cern.colt.list
Class BooleanArrayList

java.lang.Object
  extended by cern.colt.PersistentObject
      extended by cern.colt.list.AbstractCollection
          extended by cern.colt.list.AbstractList
              extended by cern.colt.list.AbstractBooleanList
                  extended by cern.colt.list.BooleanArrayList
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable

public class BooleanArrayList
extends AbstractBooleanList

Resizable list holding boolean elements; implemented with arrays. First see the package summary and javadoc tree view to get the broad picture.

See Also:
Serialized Form

Field Summary
protected  boolean[] elements
          The array buffer into which the elements of the list are stored.
 
Fields inherited from class cern.colt.list.AbstractBooleanList
size
 
Fields inherited from class cern.colt.PersistentObject
serialVersionUID
 
Constructor Summary
BooleanArrayList()
          Constructs an empty list.
BooleanArrayList(boolean[] elements)
          Constructs a list containing the specified elements.
BooleanArrayList(int initialCapacity)
          Constructs an empty list with the specified initial capacity.
 
Method Summary
 void add(boolean element)
          Appends the specified element to the end of this list.
 void beforeInsert(int index, boolean element)
          Inserts the specified element before the specified position into the receiver.
 java.lang.Object clone()
          Returns a deep copy of the receiver.
 BooleanArrayList copy()
          Returns a deep copy of the receiver; uses clone() and casts the result.
 void countSortFromTo(int from, int to)
          Sorts the specified range of the receiver into ascending numerical order (false < true).
 boolean[] elements()
          Returns the elements currently stored, including invalid elements between size and capacity, if any.
 AbstractBooleanList elements(boolean[] 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(java.lang.Object otherObj)
          Compares the specified Object with the receiver.
 boolean forEach(BooleanProcedure procedure)
          Applies a procedure to each element of the receiver, if any.
 boolean get(int index)
          Returns the element at the specified position in the receiver.
 boolean getQuick(int index)
          Returns the element at the specified position in the receiver; WARNING: Does not check preconditions.
 int indexOfFromTo(boolean element, int from, int to)
          Returns the index of the first occurrence of the specified element.
 int lastIndexOfFromTo(boolean element, int from, int to)
          Returns the index of the last occurrence of the specified element.
 void mergeSortFromTo(int from, int to)
          Sorts the specified range of the receiver into ascending order (false < true).
 AbstractBooleanList partFromTo(int from, int to)
          Returns a new list of the part of the receiver between from, inclusive, and to, inclusive.
 void quickSortFromTo(int from, int to)
          Sorts the specified range of the receiver into ascending order (false < true).
 boolean removeAll(AbstractBooleanList other)
          Removes from the receiver all elements that are contained in the specified list.
 void replaceFromToWithFrom(int from, int to, AbstractBooleanList other, int otherFrom)
          Replaces a number of elements in the receiver with the same number of elements of another list.
 boolean retainAll(AbstractBooleanList 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, boolean element)
          Replaces the element at the specified position in the receiver with the specified element.
 void setQuick(int index, boolean element)
          Replaces the element at the specified position in the receiver with the specified element; WARNING: Does not check preconditions.
 void shuffleFromTo(int from, int to)
          Randomly permutes the part of the receiver between from (inclusive) and to (inclusive).
 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 cern.colt.list.AbstractBooleanList
addAllOfFromTo, beforeInsertAllOfFromTo, beforeInsertDummies, binarySearch, binarySearchFromTo, contains, delete, fillFromToWith, indexOf, lastIndexOf, removeFromTo, replaceFromToWithFromTo, replaceFromWith, setSizeRaw, size, times, toInt, toList, toString
 
Methods inherited from class cern.colt.list.AbstractList
addAllOf, beforeInsertAllOf, checkRange, checkRangeFromTo, clear, mergeSort, quickSort, remove, setSize, shuffle, sort
 
Methods inherited from class cern.colt.list.AbstractCollection
isEmpty
 
Methods inherited from class java.lang.Object
finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

elements

protected boolean[] elements
The array buffer into which the elements of the list are stored. The capacity of the list is the length of this array buffer.

Constructor Detail

BooleanArrayList

public BooleanArrayList()
Constructs an empty list.


BooleanArrayList

public BooleanArrayList(boolean[] elements)
Constructs a list containing the specified elements. The initial size and capacity of the list is the length of the array. WARNING: For efficiency reasons and to keep memory usage low, the array is not copied. So if subsequently you modify the specified array directly via the [] operator, be sure you know what you're doing.

Parameters:
elements - the array to be backed by the the constructed list

BooleanArrayList

public BooleanArrayList(int initialCapacity)
Constructs an empty list with the specified initial capacity.

