2^30.- Parameters:
capacity
- the initial capacity.factor
- the load factor.
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Method Details
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setDefaultValue
public void setDefaultValue(int defaultValue) Set the value to be returned to indicate an unused entry -
getDefaultValue
public int getDefaultValue()Get the default value used to indicate an unused entry -
clear
public void clear()Clears the map. -
find
public boolean find(int key) Finds a key in the map.- Parameters:
key
- Key- Returns:
- true if the key is mapped
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get
public int get(int key) Gets the value for this key.- Parameters:
key
- Key- Returns:
- the value, null if not found.
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size
public int size()Gets the size of the map.- Returns:
- the size
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remove
public boolean remove(int key) Removes a key from the map.- Parameters:
key
- Key to remove- Returns:
- true if the value was removed
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put
public void put(int key, int value) Adds a key-value pair to the map.- Parameters:
key
- Keyvalue
- Value
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