Udchalo Interview Experience for SDE Intern

Round 1:

Round one was resume shortlisting.
On the basis of resumes, 20 students were shortlisted as per the company’s requirements.

Round 2:

Interview Round-

In this round, I was asked questions on my project.

I mentioned two projects in my resume

• Weather forecasting
• Chat application

Using Nodejs, Express Js, Socket.io

Some basic questions were –

• How did you call APIs to fetch data corresponding to that address?
• What are APIs?
• What is JSON?
• What are REST APIs?
• What is an API call?
• And some basic Java script questions like data types in Javascript and syntax for declaration.

Then some questions of core subjects were asked like-

What is a deadlock in DBMS, SQL QWERY to find the third largest element in an attribute, What are object-oriented programming, constructors, Inheritance, and their types?

After that, I was asked one coding question-

Given a string with spaces.

I need to reverse the string but in Javascript programming language.

In the first attempts, I solved the question using extra space ie stack, and then print the reversed string.

Then he asked me to optimize the space complexity

After one or two minutes I gave him a solution with constant space ie traverse from the end of the string and reverse the words and print.

Ex-

• Input: He is proficient in coding
• Output: coding in proficient is He. 

This Interview round lasted for an hour.

And I got selected as an SDE intern at Udchalo.