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java.lang.Objectorg.apache.mahout.math.PersistentObject
org.apache.mahout.math.list.AbstractList
org.apache.mahout.math.list.AbstractLongList
org.apache.mahout.math.list.LongArrayList
public class LongArrayList
Resizable list holding long elements; implemented with arrays.
| Field Summary |
|---|
| Fields inherited from class org.apache.mahout.math.list.AbstractLongList |
|---|
size |
| Constructor Summary | |
|---|---|
LongArrayList()
Constructs an empty list. |
|
LongArrayList(int initialCapacity)
Constructs an empty list with the specified initial capacity. |
|
LongArrayList(long[] elements)
Constructs a list containing the specified elements. |
|
| Method Summary | |
|---|---|
void |
add(long element)
Appends the specified element to the end of this list. |
void |
beforeInsert(int index,
long element)
Inserts the specified element before the specified position into the receiver. |
int |
binarySearchFromTo(long key,
int from,
int to)
Searches the receiver for the specified value using the binary search algorithm. |
Object |
clone()
Returns a deep copy of the receiver. |
LongArrayList |
copy()
Returns a deep copy of the receiver; uses clone() and casts the result. |
long[] |
elements()
Returns the elements currently stored, including invalid elements between size and capacity, if any. |
AbstractLongList |
elements(long[] elements)
Sets the receiver's elements to be the specified array (not a copy of it). |
void |
ensureCapacity(int minCapacity)
Ensures that the receiver can hold at least the specified number of elements without needing to allocate new internal memory. |
boolean |
equals(Object otherObj)
Compares the specified Object with the receiver. |
boolean |
forEach(LongProcedure procedure)
Applies a procedure to each element of the receiver, if any. |
long |
get(int index)
Returns the element at the specified position in the receiver. |
long |
getQuick(int index)
Returns the element at the specified position in the receiver; WARNING: Does not check preconditions. |
int |
indexOfFromTo(long element,
int from,
int to)
Returns the index of the first occurrence of the specified element. |
int |
lastIndexOfFromTo(long element,
int from,
int to)
Returns the index of the last occurrence of the specified element. |
AbstractLongList |
partFromTo(int from,
int to)
Returns a new list of the part of the receiver between from, inclusive, and to,
inclusive. |
boolean |
removeAll(AbstractLongList other)
Removes from the receiver all elements that are contained in the specified list. |
void |
replaceFromToWithFrom(int from,
int to,
AbstractLongList other,
int otherFrom)
Replaces a number of elements in the receiver with the same number of elements of another list. |
boolean |
retainAll(AbstractLongList other)
Retains (keeps) only the elements in the receiver that are contained in the specified other list. |
void |
reverse()
Reverses the elements of the receiver. |
void |
set(int index,
long element)
Replaces the element at the specified position in the receiver with the specified element. |
void |
setQuick(int index,
long element)
Replaces the element at the specified position in the receiver with the specified element; WARNING: Does not check preconditions. |
void |
sortFromTo(int from,
int to)
Sorts the specified range of the receiver into ascending order. |
void |
trimToSize()
Trims the capacity of the receiver to be the receiver's current size. |
| Methods inherited from class org.apache.mahout.math.list.AbstractLongList |
|---|
addAllOf, addAllOf, addAllOfFromTo, beforeInsertAllOfFromTo, beforeInsertDummies, binarySearch, contains, delete, fillFromToWith, indexOf, lastIndexOf, mergeSortFromTo, mergeSortFromTo, quickSortFromTo, quickSortFromTo, removeFromTo, replaceFromToWithFromTo, setSizeRaw, size, times, toArray, toList, toString |
| Methods inherited from class org.apache.mahout.math.list.AbstractList |
|---|
checkRange, checkRangeFromTo, clear, isEmpty, mergeSort, quickSort, remove, setSize, sort |
| Methods inherited from class java.lang.Object |
|---|
finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public LongArrayList()
public LongArrayList(long[] elements)
elements - the array to be backed by the the constructed listpublic LongArrayList(int initialCapacity)
initialCapacity - the number of elements the receiver can hold without auto-expanding itself by allocating new
internal memory.| Method Detail |
|---|
public void add(long element)
add in class AbstractLongListelement - element to be appended to this list.
public void beforeInsert(int index,
long element)
beforeInsert in class AbstractLongListindex - index before which the specified element is to be inserted (must be in [0,size]).element - element to be inserted.
