cern.colt.matrix.tint.impl
Class DenseLargeIntMatrix2D

java.lang.Object
  cern.colt.PersistentObject
      cern.colt.matrix.AbstractMatrix
          cern.colt.matrix.AbstractMatrix2D
              cern.colt.matrix.tint.IntMatrix2D
                  cern.colt.matrix.tint.impl.WrapperIntMatrix2D
                      cern.colt.matrix.tint.impl.DenseLargeIntMatrix2D

All Implemented Interfaces:

Serializable, Cloneable

public class DenseLargeIntMatrix2D
extends WrapperIntMatrix2D

Dense 2-d matrix holding int elements. First see the package summary and javadoc tree view to get the broad picture.

Implementation:

This data structure allows to store more than 2^31 elements. Internally holds one two-dimensional array, elements[rows][columns]. Note that this implementation is not synchronized.

Time complexity:

O(1) (i.e. constant time) for the basic operations get, getQuick, set, setQuick and size.

Author:

Piotr Wendykier (piotr.wendykier@gmail.com)

See Also:

Serialized Form

Constructor Summary

DenseLargeIntMatrix2D(int rows, int columns)

Method Summary

int[][]	elements() Returns the elements of this matrix.
int	getQuick(int row, int column) Returns the matrix cell value at coordinate [row,column].
IntMatrix2D	like(int rows, int columns) Construct and returns a new empty matrix of the same dynamic type as the receiver, having the specified number of rows and columns.
IntMatrix1D	like1D(int size) Construct and returns a new 1-d matrix of the corresponding dynamic type, entirelly independent of the receiver.
void	setQuick(int row, int column, int value) Sets the matrix cell at coordinate [row,column] to the specified value.

Methods inherited from class cern.colt.matrix.tint.impl.WrapperIntMatrix2D

assign, assign, equals, equals, vectorize, viewColumn, viewColumnFlip, viewDice, viewPart, viewRow, viewRowFlip, viewSelection, viewStrides

Methods inherited from class cern.colt.matrix.tint.IntMatrix2D

aggregate, aggregate, aggregate, aggregate, assign, assign, assign, assign, assign, assign, assign, cardinality, copy, forEachNonZero, get, getMaxLocation, getMinLocation, getNegativeValues, getNonZeros, getPositiveValues, like, set, toArray, toString, viewSelection, viewSelection, viewSorted, zMult, zMult, zMult, zMult, zSum

Methods inherited from class cern.colt.matrix.AbstractMatrix2D

checkShape, checkShape, columns, columnStride, index, rows, rowStride, size, toStringShort

Methods inherited from class cern.colt.matrix.AbstractMatrix

ensureCapacity, isView, trimToSize

Methods inherited from class cern.colt.PersistentObject

clone

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DenseLargeIntMatrix2D

public DenseLargeIntMatrix2D(int rows,
                             int columns)

Method Detail

getQuick

public int getQuick(int row,
                    int column)

Description copied from class: IntMatrix2D

Returns the matrix cell value at coordinate [row,column].

Provided with invalid parameters this method may return invalid objects without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): 0 <= column < columns() && 0 <= row < rows().

Overrides:

getQuick in class WrapperIntMatrix2D

Parameters:

row - the index of the row-coordinate.

column - the index of the column-coordinate.

Returns:

the value at the specified coordinate.

setQuick

public void setQuick(int row,
                     int column,
                     int value)

Description copied from class: IntMatrix2D

Sets the matrix cell at coordinate [row,column] to the specified value.

Provided with invalid parameters this method may access illegal indexes without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): 0 <= column < columns() && 0 <= row < rows().

Overrides:

setQuick in class WrapperIntMatrix2D

Parameters:

row - the index of the row-coordinate.

column - the index of the column-coordinate.

value - the value to be filled into the specified cell.

elements

public int[][] elements()

Description copied from class: IntMatrix2D

Returns the elements of this matrix.

Overrides:

elements in class WrapperIntMatrix2D

Returns:

the elements

like

public IntMatrix2D like(int rows,
                        int columns)

Description copied from class: IntMatrix2D

Construct and returns a new empty matrix of the same dynamic type as the receiver, having the specified number of rows and columns. For example, if the receiver is an instance of type DenseIntMatrix2D the new matrix must also be of type DenseIntMatrix2D, if the receiver is an instance of type SparseIntMatrix2D the new matrix must also be of type SparseIntMatrix2D, etc. In general, the new matrix should have internal parametrization as similar as possible.

Overrides:

like in class WrapperIntMatrix2D

Parameters:

rows - the number of rows the matrix shall have.

columns - the number of columns the matrix shall have.

Returns:

a new empty matrix of the same dynamic type.

like1D

public IntMatrix1D like1D(int size)

Description copied from class: IntMatrix2D

Construct and returns a new 1-d matrix of the corresponding dynamic type, entirelly independent of the receiver. For example, if the receiver is an instance of type DenseIntMatrix2D the new matrix must be of type DenseIntMatrix1D, if the receiver is an instance of type SparseIntMatrix2D the new matrix must be of type SparseIntMatrix1D, etc.

Overrides:

like1D in class WrapperIntMatrix2D

Parameters:

size - the number of cells the matrix shall have.

Returns:

a new matrix of the corresponding dynamic type.