Method isCyclic

java/0207-course-schedule.java:24–39

(List<List<Integer>> adj, int[] visited, int curr)

    }

    private boolean isCyclic(List<List<Integer>> adj, int[] visited, int curr) {
        if (visited[curr] == 2) {
            return true;
        }

        visited[curr] = 2;
        for (int i = 0; i < adj.get(curr).size(); i++) {
            if (visited[adj.get(curr).get(i)] != 1) {
                if (isCyclic(adj, visited, adj.get(curr).get(i))) {
                    return true;
                }
            }
        }
        visited[curr] = 1;
        return false;
    }
}