Mobileum Senior Java Developer interview questions

Got call through some recruiter. No proper recruitment process followed. Every time I had to call hr to get my feedback on her mobile number. They assume ,you to. give interview and go back . Only if you call them, you get your feedback. 2 days for two F2F rounds taken by 4 people . The interviewers were so weak in DS and algo, that they were themselves unclear about binary search . Seems low salaried and unprofessional employees. First timer were taking interviews. Unprofessional hr always away. Don't waste your time and if you still go ,clear their budget limit.