[1] 2-nd version ;)

AgapovaDS/docs/data/1-st/phonebook.py

@@ -109,6 +109,82 @@ def ht_list_all():
     return all_records
 
 
+
+# BTS
+bst_root = None
+
+def bst_create_node(name, phone):
+    return {'name': name, 'phone': phone, 'left': None, 'right': None}
+
+def bst_insert(name, phone):
+    global bst_root
+    if bst_root is None:
+        bst_root = bst_create_node(name, phone)
+        return
+    def insert_rec(node):
+        if name == node['name']:
+            node['phone'] = phone
+        elif name < node['name']:
+            if node['left'] is None:
+                node['left'] = bst_create_node(name, phone)
+            else:
+                insert_rec(node['left'])
+        else:
+            if node['right'] is None:
+                node['right'] = bst_create_node(name, phone)
+            else:
+                insert_rec(node['right'])
+    insert_rec(bst_root)
+
+def bst_find(name):
+    def find_rec(node):
+        if node is None:
+            return None
+        if name == node['name']:
+            return node['phone']
+        elif name < node['name']:
+            return find_rec(node['left'])
+        else:
+            return find_rec(node['right'])
+    return find_rec(bst_root)
+
+def find_min(node):
+    while node['left'] is not None:
+        node = node['left']
+    return node
+
+def bst_delete(name):
+    global bst_root
+    def delete_rec(node):
+        if node is None:
+            return None
+        if name < node['name']:
+            node['left'] = delete_rec(node['left'])
+        elif name > node['name']:
+            node['right'] = delete_rec(node['right'])
+        else:
+            if node['left'] is None:
+                return node['right']
+            if node['right'] is None:
+                return node['left']
+            min_node = find_min(node['right'])
+            node['name'] = min_node['name']
+            node['phone'] = min_node['phone']
+            node['right'] = delete_rec(node['right'])
+        return node
+    bst_root = delete_rec(bst_root)
+
+def bst_list_all():
+    result = []
+    def inorder(node):
+        if node is None:
+            return
+        inorder(node['left'])
+        result.append((node['name'], node['phone']))
+        inorder(node['right'])
+    inorder(bst_root)
+    return result
+
 #Test
 if __name__ == '__main__':
     print("=== Тест связного списка ===")
@@ -127,6 +203,16 @@ if __name__ == '__main__':
     ht_insert("Alina", "345-678")
     ht_insert("Kolia", "111-222")
     print("Все записи (хеш):", ht_list_all())
-    print("Поиск Anna:", ht_find("Kiril"))
+    print("Поиск Kiril:", ht_find("Kiril"))
     ht_delete("Kolia")
     print("После удаления Kolia:", ht_list_all())
+    
+    print("\n=== Тест BST ===")
+    bst_insert("Kiril", "123-456")
+    bst_insert("Pavel", "789-012")
+    bst_insert("Alina", "345-678")
+    bst_insert("Kolia", "111-222")
+    print("Все записи (BST):", bst_list_all())
+    print("Поиск Pavel:", bst_find("Pavel"))
+    bst_delete("Pavel")
+    print("После удаления Pavel:", bst_list_all())