2-opt
Encyclopedia
In optimization
Optimization (mathematics)
In mathematics, computational science, or management science, mathematical optimization refers to the selection of a best element from some set of available alternatives....

, 2-opt is a simple local search algorithm first proposed by Croes in 1958 for solving the traveling salesman problem. The main idea behind it is to take a route that crosses over itself and reorder it so that it does not.

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