A Two-Phase Heuristic Algorithm for the Problem of Scheduling and Vehicle Routing for Delivery of Medication to Patients

Algorithm 1

Proposed procedure.

1:  Input vrp_instance, vrp_solution (optional)

2:  Output vrp_solution

3:  If no vrp_solution exists then

4:   vrp_initial(vrp_solution)

5:  end if

6:  Repeat

7:   Repeat

8:    call vrp_simulated_annealing(vrp_solution)

9:   until vrp_solution is not improved

10:  Repeat

11:   call vrp_record_to_record(vrp_solution)

12:  until vrp_solution is not improved

13: until vrp_solution is not improved