I received a call from a recruitment agency, and after a few days, I got the HackerEarth test link. The questions were easy.

Then I had one more round of online testing. One question was easy, and the other was difficult.

After that, I got a call for the face-to-face round.

I don't remember the HackerEarth question, but one was simple and the other was to count all increasing subsequences of length 3 from a given input integer.

Then, another online coding round happened. One problem was easy, and the other was the water tapping problem. A solution can be found on GeeksforGeeks.

Then, a face-to-face round.

Design a system to store both names and numbers. These contacts should be searchable by both name and number. Suppose a user enters 'am,' then all contacts starting with 'am' should be returned. The same applies to contact numbers. If a user types '99,' then all contacts whose numbers start with '99' should be returned.