Refactor minor details

Author: netotz

knapsack_problem/heuristic.py

@@ -32,19 +32,20 @@ def solveInstance(knapsack: Knapsack, index, heuristics):
     '''
     Solve the generated or loaded instance by the specified heuristics.
     '''
-    print(f' {index}° instance:\n   {knapsack.total_items} items\n   {knapsack.capacity} of capacity')
+    print(f'\n  {index}° instance:\n    {knapsack.total_items} items\n    {knapsack.capacity} of capacity')
     for h in heuristics:
         print('\tSolving instance... ', end='')
         start = time()
-        # heuristics take 0 seconds to run:
+        # heuristics take almost 0 seconds to run:
         items = pickItems(knapsack, h)
-        # the measured time is actually just the sum of the values:
+        #? the measured time is actually just the sum of the values:
         value = sum(i.value for i in items)
         end = time()
         print('done\r', end='')
         print('                                    \r', end='')
         print(f'\tTotal value by heuristic {h}: {value}')
 
         measured_time = end - start
+        # only print time when it took 100 milliseconds or more
         if measured_time >= 0.1:
             print(f'\t   Measured time: {measured_time:.3g} seconds')