Pergunta de entrevista da empresa Citi

R1 - Online Test : Includes aptitude , quant , english and 2 coding questions. Coding questions were easy to medium level and remaining 3 sections were quite good , ie, requires practice and knowledge R2 - Technical Interview : Overall medium level. Started with internship exp , internship proj , languages i know , project - mine was CN proj of https file server which was asked in good depth. Then he gave me a DSA problem of no of pairs in an array summing to given target. I gave 3-4 solns , O(n) soln using STL in cpp , but was asked not to use any STL or to give lang independent soln , so I told abt finding maxm ele from array then making array of that size (basically to make searching in O(1) )....but he wasnt satisfied with SC. But I didnt gave up and said I can only get upto O(nlogn) at this moment - using Binary search (ie , I couldnt get to final soln ,...but kept on trying...which was later appreciated). Then he asked me my proficiency in SQL , asked to explain joins and write self join query. This round ended with questions if I had any. R3 - Techno HR : Pretty good round. The interviewer was very cool and charming. She started with my technical interests , internship experience + project , lang known , my second proj (e-commerce website) where i was asked abt challenges , why this proj , explaination in detail , diagrams , further proceedings , etc. Then she asked abt my hobbies - painting , styles of paintings I do , college clubs , events. Round ended with my interest in ML , as even she works in same domain , questions from my side , etc. R4 - HR : Usually CITI doesnt have HR , as per my knowledge ...but that day it was conducted , may be due good competition. I was asked about my interests , internship , why not PPO , school subject interests , my motivation , where do I see myself in 5 years , etc. Then I was asked questions from my side, where I asked many :) Then the round ended. Day starts at 10am upto 7:30pm , and results were declared on the same day.