Update

app.py

@@ -76,7 +76,7 @@ else:
                 "problem_link": st.column_config.LinkColumn("Link", display_text="Open", width='small'),
             },
             height=800,
-            column_order=("problem_id", "acceptance_rate", "problem_link"),
+            column_order=("problem_id", "difficulty", "acceptance_rate", "problem_link"),
             hide_index=True,
         )