Method dfs

java/2092-find-all-people-with-secret.java:27–36

(int src, Map<Integer, List<Integer>> adj, Set<Integer> visit, Set<Integer> secrets)

    }

    private void dfs(int src, Map<Integer, List<Integer>> adj, Set<Integer> visit, Set<Integer> secrets) {
        if (visit.contains(src)) {
            return;
        }
        visit.add(src);
        secrets.add(src);
        for (Integer nei : adj.get(src)) {
            dfs(nei, adj, visit, secrets);
        }
    }

    public static void main(String[] args) {
        Solution solution = new Solution();