IndexOutOfBoundsException - index is out of range (index < 0 || index > size()).
public int binarySearchFromTo(long key,
int from,
int to)
binarySearchFromTo in class AbstractLongListkey - the value to be searched for.from - the leftmost search position, inclusive.to - the rightmost search position, inclusive.
BinarySearch,
Arrayspublic Object clone()
clone in class AbstractLongListpublic LongArrayList copy()
clone() and casts the result.
public long[] elements()
elements in class AbstractLongListpublic AbstractLongList elements(long[] elements)
elements in class AbstractLongListelements - the new elements to be stored.
public void ensureCapacity(int minCapacity)
ensureCapacity in class AbstractLongListminCapacity - the desired minimum capacity.public boolean equals(Object otherObj)
equals in class AbstractLongListotherObj - the Object to be compared for equality with the receiver.
public boolean forEach(LongProcedure procedure)
forEach in class AbstractLongListprocedure - the procedure to be applied. Stops iteration if the procedure returns false, otherwise
continues.
public long get(int index)
get in class AbstractLongListindex - index of element to return.
IndexOutOfBoundsException - index is out of range (index < 0 || index >= size()).public long getQuick(int index)
getQuick in class AbstractLongListindex - index of element to return.
public int indexOfFromTo(long element,
int from,
int to)
-1 if the receiver does
not contain this element. Searches between from, inclusive and to, inclusive. Tests for
identity.
indexOfFromTo in class AbstractLongListelement - element to search for.from - the leftmost search position, inclusive.to - the rightmost search position, inclusive.
-1 if the element is
not found.
IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to ||
to>=size())).
public int lastIndexOfFromTo(long element,
int from,
int to)
-1 if the receiver does not
contain this element. Searches beginning at to, inclusive until from, inclusive. Tests
for identity.
lastIndexOfFromTo in class AbstractLongListelement - element to search for.from - the leftmost search position, inclusive.to - the rightmost search position, inclusive.
-1 if the element is
not found.
IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to ||
to>=size())).
public AbstractLongList partFromTo(int from,
int to)
from, inclusive, and to,
inclusive.
partFromTo in class AbstractLongListfrom - the index of the first element (inclusive).to - the index of the last element (inclusive).
IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to ||
to>=size())).public boolean removeAll(AbstractLongList other)
removeAll in class AbstractLongListother - the other list.
true if the receiver changed as a result of the call.
public void replaceFromToWithFrom(int from,
int to,
AbstractLongList other,
int otherFrom)
from (inclusive) and to (inclusive), with elements of
other, starting from otherFrom (inclusive).
replaceFromToWithFrom in class AbstractLongListfrom - the position of the first element to be replaced in the receiverto - the position of the last element to be replaced in the receiverother - list holding elements to be copied into the receiver.otherFrom - position of first element within other list to be copied.public boolean retainAll(AbstractLongList other)
retainAll in class AbstractLongListother - the other list to test against.
true if the receiver changed as a result of the call.public void reverse()
reverse in class AbstractLongList
public void set(int index,
long element)
set in class AbstractLongListindex - index of element to replace.element - element to be stored at the specified position.
IndexOutOfBoundsException - index is out of range (index < 0 || index >= size()).
public void setQuick(int index,
long element)
setQuick in class AbstractLongListindex - index of element to replace.element - element to be stored at the specified position.
public void sortFromTo(int from,
int to)
Best case performance: O(N).
sortFromTo in class AbstractListfrom - the index of the first element (inclusive) to be sorted.to - the index of the last element (inclusive) to be sorted.
IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to ||
to>=size())).public void trimToSize()
trimToSize in class AbstractList
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