From 6269fd68d0d9db46c165d351ac06876b5f956c39 Mon Sep 17 00:00:00 2001
From: Joelkurien <joelkurien7@gmail.com>
Date: Mon, 28 Oct 2024 13:46:41 +1100
Subject: [PATCH] Handled type annotation

---
 graphs/johnson_graph.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/graphs/johnson_graph.py b/graphs/johnson_graph.py
index 68029271a..cc8600f6d 100644
--- a/graphs/johnson_graph.py
+++ b/graphs/johnson_graph.py
@@ -14,7 +14,7 @@ class JohnsonGraph:
         self.graph: dict[str, list[tuple[str, int]]] = {}
 
     # add vertices for a graph
-    def add_vertices(self, u: int) -> None:
+    def add_vertices(self, u: str) -> None:
         """
         Adds a vertex `u` to the graph with an empty adjacency list.
         """