Infosys Power Programmer Interview Questions India 2026

Infosys technical interview FAQ

01What is the recruitment process at Infosys?

The typical Infosys recruitment process has 3 stages: HackWithInfy / InfyTQ qualifying coding round: competitive programming problems → Technical Interview: advanced DSA, algorithm analysis, project deep-dive → HR Interview: relocation, joining timeline.

02What are the interview rounds at Infosys?

Infosys typically conducts 3 interview rounds: Coding Round (90 min): 3 problems: easy, medium, hard. Fully solve 2 to qualify. Trees, graphs, and dynamic programming are frequently tested.; Technical Interview (45–60 min): Advanced DSA at implementation depth. Expect 'write the code for X' not just 'explain X'. Project architecture defence with trade-off reasoning.; HR Interview (15–20 min): Relocation, joining date, compensation discussion. Standard process: focus on the previous two rounds..

03What framework should I use for Infosys technical interviews?

HireStepX recommends the CP-grade prep framework for this type of interview: Full complexity analysis (best, average, worst) → space optimisation trade-offs → alternative algorithms + why you chose this one → corner cases (empty input, MAX_INT, null pointers) → clean code under time pressure.

04Reverse a linked list in O(1) extra space. Then explain when you'd use this in production.

To answer this question well, HireStepX recommends the CP-grade prep approach: Full complexity analysis (best, average, worst) → space optimisation trade-offs → alternative algorithms + why you chose this one → corner cases (empty input, MAX_INT, null pointers) → clean code under time pressure. Ground your answer in a specific real example from your own experience.

05What is the difference between a class and an object? Give an example.

To answer this question well, HireStepX recommends the CP-grade prep approach: Full complexity analysis (best, average, worst) → space optimisation trade-offs → alternative algorithms + why you chose this one → corner cases (empty input, MAX_INT, null pointers) → clean code under time pressure. Ground your answer in a specific real example from your own experience.

06Write a SQL query to find the second-highest salary in a department.

To answer this question well, HireStepX recommends the CP-grade prep approach: Full complexity analysis (best, average, worst) → space optimisation trade-offs → alternative algorithms + why you chose this one → corner cases (empty input, MAX_INT, null pointers) → clean code under time pressure. Ground your answer in a specific real example from your own experience.

07What is normalisation in databases? When would you de-normalise?

To answer this question well, HireStepX recommends the CP-grade prep approach: Full complexity analysis (best, average, worst) → space optimisation trade-offs → alternative algorithms + why you chose this one → corner cases (empty input, MAX_INT, null pointers) → clean code under time pressure. Ground your answer in a specific real example from your own experience.

08What's the difference between a stack and a queue? Give a real-world use case for each.

To answer this question well, HireStepX recommends the CP-grade prep approach: Full complexity analysis (best, average, worst) → space optimisation trade-offs → alternative algorithms + why you chose this one → corner cases (empty input, MAX_INT, null pointers) → clean code under time pressure. Ground your answer in a specific real example from your own experience.