Pass a strategy with the explicit interface to a context

Author: nemanjarogic

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/ShippingExecutor.cs

@@ -1,6 +1,7 @@
 using System;
 using BuildingBlocks;
 using StrategyLibrary.ShippingExample.ShippingProviders;
+using StrategyLibrary.ShippingExample.ShippingProviders.Common;
 
 namespace StrategyLibrary.ShippingExample
 {
@@ -39,7 +40,7 @@ public static void Execute()
                 Description = "Xiaomi Mi 10T Pro",
             };
 
-            var fedEx = new FedEx();
+            IShippingProvider fedEx = new FedEx();
             var shippingCostCalculationService = new ShippingCostCalculationService(fedEx);
 
             var price = shippingCostCalculationService.Calculate(order);

src/BehavioralPatterns/Strategy/StrategyLibrary/SortingExample/SortingExecutor.cs

@@ -1,6 +1,7 @@
 using System;
 using BuildingBlocks;
 using StrategyLibrary.SortingExample.Strategies;
+using StrategyLibrary.SortingExample.Strategies.Common;
 
 namespace StrategyLibrary.SortingExample
 {
@@ -10,7 +11,7 @@ public static void Execute()
         {
             ConsoleExtension.WriteSeparator("Sorting example");
 
-            var sortStrategy = new SortByFirstName();
+            ISortStrategy sortStrategy = new SortByFirstName();
             var sortablePersons = new SortablePersons(sortStrategy);
 
             sortablePersons.Add(new Person("Dennis", "Ritchie", 1941));