Record Class Euclidean2dTspInstance

java.lang.Object

java.lang.Record

io.github.lmores.tsplib.tsp.Euclidean2dTspInstance

All Implemented Interfaces:

BaseInstance, TspInstance

public record Euclidean2dTspInstance(String name, String comment, TsplibFileFormat.EdgeWeightType edgeWeightType, int dimension, double[][] nodeCoords, double[][] displayCoords, int[][] fixedEdges)
extends Record
implements TspInstance

TSP instance with edge weights computed using the 2D euclidean distance.

Constructor Summary

Constructors

Constructor	Description
Euclidean2dTspInstance(String name, String comment, TsplibFileFormat.EdgeWeightType edgeWeightType, int dimension, double[][] nodeCoords, double[][] displayCoords, int[][] fixedEdges)	Creates an instance of a Euclidean2dTspInstance record class.

Method Summary

Modifier and Type	Method	Description
String	comment()	Returns the value of the comment record component.
int	dimension()	Returns the value of the dimension record component.
double[][]	displayCoords()	Returns the value of the displayCoords record component.
TsplibFileFormat.EdgeWeightType	edgeWeightType()	Returns the value of the edgeWeightType record component.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
int[][]	fixedEdges()	Returns the value of the fixedEdges record component.
static Euclidean2dTspInstance	from(TsplibFileData data)
int	getEdgeWeight(int i, int j)	Returns the weight of the edge that joins node i and j.
final int	hashCode()	Returns a hash code value for this object.
String	name()	Returns the value of the name record component.
double[][]	nodeCoords()	Returns the value of the nodeCoords record component.
final String	toString()	Returns a string representation of this record class.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.github.lmores.tsplib.BaseInstance

computeTourValue, materializeEdgeWeightsMatrix

Methods inherited from interface io.github.lmores.tsplib.tsp.TspInstance

hasEdge

Constructor Details

Euclidean2dTspInstance

public Euclidean2dTspInstance(String name,
 String comment,
 TsplibFileFormat.EdgeWeightType edgeWeightType,
 int dimension,
 double[][] nodeCoords,
 double[][] displayCoords,
 int[][] fixedEdges)

Creates an instance of a Euclidean2dTspInstance record class.

Parameters:

name - the value for the name record component

comment - the value for the comment record component

edgeWeightType - the value for the edgeWeightType record component

dimension - the value for the dimension record component

nodeCoords - the value for the nodeCoords record component

displayCoords - the value for the displayCoords record component

fixedEdges - the value for the fixedEdges record component

Method Details

from

public static Euclidean2dTspInstance from(TsplibFileData data)

getEdgeWeight

public int getEdgeWeight(int i,
 int j)

Description copied from interface: BaseInstance

Returns the weight of the edge that joins node i and j.

Specified by:

getEdgeWeight in interface BaseInstance

Parameters:

i - 0-based index of one node of the edge

j - 0-based index of the other node of the edge

Returns:

the weight of the edge

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. Reference components are compared with Objects::equals(Object,Object); primitive components are compared with the compare method from their corresponding wrapper classes.

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

name

public String name()

Returns the value of the name record component.

Specified by:

name in interface BaseInstance

Returns:

the value of the name record component

comment

public String comment()

Returns the value of the comment record component.

Specified by:

comment in interface BaseInstance

Returns:

the value of the comment record component

edgeWeightType

public TsplibFileFormat.EdgeWeightType edgeWeightType()

Returns the value of the edgeWeightType record component.

Specified by:

edgeWeightType in interface BaseInstance

Returns:

the value of the edgeWeightType record component

dimension

public int dimension()

Returns the value of the dimension record component.

Specified by:

dimension in interface BaseInstance

Returns:

the value of the dimension record component

nodeCoords

public double[][] nodeCoords()

Returns the value of the nodeCoords record component.

Specified by:

nodeCoords in interface BaseInstance

Returns:

the value of the nodeCoords record component

displayCoords

public double[][] displayCoords()

Returns the value of the displayCoords record component.

Specified by:

displayCoords in interface BaseInstance

Returns:

the value of the displayCoords record component

fixedEdges

public int[][] fixedEdges()

Returns the value of the fixedEdges record component.

Specified by:

fixedEdges in interface BaseInstance

Returns:

the value of the fixedEdges record component