I applied through LinkedIn, and HR contacted me via phone call. He gave me a task to complete, which I had to submit within five days. I completed the task and submitted it in three days. After that, I hadn't heard back from him for three weeks. I emailed him thrice for an update, but never received a reply. One week later, I received a call from the same person, asking me to come to the office for a face-to-face interview.

I went to the Swiggy Bangalore office, where I had to wait for an hour for the interviewer. After that, the interviewer gave me a question similar to checking if two strings are permutations of each other. The interviewer communicated poorly, so I had to ask and verify everything I understood. I initially provided an answer that could be solved using a hashmap, and then I solved it again by generating a checksum for the string (which removed the space complexity introduced by the hashmap). I sensed the interviewer was looking for a specific answer he had studied. When the interview ended (after this one question), I asked for the answer, but he didn't provide it.

I never received a reply from them and didn't attempt to reach out, as I was displeased with both the HR and the interviewer.

TL;DR: Wasted a good day of work at my office.

The question is similar to: "How to check whether two permutations of a string are the same?"