added another Doboz implementation

fordulo_3/Doboz/DobozFeladat/Box.cs

@@ -0,0 +1,104 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DobozFeladat
+{
+    public class Box
+    {
+        public char Type { get; set; }
+        public bool IsDefected = false;
+        public Box Parent = null;
+        public Box Child = null;
+
+        public Box(char Type)
+        {
+            this.Type = Type;
+        }
+
+        public Box(char Type, bool IsDefected)
+        {
+            this.Type = Type;
+            this.IsDefected = IsDefected;
+        }
+
+        public bool AddedChild(Box newbox)
+        {
+            if (this.IsDefected)
+            {
+                if (this.Type == 'A' && newbox.Type == 'C')
+                {
+                    SetChildParentProperties(newbox);
+                    return true;
+                }
+
+                if (this.Type == 'B')
+                {
+                    return false;
+                }
+            }
+
+            if (this.Child == null)
+            {
+                if (this.Type == 'A' && (newbox.Type == 'B' || newbox.Type == 'C'))
+                {
+                    SetChildParentProperties(newbox);
+                    return true;
+                }
+
+                if (this.Type == 'B' && newbox.Type == 'C')
+                {
+                    SetChildParentProperties(newbox);
+                    return true;
+                }
+            } else
+            {
+                return this.Child.AddedChild(newbox);
+            }
+
+            
+
+            return false;
+
+        }
+
+        public void SetChildParentProperties(Box newbox)
+        {
+            this.Child = newbox;
+            newbox.Parent = this;
+        }
+
+        public bool ReadyForPackaging()
+        {
+            if (this.Child != null)
+            {
+                return this.Child.ReadyForPackaging();
+            }
+
+            if (this.Type == 'B' && this.IsDefected)
+            {
+                return true;
+            }
+
+            if (this.Type == 'C')
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        public string PrintBoxRecursively()
+        {
+            if (this.Child != null)
+            {
+                Console.Write(this.Type);
+                return this.Child.PrintBoxRecursively();
+            }
+            Console.WriteLine(this.Type);
+            return $"{this.Type}";
+        }
+    }
+}