Этап1. смена массива на список

WinFormsApp1/MapWithSetTraktorGeneric.cs

@@ -52,7 +52,7 @@ namespace WinFormsApp1
             Shaking();
             for (int i = 0; i < _setTraktors.Count; i++)
             {
-                var bus = _setTraktors.Get(i);
+                var bus = _setTraktors[i];
                 if (bus != null)
                 {
                     return _map.CreateMap(_pictureWidth, _pictureHeight, bus);
@@ -75,11 +75,11 @@ namespace WinFormsApp1
             int j = _setTraktors.Count - 1;
             for (int i = 0; i < _setTraktors.Count; i++)
             {
-                if (_setTraktors.Get(i) == null)
+                if (_setTraktors[i] == null)
                 {
                     for (; j > i; j--)
                     {
-                        var bus = _setTraktors.Get(j);
+                        var bus = _setTraktors[j];
                         if (bus != null)
                         {
                             _setTraktors.Insert(bus, i);
@@ -121,10 +121,10 @@ namespace WinFormsApp1
 
             for (int i = _setTraktors.Count; i >= 0; i--)
             {
-                _setTraktors.Get(i)?.SetObject(
+                _setTraktors[i]?.SetObject(
                     _pictureWidth - _placeSizeWidth * curWidth - 60,
                     curHeight * _placeSizeHeight + 30, _pictureWidth, _pictureHeight);
-                _setTraktors.Get(i)?.DrawningObject(g);
+                _setTraktors[i]?.DrawningObject(g);
 
                 if (curWidth < widthEl)
                     curWidth++;

WinFormsApp1/SetTraktorGeneric.cs

@@ -9,13 +9,15 @@ namespace WinFormsApp1
     internal class SetTraktorGeneric<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;
         private int TractorPlaces = 0;
 
         public SetTraktorGeneric(int count)
         {
-            _places = new T[count];
+            _maxCount = count;
+            _places = new List<T>(); ;
         }
 
         public int Insert(T tractor)
@@ -25,38 +27,61 @@ namespace WinFormsApp1
 
         public int Insert(T tractor, int position)
         {
-            if (position < 0 || position >= _places.Length || TractorPlaces == _places.Length)
+            if (position < 0 && position > _maxCount)
             {
                 return -1;
             }
-            TractorPlaces++;
+            else
-            while (_places[position] != null)
             {
-                for (int i = _places.Length - 1; i > 0; --i)
+                _places.Insert(position, tractor);
-                {
+                return position;
-                    if (_places[i] == null && _places[i - 1] != null)
-                    {
-                        _places[i] = _places[i - 1];
-                        _places[i - 1] = null;
-                    }
-                }
             }
-            _places[position] = tractor;
-            return position;
         }
 
         public T Remove(int position)
         {
-            if (position < 0 || position >= _places.Length) return null;
+            if (position < 0 || position >= _maxCount)
-            T savedTractor = _places[position];
+            {
-            _places[position] = null;
+                return null;
-            return savedTractor;
+            }
+            var result = _places[position];
+            _places.RemoveAt(position);
+            return result;
         }
 
-        public T Get(int position)
+       
+        public T this[int position]
         {
-            if (position < 0 || position >= _places.Length) return null;
+            get
-            return _places[position];
+            {
+                if (position >= 0 && position < _maxCount && position < Count)
+                {
+                    return _places[position];
+                }
+                else
+                {
+                    return null;
+                }
+            }
+            set
+            {
+                Insert(value, position);
+            }
+        }
+
+        public IEnumerable<T> GetBuses()
+        {
+            foreach (var traktor in _places)
+            {
+                if (traktor != null)
+                {
+                    yield return traktor;
+                }
+                else
+                {
+                    yield break;
+                }
+            }
         }
     }
 }