/////////////////////////////////////////////////////////////////////////////////////////////
// These additional solver methods will be implemented as part of the group project.
////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// finds the greedy tour starting from each city and keeps the best (valid) one
/// </summary>
/// <returns>results array for GUI that contains three ints: cost of solution, time spent to find solution, number of solutions found during search (not counting initial BSSF estimate)</returns>
public string[] greedySolveProblem()
{
string[] results = new string[3];
GreedySolver greedy = new GreedySolver(Cities, bssf, results);
bssf = greedy.Solve();
return(results);
}
/// <summary>
/// performs a Branch and Bound search of the state space of partial tours
/// stops when time limit expires and uses BSSF as solution
/// </summary>
/// <returns>results array for GUI that contains three ints: cost of solution, time spent to find solution, number of solutions found during search (not counting initial BSSF estimate)</returns>
public string[] bBSolveProblem()
{
string[] results = new string[3];
//Find a smart starting bssf
GreedySolver greedy = new GreedySolver(Cities, bssf, results);
bssf = greedy.Solve();
BranchAndBoundSolver brancher = new BranchAndBoundSolver(Cities, bssf, results, time_limit);
bssf = brancher.Solve();
return(results);
}