public void removeFromSolution() {
Entry entry = this.selectFromSolution();
LinkedList<Integer> adjs = new LinkedList<Integer>();
int node = entry.getLabel();
if (!this.graph.adjacencyListEmpty(node)) {
Edge e = this.graph.adjacencyListFirst(node);
do {
adjs.add(e.getNode2());
} while ((e = this.graph.adjacencyNext(node)) != null);
while (adjs.size() > 0) {
int adj = adjs.pop();
// System.out.println("adj: " + adj + " - " + this.candidates_list.size());
int cont = 0;
for (Entry c : this.blockeds_list) {
if ((c.getLabel() == adj) && (this.canEnterCandidate(c))) {
this.blockeds_list.remove(cont);
this.candidates_list.add(c);
break;
} else {
cont++;
}
}
}
}
this.blockeds_list.add(entry);
}
public void removeSelectedFromNeighbors() {
LinkedList<Integer> adjs = new LinkedList<Integer>();
int node = this.selected.getLabel();
// System.out.println("node: " + node + " - " + this.selected_pos + " - " +
// this.neighbors_list.size() );
this.neighbors_list.remove(this.selected_pos);
if (!this.graph.adjacencyListEmpty(node)) {
Edge e = this.graph.adjacencyListFirst(node);
do {
adjs.add(e.getNode2());
} while ((e = this.graph.adjacencyNext(node)) != null);
while (adjs.size() > 0) {
int adj = adjs.pop();
// System.out.println("adj: " + adj + " - " + this.candidates_list.size());
int cont = 0;
for (Entry c : this.blockeds_list) {
if (c.getLabel() == adj) {
this.blockeds_list.remove(cont);
this.candidates_list.add(c);
break;
} else {
cont++;
}
}
}
}
this.blockeds_list.add(this.selected);
}
public LinkedList<Entry> localSearch() {
// Deep copy of a list
this.neighbors_list = new LinkedList<Entry>();
for (Entry e : this.solution_list) {
this.neighbors_list.add(e);
}
int iteration = 0;
while (iteration++ < this.max_iterations) {
this.removeFromSolution();
if (this.selectFromCandidates() != null) {
// this.removeSelectedFromCandidates();
this.removeSelectedFromNeighbors();
System.out.println("ENTER");
}
}
int cost = 0;
for (Entry e : this.neighbors_list) {
cost += e.getCost();
System.out.println(e.toString());
}
System.out.println(cost);
return (this.neighbors_list);
}
public boolean canEnterCandidate(Entry entry) {
LinkedList<Integer> adjs = new LinkedList<Integer>();
int node = entry.getLabel();
if (!this.graph.adjacencyListEmpty(node)) {
Edge e = this.graph.adjacencyListFirst(node);
do {
adjs.add(e.getNode2());
} while ((e = this.graph.adjacencyNext(node)) != null);
while (adjs.size() > 0) {
int adj = adjs.pop();
for (Entry c : this.neighbors_list) {
if (c.getLabel() == adj) {
return false;
}
}
}
}
return true;
}
public Entry selectFromSolution() {
int pos = this.rand.nextInt(this.solution_list.size());
Entry e = this.solution_list.get(pos);
this.total_cost -= e.getCost();
return e;
}
