Stony Brook Algorithm Repository

Traveling Salesman Problem


Input Description: A weighted graph \(G\).
Problem: Find the cycle of minimum cost visiting all of the vertices of \(G\) exactly once.

Excerpt from The Algorithm Design Manual: The traveling salesman problem is the most notorious NP-complete problem. This is a function of its general usefulness, and because it is easy to explain to the public at large. Imagine a traveling salesman who has to visit each of a given set of cities by car.

Although the problem arises in transportation applications, its most important applications arise in optimizing the tool paths for manufacturing equipment. For example, consider a robot arm assigned to solder all the connections on a printed circuit board. The shortest tour that visits each solder point exactly once defines the most efficient path for the robot. A similar application arises in minimizing the amount of time taken by a graphics plotter to draw a given figure.


Concorde (rating 10)
TSP solvers (rating 9)
GOBLIN (rating 9)
Keld Helsgaun's traveling salesman (rating 8)
GeneticAlgorithm-TSP (rating 6)
tsp-solver (rating 6)
JGraphT (rating 5)
Netlib (rating 4)

Recommended Books

The Traveling Salesman Problem and Its Variations by G. Gutin and A. Punnen The Traveling Salesman Problem : A Guided Tour of Combinatorial Optimization by E.L. Lawler (Editor) and A. H. Rinnooy-Kan

Related Problems

Convex Hull

Hamiltonian Cycle

Minimum Spanning Tree


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