DoubleArrayList

java.lang.Object
- smile.util.DoubleArrayList

All Implemented Interfaces:

java.io.Serializable
```
public final class DoubleArrayList
extends java.lang.Object
implements java.io.Serializable
```
A resizeable, array-backed list of double primitives.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description
`DoubleArrayList()` Constructs an empty list.
`DoubleArrayList(double[] values)` Constructs a list containing the values of the specified array.
`DoubleArrayList(int capacity)` Constructs an empty list with the specified initial capacity.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(double val)` Appends the specified value to the end of this list.
`void`	`add(double[] vals)` Appends an array to the end of this list.
`void`	`clear()` Removes all of the values from this list.
`void`	`ensureCapacity(int capacity)` Increases the capacity, if necessary, to ensure that it can hold at least the number of values specified by the minimum capacity argument.
`double`	`get(int index)` Returns the value at the specified position in this list.
`boolean`	`isEmpty()` Returns true if this list contains no values.
`double`	`remove(int index)` Removes the value at specified index from the list.
`DoubleArrayList`	`set(int index, double val)` Replaces the value at the specified position in this list with the specified value.
`int`	`size()` Returns the number of values in the list.
`java.util.stream.DoubleStream`	`stream()` Returns the stream of the array list.
`double[]`	`toArray()` Returns an array containing all of the values in this list in proper sequence (from first to last value).
`double[]`	`toArray(double[] dest)` Returns an array containing all of the values in this list in proper sequence (from first to last value).
`java.lang.String`	`toString()`
`void`	`trimToSize()` Trims the capacity to be the list's current size.

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

- Constructor Detail
  - DoubleArrayList
```
public DoubleArrayList()
```
    Constructs an empty list.
  - DoubleArrayList
```
public DoubleArrayList(int capacity)
```
    Constructs an empty list with the specified initial capacity.
    
    Parameters:
    
    capacity - the initial size of array list.
  - DoubleArrayList
```
public DoubleArrayList(double[] values)
```
    Constructs a list containing the values of the specified array.
    
    Parameters:
    
    values - the initial values of array list.
- Method Detail
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - stream
```
public java.util.stream.DoubleStream stream()
```
    Returns the stream of the array list.
  - ensureCapacity
```
public void ensureCapacity(int capacity)
```
    Increases the capacity, if necessary, to ensure that it can hold at least the number of values specified by the minimum capacity argument.
    
    Parameters:
    
    capacity - the desired minimum capacity.
  - size
```
public int size()
```
    Returns the number of values in the list.
    
    Returns:
    
    the number of values in the list
  - isEmpty
```
public boolean isEmpty()
```
    Returns true if this list contains no values.
    
    Returns:
    
    true if the list is empty
  - trimToSize
```
public void trimToSize()
```
    Trims the capacity to be the list's current size.
  - add
```
public void add(double val)
```
    Appends the specified value to the end of this list.
    
    Parameters:
    
    val - a value to be appended to this list.
  - add
```
public void add(double[] vals)
```
    Appends an array to the end of this list.
    
    Parameters:
    
    vals - an array to be appended to this list.
  - get
```
public double get(int index)
```
    Returns the value at the specified position in this list.
    
    Parameters:
    
    index - index of the value to return
    
    Returns:
    
    the value at the specified position in this list
  - set
```
public DoubleArrayList set(int index,
                           double val)
```
    Replaces the value at the specified position in this list with the specified value.
    
    Parameters:
    
    index - index of the value to replace
    
    val - value to be stored at the specified position
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the index is out of range (index < 0 || index ≥ size())
  - clear
```
public void clear()
```
    Removes all of the values from this list. The list will be empty after this call returns.
  - remove
```
public double remove(int index)
```
    Removes the value at specified index from the list.
    
    Parameters:
    
    index - index of the value to remove.
    
    Returns:
    
    the value previously stored at specified index
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the index is out of range (index < 0 || index ≥ size())
  - toArray
```
public double[] toArray()
```
    Returns an array containing all of the values in this list in proper sequence (from first to last value). The caller is thus free to modify the returned array.
  - toArray
```
public double[] toArray(double[] dest)
```
    Returns an array containing all of the values in this list in proper sequence (from first to last value). If the list fits in the specified array, it is returned therein. Otherwise, a new array is allocated with the size of this list.
    
    Parameters:
    
    dest - the array into which the values of the list are to be stored, if it is big enough; otherwise, a new array is allocated for this purpose.
    
    Returns:
    
    an array containing the values of the list

Class DoubleArrayList

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DoubleArrayList

DoubleArrayList

DoubleArrayList

Method Detail

toString

stream

ensureCapacity

size

isEmpty

trimToSize

add

add

get

set

clear

remove

toArray

toArray