FIS interview questions

3 rounds they conducted for me 1st one is offline aptitude 2nd Technicalf2f on java they ask me mainly on oops concepts, strings, annagram program and last but not least collections final round is hr.

process took almost a month so be patient... first round was G.D then 2nd round was aptitude only which was quite difficult (Pure formula based maths) after a week they called us for technical face to face and again after a week there was 2nd face to face interview with manager.. and last round was HR and they hired only 2 candidates