Update app.py

app.py

@@ -75,21 +75,25 @@ def algorithms_cycle_detection():
         if st.button("Generate Graph"):
             if edges_input:
                 try:
-                    # Parse the input edges, ensuring the format is correct
                     edges = []
+                    # Split input by commas and process each edge
                     for edge in edges_input.split(","):
                         edge = edge.strip()
                         if edge:  # Ensure the string is not empty
-                            # Convert string to tuple (e.g., "(1, 2)" -> (1, 2))
-                            edge_tuple = tuple(map(int, edge[1:-1].split(",")))
-                            edges.append(edge_tuple)
-
-                    # Create the graph
-                    G = nx.DiGraph(edges)
-
-                    st.write("Custom Graph:", G.edges())
-                    plot_cycle_detection(G)
-
+                            # Remove spaces and extra characters, and convert to tuple
+                            edge_tuple = edge.strip("()").split(",")
+                            if len(edge_tuple) == 2:
+                                # Safely convert to integers
+                                edge_tuple = tuple(map(int, edge_tuple))
+                                edges.append(edge_tuple)
+
+                    if edges:
+                        # Create the graph
+                        G = nx.DiGraph(edges)
+                        st.write("Custom Graph:", G.edges())
+                        plot_cycle_detection(G)
+                    else:
+                        st.error("No valid edges provided.")
                 except Exception as e:
                     st.error(f"Error creating the graph: {e}")
             else: