Added Delete Method and updated Indexing Methods

C#/Datastructures/LinkedList.cs

@@ -91,6 +91,36 @@ namespace C_.Datastructures
             };
         }
 
+        public void Insert(int index, T value)
+        {
+            if (index > Count) throw new System.Exception("Error! Index outside of Bounds");
+
+            //Fetch point in list at which item will be added
+            Node<T>? node = Traverse(index - 1);
+            node!.Next = new Node<T> { 
+                Value = value, 
+                Next = node.Next 
+            };
+            Count++;
+        }
+
+        public void Delete(int index)
+        {
+            if (index == 0 && Head != null)
+            {
+                Head = (Node<T>?)Head!.Next;
+                return;
+            }
+
+            Node<T>? node = Traverse(index - 1);
+
+            if (node == null || node.Next == null) throw new System.Exception("Error! Index outside of Bounds");
+
+            node.Next = node.Next.Next;
+            Count--;
+
+        }
+
         private Node<T>? Traverse(){
             //Start at Head of list
             Node<T>? node = Head;
@@ -123,12 +153,12 @@ namespace C_.Datastructures
         {
             //Start at given point in list
             Node<T>? node = Head;
-            if (node != null)
+            if (node != null || n == 0)
             {
                 //Continue to end of list
                 for (int i = 0; i < n; i++)
                 {
-                    if (node.Next == null) return null;
+                    if (node!.Next == null) return null;
                     node = (Node<T>)node.Next;
                 }
             }