Class Matrix

java.lang.Object

Matrix

public class Matrix
extends java.lang.Object

A class for working with integer matrices

Author:

rathin

Method Summary

Modifier and Type	Method	Description
static Matrix	add(Matrix a, Matrix b)	Performs a matrix addition
Matrix	cloneMatrix()	Creates a deep copy the current matrix
static Matrix	createMatrix(int rows, int cols, int[][] data, boolean copyData)	Creates a matrix with the provided data
static Matrix	createNullMatrix(int size)	Creates a null (square) matrix of the specified size
static Matrix	createUnitMatrix(int size)	Creates a unit (square) matrix of the specified size
void	displayMatrix()	Prints the current matrix in structured form
static Matrix	multiply(int k, Matrix a)	Multiplies a scalar to a matrix
static Matrix	multiply(Matrix a, Matrix b)	Performs a matrix multiplication
static Matrix	substract(Matrix a, Matrix b)	Performs a matrix subtraction
static Matrix	transpose(Matrix a)	Transposes a given matrix

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

createMatrix

public static Matrix createMatrix(int rows,
                                  int cols,
                                  int[][] data,
                                  boolean copyData)

Creates a matrix with the provided data

Parameters:

rows - The number of rows in the matrix

cols - The number of columns in the matrix

data - A two dimensional integer array containing matrix data

copyData - Specifies whether to copy data from the given array

Returns:

A object of type Matrix

createNullMatrix

public static Matrix createNullMatrix(int size)

Creates a null (square) matrix of the specified size

Parameters:

size - The size of the square matrix

Returns:

A object of type Matrix

createUnitMatrix

public static Matrix createUnitMatrix(int size)

Creates a unit (square) matrix of the specified size

Parameters:

size - The size of the square matrix

Returns:

A object of type Matrix

cloneMatrix

public Matrix cloneMatrix()

Creates a deep copy the current matrix

Returns:

A object of type Matrix with cloned data

displayMatrix

public void displayMatrix()

Prints the current matrix in structured form

add

public static Matrix add(Matrix a,
                         Matrix b)

Performs a matrix addition

Parameters:

a - Matrix A

b - Matrix B

Returns:

A new matrix containing the result of A+B

substract

public static Matrix substract(Matrix a,
                               Matrix b)

Performs a matrix subtraction

Parameters:

a - Matrix A

b - Matrix B

Returns:

A new matrix containing the result of A-B

multiply

public static Matrix multiply(int k,
                              Matrix a)

Multiplies a scalar to a matrix

Parameters:

k - The scalar integer

a - Matrix A

Returns:

A new matrix containing the result of k.A

multiply

public static Matrix multiply(Matrix a,
                              Matrix b)

Performs a matrix multiplication

Parameters:

a - Matrix A

b - Matrix B

Returns:

A new matrix containing the result of AxB

transpose

public static Matrix transpose(Matrix a)

Transposes a given matrix

Parameters:

a - Matrix A

Returns:

The transposed matrix A^T