public StrongComponents(Graph g) {
this.g = g;
S = new Stack<int>();
id = new int[g.V];
pre = new int[g.V];
low = new int[g.V];
for (var i = 0; i < g.V; i++) {
id[i] = -1;
pre[i] = -1;
low[i] = -1;
}
for (var v = g.V - 1; v >= 0; v--) {
if (pre[v] == -1) {
StrongComponentsRecursive(v);
}
}
}
