VolkovVA/cod.py

@@ -18,3 +18,39 @@ def ll_insert(head, name, phone):
     new_node['next'] = head
     return new_node
 
+def ll_find(head, name):
+    current = head
+    while current is not None:
+        if current['name']==name:
+            return current['phone']
+        current=current['next']
+        return None
+    
+    
+def ll_delete(head, name):
+    if head is None:
+        return None
+    if head['name']==name:
+        return head['next']
+    
+    current = head 
+    while current['next'] is not None:
+        if current['next']['name'] == name:
+            current['next']==current['next']['next']
+            return head
+   
+        
+def ll_list_all(head):
+    record=[]
+    current=head
+    while current is not None:
+        record.append(current['name'], current['phone'])
+        current=current['next']
+    record.sort(key=lambda x: x[0])
+    return record
+
+    
+            
+    
+        
+