Parameters:
initialCapacity - the number of elements the receiver can hold without auto-expanding itself by allocating new internal memory.
Method Detail

add

public void add(boolean element)
Appends the specified element to the end of this list.

Overrides:
add in class AbstractBooleanList
Parameters:
element - element to be appended to this list.

beforeInsert

public void beforeInsert(int index,
                         boolean element)
Inserts the specified element before the specified position into the receiver. Shifts the element currently at that position (if any) and any subsequent elements to the right.

Overrides:
beforeInsert in class AbstractBooleanList
Parameters:
index - index before which the specified element is to be inserted (must be in [0,size]).
element - element to be inserted.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (index < 0 || index > size()).

clone

public java.lang.Object clone()
Returns a deep copy of the receiver.

Overrides:
clone in class AbstractBooleanList
Returns:
a deep copy of the receiver.

copy

public BooleanArrayList copy()
Returns a deep copy of the receiver; uses clone() and casts the result.

Returns:
a deep copy of the receiver.

countSortFromTo

public void countSortFromTo(int from,
                            int to)
Sorts the specified range of the receiver into ascending numerical order (false < true). The sorting algorithm is a count sort. This algorithm offers guaranteed O(n) performance without auxiliary memory.

Parameters:
from - the index of the first element (inclusive) to be sorted.
to - the index of the last element (inclusive) to be sorted.

elements

public boolean[] elements()
Returns the elements currently stored, including invalid elements between size and capacity, if any. WARNING: For efficiency reasons and to keep memory usage low, the array is not copied. So if subsequently you modify the returned array directly via the [] operator, be sure you know what you're doing.

Overrides:
elements in class AbstractBooleanList
Returns:
the elements currently stored.

elements

public AbstractBooleanList elements(boolean[] elements)
Sets the receiver's elements to be the specified array (not a copy of it). The size and capacity of the list is the length of the array. WARNING: For efficiency reasons and to keep memory usage low, the array is not copied. So if subsequently you modify the specified array directly via the [] operator, be sure you know what you're doing.

Overrides:
elements in class AbstractBooleanList
Parameters:
elements - the new elements to be stored.
Returns:
the receiver itself.

ensureCapacity

public void ensureCapacity(int minCapacity)
Ensures that the receiver can hold at least the specified number of elements without needing to allocate new internal memory. If necessary, allocates new internal memory and increases the capacity of the receiver.

Specified by:
ensureCapacity in class AbstractBooleanList
Parameters:
minCapacity - the desired minimum capacity.

equals

public boolean equals(java.lang.Object otherObj)
Compares the specified Object with the receiver. Returns true if and only if the specified Object is also an ArrayList of the same type, both Lists have the same size, and all corresponding pairs of elements in the two Lists are identical. In other words, two Lists are defined to be equal if they contain the same elements in the same order.

Overrides:
equals in class AbstractBooleanList
Parameters:
otherObj - the Object to be compared for equality with the receiver.
Returns:
true if the specified Object is equal to the receiver.

forEach

public boolean forEach(BooleanProcedure procedure)
Applies a procedure to each element of the receiver, if any. Starts at index 0, moving rightwards.

Overrides:
forEach in class AbstractBooleanList
Parameters:
procedure - the procedure to be applied. Stops iteration if the procedure returns false, otherwise continues.
Returns:
false if the procedure stopped before all elements where iterated over, true otherwise.

get

public boolean get(int index)
Returns the element at the specified position in the receiver.

Overrides:
get in class AbstractBooleanList
Parameters:
index - index of element to return.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (index < 0 || index >= size()).

getQuick

public boolean getQuick(int index)
Returns the element at the specified position in the receiver; WARNING: Does not check preconditions. Provided with invalid parameters this method may return invalid elements without throwing any exception! You should only use this method when you are absolutely sure that the index is within bounds. Precondition (unchecked): index >= 0 && index < size().

Specified by:
getQuick in class AbstractBooleanList
Parameters:
index - index of element to return.

indexOfFromTo

public int indexOfFromTo(boolean element,
                         int from,
                         int to)
Returns the index of the first occurrence of the specified element. Returns -1 if the receiver does not contain this element. Searches between from, inclusive and to, inclusive. Tests for identity.

Overrides:
indexOfFromTo in class AbstractBooleanList
Parameters:
element - element to search for.
from - the leftmost search position, inclusive.
to - the rightmost search position, inclusive.
Returns:
the index of the first occurrence of the element in the receiver; returns -1 if the element is not found.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to || to>=size())).

lastIndexOfFromTo

public int lastIndexOfFromTo(boolean element,
                             int from,
                             int to)
Returns the index of the last occurrence of the specified element. Returns -1 if the receiver does not contain this element. Searches beginning at to, inclusive until from, inclusive. Tests for identity.

