public static int markComponent(OrientedGraph graph, int startNode, int mark, int oldSize) {
if (graph.getMark(startNode) != 0) {
return oldSize;
}
int size = oldSize + 1;
graph.mark(startNode, mark);
for (int parentIndex : graph.getParents(startNode)) {
size = markComponent(graph, parentIndex, mark, size);
}
return size;
}
public static void topologicalSort(
List<Integer> sortedNodes, OrientedGraph graph, int startNode) {
if (graph.getMark(startNode) != 0) {
return;
}
graph.mark(startNode, 1);
for (int childIndex : graph.getChildren(startNode)) {
topologicalSort(sortedNodes, graph, childIndex);
}
sortedNodes.add(startNode);
}