All Implemented Interfaces:
```
public final class Int2IntMap

                    
```
Simple map for Int to Int relations. Designed for small to medium maps with a low amount of entries (<1000).
As there is no way to specify invalid values, a return value of 0 is given when the mapping does not exist. While it does mostly comply to the MutableMap interface, it is not implemented for performance reasons and for simplicity. It is designed to be used as a drop in replacement for a Map when the key is an Int and the value is an Int.
Implemented as a dual sorted array with binary search for fast lookups. Here is a summary of the performance characteristics:
- Best/Average Case: 𝑂(log 𝑛). Searching is performed using a binary algorithm.
- Best/Average Case: 𝑂(log 𝑛) for the binary search and 𝑂(1) for the insertion without resizing.
- Worst Case: 𝑂(log 𝑛) for the binary search and 𝑂(𝑛) for the insertion with array shifting and resizing.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public final class`	`Int2IntMap.Iter`
`public final class`	`Int2IntMap.Entry`

Field Summary

Fields
Modifier and Type	Field	Description
`private final Integer`	`size`

Constructor Summary

Constructors
Constructor	Description
`Int2IntMap(Integer initialCapacity)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final Integer`	`getSize()`
`final Boolean`	`isEmpty()`
`final Integer`	`get(Integer key)`	Get the value associated with the given key.
`final Unit`	`set(Integer key, Integer value)`
`final Unit`	`put(Integer key, Integer value)`
`final Boolean`	`contains(Integer key)`
`final Boolean`	`containsKey(Integer key)`
`final Boolean`	`containsValue(Integer value)`
`final Integer`	`remove(Integer key)`	Remove the mapping for the given key.
`final Unit`	`trim()`	Trim the internal arrays to the current size.
`final Unit`	`clear()`	Clear the map.
`final Integer`	`getOrPut(Integer key, Function0<Integer> defaultValue)`
`final Unit`	`forEach(Function2<Integer, Integer, Unit> action)`
`final Int2IntMap.Iter`	`iterator()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Int2IntMap
```
Int2IntMap(Integer initialCapacity)
```
- Method Detail
  - getSize
```
 final Integer getSize()
```
  - isEmpty
```
 final Boolean isEmpty()
```
  - get
```
 final Integer get(Integer key)
```
    Get the value associated with the given key.
    
    Returns:
    
    the value associated with the key, or 0 if the key was not present.
  - set
```
 final Unit set(Integer key, Integer value)
```
  - put
```
 final Unit put(Integer key, Integer value)
```
  - contains
```
 final Boolean contains(Integer key)
```
  - containsKey
```
 final Boolean containsKey(Integer key)
```
  - containsValue
```
 final Boolean containsValue(Integer value)
```
  - remove
```
 final Integer remove(Integer key)
```
    Remove the mapping for the given key.
    
    Returns:
    
    the previous value associated with the key, or 0 if the key was not present.
  - trim
```
 final Unit trim()
```
    Trim the internal arrays to the current size. This is useful when the map will not be modified anymore.
    Requires a full copy of the arrays, so it is not recommended to be used frequently. It also means next insertion will require another copy.
  - clear
```
 final Unit clear()
```
    Clear the map. This does not actually discard any data for performance reasons.
  - getOrPut
```
 final Integer getOrPut(Integer key, Function0<Integer> defaultValue)
```
  - forEach
```
 final Unit forEach(Function2<Integer, Integer, Unit> action)
```
  - iterator
```
 final Int2IntMap.Iter iterator()
```

Class Int2IntMap

Nested Class Summary

Field Summary

Constructor Summary

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Int2IntMap

Method Detail

getSize

isEmpty

get

set

put

contains

containsKey

containsValue

remove

trim

clear

getOrPut

forEach

iterator