Overrides:
lastIndexOfFromTo in class AbstractBooleanList
Parameters:
element - element to search for.
from - the leftmost search position, inclusive.
to - the rightmost search position, inclusive.
Returns:
the index of the last occurrence of the element in the receiver; returns -1 if the element is not found.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to || to>=size())).

mergeSortFromTo

public void mergeSortFromTo(int from,
                            int to)
Sorts the specified range of the receiver into ascending order (false < true). The sorting algorithm is not a mergesort, but rather a countsort. This algorithm offers guaranteed O(n) performance.

Specified by:
mergeSortFromTo in class AbstractList
Parameters:
from - the index of the first element (inclusive) to be sorted.
to - the index of the last element (inclusive) to be sorted.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to || to>=size())).

partFromTo

public AbstractBooleanList partFromTo(int from,
                                      int to)
Returns a new list of the part of the receiver between from, inclusive, and to, inclusive.

Overrides:
partFromTo in class AbstractBooleanList
Parameters:
from - the index of the first element (inclusive).
to - the index of the last element (inclusive).
Returns:
a new list
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to || to>=size())).

quickSortFromTo

public void quickSortFromTo(int from,
                            int to)
Sorts the specified range of the receiver into ascending order (false < true). The sorting algorithm is not a quicksort, but rather a countsort. This algorithm offers guaranteed O(n) performance.

Specified by:
quickSortFromTo in class AbstractList
Parameters:
from - the index of the first element (inclusive) to be sorted.
to - the index of the last element (inclusive) to be sorted.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to || to>=size())).

removeAll

public boolean removeAll(AbstractBooleanList other)
Removes from the receiver all elements that are contained in the specified list. Tests for identity.

Overrides:
removeAll in class AbstractBooleanList
Parameters:
other - the other list.
Returns:
true if the receiver changed as a result of the call.

replaceFromToWithFrom

public void replaceFromToWithFrom(int from,
                                  int to,
                                  AbstractBooleanList other,
                                  int otherFrom)
Replaces a number of elements in the receiver with the same number of elements of another list. Replaces elements in the receiver, between from (inclusive) and to (inclusive), with elements of other, starting from otherFrom (inclusive).

Overrides:
replaceFromToWithFrom in class AbstractBooleanList
Parameters:
from - the position of the first element to be replaced in the receiver
to - the position of the last element to be replaced in the receiver
other - list holding elements to be copied into the receiver.
otherFrom - position of first element within other list to be copied.

retainAll

public boolean retainAll(AbstractBooleanList other)
Retains (keeps) only the elements in the receiver that are contained in the specified other list. In other words, removes from the receiver all of its elements that are not contained in the specified other list.

Overrides:
retainAll in class AbstractBooleanList
Parameters:
other - the other list to test against.
Returns:
true if the receiver changed as a result of the call.

reverse

public void reverse()
Reverses the elements of the receiver. Last becomes first, second last becomes second first, and so on.

Overrides:
reverse in class AbstractBooleanList

set

public void set(int index,
                boolean element)
Replaces the element at the specified position in the receiver with the specified element.

Overrides:
set in class AbstractBooleanList
Parameters:
index - index of element to replace.
element - element to be stored at the specified position.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (index < 0 || index >= size()).

setQuick

public void setQuick(int index,
                     boolean element)
Replaces the element at the specified position in the receiver with the specified element; WARNING: Does not check preconditions. Provided with invalid parameters this method may access invalid indexes without throwing any exception! You should only use this method when you are absolutely sure that the index is within bounds. Precondition (unchecked): index >= 0 && index < size().

Specified by:
setQuick in class AbstractBooleanList
Parameters:
index - index of element to replace.
element - element to be stored at the specified position.

shuffleFromTo

public void shuffleFromTo(int from,
                          int to)
Randomly permutes the part of the receiver between from (inclusive) and to (inclusive).

Overrides:
shuffleFromTo in class AbstractBooleanList
Parameters:
from - the index of the first element (inclusive) to be permuted.
to - the index of the last element (inclusive) to be permuted.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to || to>=size())).

sortFromTo

public void sortFromTo(int from,
                       int to)
Sorts the specified range of the receiver into ascending order. The sorting algorithm is countsort.

Overrides:
sortFromTo in class AbstractList
Parameters:
from - the index of the first element (inclusive) to be sorted.
to - the index of the last element (inclusive) to be sorted.
Throws:
java.lang.IndexOutOfBoundsException - index is out of range (size()>0 && (from<0 || from>to || to>=size())).

trimToSize

public void trimToSize()
Trims the capacity of the receiver to be the receiver's current size. Releases any superfluos internal memory. An application can use this operation to minimize the storage of the receiver.

Overrides:
trimToSize in class AbstractList