java.lang.Object
org.jgrapht.alg.tour.HamiltonianCycleAlgorithmBase<V,E>
org.jgrapht.alg.tour.RandomTourTSP<V,E>
- Type Parameters:
V
- the graph vertex typeE
- the graph edge type
- All Implemented Interfaces:
HamiltonianCycleAlgorithm<V,E>
public class RandomTourTSP<V,E> extends HamiltonianCycleAlgorithmBase<V,E>
Generate a random tour.
This class generates a random Hamiltonian Cycle. This is a simple unoptimised solution to the Travelling Salesman Problem, or more usefully is a starting point for optimising a tour using TwoOptHeuristicTSP.
- Author:
- Peter Harman, Dimitrios Michail
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Constructor Summary
Constructors Constructor Description RandomTourTSP()
Construct with default random number generatorRandomTourTSP(java.util.Random rng)
Construct with specified random number generator -
Method Summary
Methods inherited from class org.jgrapht.alg.tour.HamiltonianCycleAlgorithmBase
checkGraph, closedVertexListToTour, edgeSetToTour, getSingletonTour, requireNotEmpty, vertexListToTour
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Constructor Details
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RandomTourTSP
public RandomTourTSP()Construct with default random number generator -
RandomTourTSP
public RandomTourTSP(java.util.Random rng)Construct with specified random number generator- Parameters:
rng
- The random number generator
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Method Details
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getTour
Computes a tour using the greedy heuristic.- Parameters:
graph
- the input graph- Returns:
- a tour
- Throws:
java.lang.IllegalArgumentException
- if the graph is not undirectedjava.lang.IllegalArgumentException
- if the graph is not completejava.lang.IllegalArgumentException
- if the graph contains no vertices
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