Orion Infosolutions Android Programmer interview questions

I got call from HR of Orion infosolutions , before 3 years ago she was very polite and very friendly, After some discussion She sechdule my interview on weekends as per my request. When I faced interview then I got immediately score before leave the office. The System task round was very difficult for me It took around one and half hour but I completed it after got some suggestion of interviewer.