My On-Campus Interview Experience at CODINGMART

I recently attended an on-campus placement drive at CodingMart held at Knowledge Institute of Technology.

💼 Role: Software Developer

💰 Salary: 4.00 LPA

Date : 20.01.2026

Interview Process (4 Rounds):

Technical MCQ Round

Focused on DSA concepts

Mostly Time & Space Complexity questions

Example:

• TC of Kadane’s Algorithm
• SC of HashMap

No elimination in this round

Coding Round (Major Elimination Round)

5 sets of questions (each set had 3 problems: Array, HashMap, Linked List, Tree, Graph)

Task:

Solve 1 problem completely (Brute Force + Optimal)

Explain logic for another problem

One of the problems given:

Problem Statement:

• Given an array of integers and a number k, count the number of subarrays that contain exactly k distinct elements.

After Round 1 & 2:

60 students → 20 shortlisted

I was selected for the next round

Technical Interview (Java Focused)

Questions from core Java:

• What is String?
• OOP concepts
• Class vs Object
• Polymorphism
• HashMap vs HashSet
• Array vs ArrayList
• Deep question from HashMap

These were basic to medium-level questions, but unfortunately, I couldn’t answer them well at that moment.

I take this as my mistake and a learning point.

HR Round

Final round after technical filtering

Final Result:

Only 4 students got selected from my college

My Takeaways:

• Fundamentals (especially OOP & core concepts) are very important
• DSA + problem-solving practice is a must
• Communication and confidence matter a lot
• Even easy questions can feel tough if you're not prepared

Even though I got rejected in the 3rd round, it was a great learning experience.

The interviewers were very kind and professional throughout the process.