Package dk.jonaslindstrom.ruffini.common.matrices.elements

Class SparseMatrix<E>

java.lang.Object

dk.jonaslindstrom.ruffini.common.matrices.elements.BaseMatrix<E>

dk.jonaslindstrom.ruffini.common.matrices.elements.SparseMatrix<E>

All Implemented Interfaces:

Matrix<E>, java.util.function.BiFunction<Vector<E>,Ring<E>,Vector<E>>

public class SparseMatrix<E>
extends BaseMatrix<E>

This class represents a sparse matrix by only storing the non-zero entries.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SparseMatrix.Builder<F>

Method Summary

Modifier and Type	Method	Description
Matrix<E>	extendTo(int m, int n, E padding)	Returns a new larger matrix of size m x n which has this matrix in the top left corner and pads the rest using the given padding value.
E	get(int i, int j)
int	getHeight()
int	getWidth()
<F> Matrix<F>	map(java.util.function.Function<E,F> f)
Matrix<E>	minor(int i, int j)
Matrix<E>	submatrix(int[] rows, int[] columns)	Returns a new matrix with the given rows and columns from this matrix.
Matrix<E>	submatrix(int r0, int r1, int c0, int c1)	Returns a new matrix of size (r1-r0) x (c1-c0) with rows r0, ..., r1-1 and columns c0, ..., c1-1 from this matrix.
Matrix<E>	transpose()
Matrix<E>	view()	Returns a view of the given matrix.

Methods inherited from class dk.jonaslindstrom.ruffini.common.matrices.elements.BaseMatrix

apply, columns, equals, equals, getColumn, getRow, isSquare, mutable, rows, toString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.function.BiFunction

andThen

Methods inherited from interface dk.jonaslindstrom.ruffini.common.matrices.elements.Matrix

collapseColumns, collapseRows, extendWith, get, stream

Method Details

get

public E get(int i,
 int j)

getHeight

public int getHeight()

getWidth

public int getWidth()

minor

public Matrix<E> minor(int i,
 int j)

transpose

public Matrix<E> transpose()

extendTo

public Matrix<E> extendTo(int m,
 int n,
 E padding)

Description copied from interface: Matrix

Returns a new larger matrix of size m x n which has this matrix in the top left corner and pads the rest using the given padding value.

submatrix

public Matrix<E> submatrix(int[] rows,
 int[] columns)

Description copied from interface: Matrix

Returns a new matrix with the given rows and columns from this matrix. The given arrays are assumed to be sorted.

submatrix

public Matrix<E> submatrix(int r0,
 int r1,
 int c0,
 int c1)

Description copied from interface: Matrix

Returns a new matrix of size (r1-r0) x (c1-c0) with rows r0, ..., r1-1 and columns c0, ..., c1-1 from this matrix.

map

public <F> Matrix<F> map(java.util.function.Function<E,F> f)

view

public Matrix<E> view()

Description copied from interface: Matrix

Returns a view of the given matrix. This does not store any values but instead maps operations to this matrix.