FrequencyEncoder

```
public class FrequencyEncoder<T>
extends Object
```
Creates an array of T objects order by the occurrence frequency of each object. The most frequently used object is the first one, the least frequently used the last one. If null is added, it is always the first element. Either object identity or object equality can be used to build the array and count the frequency.

Fields
Modifier and Type	Field and Description
`protected boolean`	`containsNull`
`protected org.graalvm.collections.EconomicMap<T,org.graalvm.compiler.core.common.util.FrequencyEncoder.Entry<T>>`	`map`

Constructors
Modifier	Constructor and Description
`protected`	`FrequencyEncoder(org.graalvm.collections.EconomicMap<T,org.graalvm.compiler.core.common.util.FrequencyEncoder.Entry<T>> map)`

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addObject(T object)` Adds an object to the array.
`static <T> FrequencyEncoder<T>`	`createEqualityEncoder()` Creates an encoder that uses `object equality`.
`static <T> FrequencyEncoder<T>`	`createIdentityEncoder()` Creates an encoder that uses object identity.
`T[]`	`encodeAll(T[] allObjects)` Fills the provided array with the added objects.
`int`	`getIndex(T object)` Returns the index of an object in the array.
`int`	`getLength()` Returns the number of distinct objects that have been added, i.e., the length of the array.

protected final org.graalvm.collections.EconomicMap<T,org.graalvm.compiler.core.common.util.FrequencyEncoder.Entry<T>> map

protected FrequencyEncoder(org.graalvm.collections.EconomicMap<T,org.graalvm.compiler.core.common.util.FrequencyEncoder.Entry<T>> map)

Class FrequencyEncoder<T>