Pocket Gems Software Engineer, Backend interview questions

After submitting my resume online, I was contacted by a recruiter who collected my background and also my area of interest. After that there were phone interviews set up. I totally had 3 phone interviews. All three were coding interviews. The third interview was bad. I struggled initially with the puzzle, though i solved it finally. I was asked dutch flag. I started with a simpler version of it but the recruiter wanted just wat he expected. Though I explained him i will bring in the modules he wanted, he was not satisfied. And atlast we ran out of time and I was not called back after that.