Round 1:
In total, there were 17 questions: 15 multiple-choice questions (MCQs) and 2 coding questions. A total of 211 students participated and only 20, including myself—were selected for subsequent rounds.
Before the technical interview, candidates were asked to specify their top 3 preferred programming languages Scala, Java, JavaScript, and C.
Round 2 (first technical interview):
The interviewer was friendly and started with the following questions:
- Self-introduction.
- Explanation of my final-year group project.
- In-depth questions about the project, including my role and the distinctions from existing applications.
- An explanation of the four pillars of object-oriented programming (OOPS).
- There are differences between abstract classes and interfaces.
- Questions related to hashmap.
DSA-related problems, such as
- finding the first subarray with a sum equal to the target
- deleting the last node in a linked list with a target value.
Questions on joins.
- SQL query to determine the second-highest salary in a table.
The interview lasted for an hour, and some candidates, including myself, progressed to the second technical round.
Round 3 (Second Technical Interview):
The second technical interview encompassed the following topics:
- Self-introduction.
- Project explanation, similar to the first round.
- Detailed questions about encapsulation and abstraction, with real-life examples.
- Inquiry into why strings are immutable.
- An in-depth discussion on the internal workings of hashmap.
-
DSA question involving decoding strings.
Input Output
[a2[b]] : abb
2[b3[a]]] : baaabaaa
3[a2[b]] : abcbcabcbcabcbc - Clarification of concepts such as program, process, and thread.
- Definition of deadlock, along with conditions for deadlock avoidance.
- Explanation of semaphores.
- SQL query to determine the number of distinct employees.
The interview spanned 1 hour and 20 minutes, and only three candidates, myself included, progressed to the HR round.