added tut07

Tutorium/tut07/src/trees.py

@@ -0,0 +1,36 @@
+@dataclass
+class Node[T]:
+    value: T
+    left: Optional['Node[T]'] = None
+    right: Optional['Node[T]'] = None
+    
+type BTree[T] = Node[T] | None
+
+def preorder[T](tree: BTree[T]):
+    match tree:
+        case Node(value, left, right):
+            print(value)
+            preorder(left)
+            preorder(right)
+        case _:
+            return
+        
+        
+def postorder[T](tree: BTree[T]):
+    match tree:
+        case Node(value, left, right):
+            postorder(left)
+            postorder(right)
+            print(value)
+        case _:
+            return
+        
+        
+def inorder[T](tree: BTree[T]):
+    match tree:
+        case Node(value, left, right):
+            inorder(left)
+            print(value)
+            inorder(right)
+        case _:
+            return