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-rw-r--r--algos.c34
1 files changed, 27 insertions, 7 deletions
diff --git a/algos.c b/algos.c
index 07c667a..542c8a5 100644
--- a/algos.c
+++ b/algos.c
@@ -23,6 +23,7 @@ void max_clique_a(const graph g, set k, set c, set *mc) {
}
}
+// Voir notice de convention ci-dessous
void max_clique_b(const graph g, set k, set c, set a, set *mc) {
if (is_set_empty(c)) {
if (set_size(k) > set_size(*mc)) {
@@ -31,24 +32,26 @@ void max_clique_b(const graph g, set k, set c, set a, set *mc) {
printf("Found new max clique: "); dump_set(*mc); fflush(stdout);
}
} else {
- set at = copy_set (a);
- while (!(is_set_empty(at))) {
- int x = elt_of_set(at);
- set_remove_ip(x, at);
+ while (!(is_set_empty(a))) {
+ int x = elt_of_set(a);
+ set_remove_ip(x, a);
set k2 = set_add(x, k);
set c2 = set_inter(c, graph_neighbours(g, x));
- set a2 = set_inter(at, graph_neighbours(g, x));
+ set a2 = set_inter(a, graph_neighbours(g, x));
max_clique_b(g,k2, c2, a2, mc);
delete_set(k2);
delete_set(c2);
delete_set(a2);
}
- delete_set(at);
}
}
+// Convention : lors d'un appel de fonction, les set donnés en
+// argument peuvent être modifiés à la guise de l'algorithme
+// Il est donc de la responsabilité de l'appellant de vérifier qu'à
+// chaque appel les sets sont utilisables et cohérents
void max_clique_c(const graph g, set k, set c, set a, set *mc) {
if (is_set_empty(c)) {
if (set_size(k) > set_size(*mc)) {
@@ -57,6 +60,23 @@ void max_clique_c(const graph g, set k, set c, set a, set *mc) {
printf("Found new max clique: "); dump_set(*mc); fflush(stdout);
}
} else {
- //TODO
+ int u = elt_of_set(c); // TODO maximiser C inter Gamma(u)
+ set t = set_diff(a, graph_neighbours(g, u));
+ while (!is_set_empty(t)) {
+ int x = elt_of_set(t);
+
+ set k2 = set_add(x, k);
+ set c2 = set_inter(c, graph_neighbours(g, x));
+ set a2 = set_inter(a, graph_neighbours(g, x));
+ max_clique_c(g, k2, c2, a2, mc);
+ delete_set(a2);
+ delete_set(c2);
+ delete_set(k2);
+
+ set_remove_ip(x, a);
+ delete_set(t);
+ t = set_diff(a, graph_neighbours(g, u));
+ }
+ delete_set(t);
}
}