def trial(trials, bins, items, ants, evaporation_rate, bpp2):
"""
Trials function. Performs n ACO trials
:param trials: amount of trials
:param bins: amount of bins
:param items: amount of items
:param ants: amount of ants
:return: a list with minimal fitness, index of the best path,
best path, bins and execution time.
"""
overall_output = []
for i in range(trials):
b = BinPackingProblem(bins, items, 1, items, bpp2)
aco = ACO(b, ants, evaporation_rate)
aco.iterate()
min_fit, min_index = aco.get_min_fitness()
best_path = aco.get_best_path()
b.path_to_bin(best_path)
output_trial = [
min_fit, min_index, best_path,
b.get_bins(),
aco.get_exec_time()
]
overall_output.append(output_trial)
return overall_output
