Koo Interview Experience for SDE

Round-1

The first round comprised 3 coding questions on the HackerEarth Platform (Test Duration: 1 hour):

In the coding round, questions were of easy to medium level. 

• Find if there is a subarray with a 0 sum

Suggestion: I would suggest doing practice from sites like GeeksforGeeks, etc. as it will give the confidence to solve problems. Solve the questions with a calm mind. Don’t spend too much time on any question if you are not able to do it on the first attempt.

Round-2 (Technical Interview Round-1)
This round was totally based on Data Structures and Algorithms. The interviewer asked me to write the pseudocode of all the 3 questions asked, including one easy question from Array, one medium-level question related to recursion, and one medium question related to graphs.

• Find the number of islands using DFS
• Minimum number of jumps to reach end

Round-3 (Technical Interview Round-2)

• The interviewer asked me about my project and core subjects like operating systems and DBMS.
• Then he asked me to solve a coding question related to two pointer method.
• After that, he asked me to write a JavaScript code of a simple form comprising login and password info.
• Tips: You should know each and every word of your Resume.

Round-4 (HR Round)

• Tell me something about yourself.
• What do you know about Microblogging?
• Little discussions over my extracurricular activities are written in my resume.
• Do you have any Location constraints?
• He also explained the work culture and the company’s future goals.