Method intersect

drg_group/quanzhou_2023/Base.java:26–37

(String[] a,String[] b)

        return new BufferedReader(new InputStreamReader(inputStream,StandardCharsets.UTF_8)).lines();
    }
    public static boolean intersect(String[] a,String[] b){
        if (a!=null && a.length>0 && b!=null && b.length>0){
            for (String x : a){
                for(String y : b){
                    if (x.equals(y)){
                        return true;
                    }
                }
            }
        }
        return false;
    }
    public static Set<String> Intersect(String[] a,String[] b){
        Set<String> s=new HashSet<String>();
        if (a!=null && a.length>0 && b!=null && b.length>0){