diff options
| -rw-r--r-- | src/graph.c | 12 | ||||
| -rw-r--r-- | src/graph.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/src/graph.c b/src/graph.c index 5ad439a..f3e7517 100644 --- a/src/graph.c +++ b/src/graph.c @@ -43,6 +43,18 @@ void graph_add_edge(Graph *g, int i, int j) { g->num_edges++; } +void graph_remove_edge(Graph *g, int i, int j) { + LinkedListNode *in_node = linked_list_find( + g->vertices[i].out_neighbours, + &g->vertices[j]); + LinkedListNode *out_node = linked_list_find( + g->vertices[j].in_neighbours, + &g->vertices[j]); + linked_list_remove(g->vertices[i].out_neighbours, in_node); + linked_list_remove(g->vertices[j].in_neighbours, out_node); + g->num_edges--; +} + Graph *graph_read(const char *filename) { FILE *file = fopen(filename, "r"); char line[1024]; diff --git a/src/graph.h b/src/graph.h index 22b4ae5..54d4f7a 100644 --- a/src/graph.h +++ b/src/graph.h @@ -30,6 +30,7 @@ void graph_add_edge(Graph *g, int i, int j); // Returns a pointer to the read graph, or NULL on error. // Post: the caller owns the graph. Graph *graph_read(const char *filename); +void graph_remove_edge(Graph *g, int i, int j); // Deallocates the given graph and all its associated memory. void graph_delete(Graph *g); |