Этап 1. Смена массива на список

Warship/Warship/SetWarshipsGeneric.cs

@@ -9,69 +9,73 @@ namespace Warship
     internal class SetWarshipsGeneric<T>
        where T : class
     {
-        private readonly T[] _places;
+        private readonly List<T> _places;
 
-        public int Count => _places.Length;
+        public int Count => _places.Count;
+
+        private readonly int _maxCount;
 
         public SetWarshipsGeneric(int count)
         {
-            _places = new T[count];
+            _maxCount = count;
+            _places = new List<T>();
         }
 
         public int Insert(T warship)
         {
-            return Insert(warship, 0);
+            if (_places.Count + 1 >= _maxCount)
+                return -1;
+            _places.Insert(0, warship);
+            return 0;
         }
 
         public int Insert(T warship, int position)
         {
-            int EmptyEl = -1;
+            if (position >= _maxCount || position < 0)
-
-            if (position >= Count || position < 0)
                 return -1;
-
+            if (_places.Count + 1 >= _maxCount)
-            if (_places[position] == null)
-            {
-                _places[position] = warship;
-                return 1;
-            }
-
-            else if (_places[position] != null)
-            {
-                for (int i = position + 1; i < Count; i++)
-                    if (_places[i] == null)
-                    {
-                        EmptyEl = i;
-                        break;
-                    }
-
-                if (EmptyEl == -1)
                 return -1;
-
+            _places.Insert(position, warship);
-                for (int i = EmptyEl; i > position; i--)
+            return position;
-                    _places[i] = _places[i - 1];
-            }
-
-            _places[position] = warship;
-            return 1;
         }
 
         public T Remove(int position)
         {
-            if (position >= Count || position < 0 || _places[position] == null)
+            if (position >= _maxCount || position < 0)
                 return null;
 
             T deleted = _places[position];
-            _places[position] = null;
+            _places.RemoveAt(position);
             return deleted;
         }
 
-        public T Get(int position)
+        public T this[int position]
         {
-            if (position >= Count || position < 0)
+            get
+            {
+                if (position < 0 || position >= _maxCount)
                     return null;
-
                 return _places[position];
             }
+            set
+            {
+                if (position < 0 || position >= _maxCount)
+                    Insert(value, position);
+            }
+        }
+        public IEnumerable<T> GetWarships()
+        {
+            foreach (var warship in _places)
+            {
+                if (warship != null)
+                {
+                    yield return warship;
+                }
+                else
+                {
+                    yield break;
+                }
+            }
+        }
     }
 }