1 Online Coding Interview/ Telephonic Interview Candidates are usually asked to solve 3 questions within a time duration of 60mins. Problems usually featured are based on recursion, strings, trees and graphs.
Technical Interviews mostly starts off with Data Structure and Algorithmic problems. There would be a machine coding round where a problem is given and you are expected to come up a complete working code with error handling within approx 90mins followed by a discussion on approach of question in Machine coding Round.
Onsite Interview: questions pertaining to data structures and algorithms, design questions and culturally fit questions are usually covered.
Manager Round this round usually covers problems of DS and algos specifically from trees, graphs and linked lists. You would also be asked questions about projects worked on and technologies used in them.
HR Interview features questions about one's self, strength and weakness, discussion about your role in the company.
Where to Prepare
Coding rounds: Material in the programming section of InterviewBit is pretty comprehensive. For your reference, the section below has some of the questions which are frequently asked in Flipkart's Interview. Make sure to try and solve most of them.