'Coding has over 700 languages', '67% of programming jobs aren’t in the technology industry', 'Coding is behind almost everything that is powered by electricity'
Nagaaro interview experience Real time questions & tips from candidates to crack your interview
SDE - Intern
Nagaaro
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3 rounds | 5 Coding problems
Interview preparation journey
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Preparation
Duration: 6 months
Topics: Data Structures, Algorithms, OOPS, Computer Networks, DBMS, SQL, OS, Python
Tip
Tip

Tip 1 : Properly grasp Data Structures and Algorithms from basics. Cramming problems would not help.
Tip 2 : Try platforms like code-zen for practice. Its a good platform with selected questions. 
Tip 3 : Do at least 2 projects in which you are confident enough to answer anything the interviewer ask.
Tip 4 : Be confident with a smile on face during interviews.

Application process
Where: Campus
Eligibility: 6 CGPA
Resume Tip
Resume tip

Tip 1 : Just one page resume, not more than that for freshers.
Tip 2 : Make it as attractive/catchy as you can. Interviewers don't spend much time while reading your resume.

Interview rounds
01
Round
Medium
Online Coding Interview
Duration120 mintues
Interview date5 Oct 2020
Coding problem3

Aptitude round was in afternoon around 3 pm and every person who has given aptitude round was also given an other chance which was coding round. There was a time gap of 1 hr between two test. both of these went online. Environment was good without any lag. Webcam was on throughout the test. There were 3 coding questions, of which 2 were medium and one was easy. I attempted all of them.

1. Left and Right Rotation of a String
Easy
15m average time
85% success
0/40
Asked in companies
American ExpressAmazonVodafone

You are given a string 'str' and an integer 'D'. Your task is to rotate the given string left (anticlockwise) and right (clockwise) by 'D' units from the starting ...

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Problem approach

I first separate string to words and stored them in array. Then passed every element of array to a function which returns the rotated word. In function I used reverse technique to rotate array and this was enough to pass all test cases. I had done a similar problem in my course(Data Structures and Algorithms in Python) at Coding ninjas which helped me during my coding test.

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2. Height of the Binary Tree
Moderate
10m average time
90% success
0/80
Asked in companies
Morgan StanleyAmazonRootstock Software

You have been given the Inorder Traversal and Level Order Traversal of a Binary Tree of integers. Your task is to calculate the height of the Binary tree without constructing it.

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3. Common Elements
Moderate
35m average time
70% success
0/80
Asked in companies
Tata Consultancy Services (TCS)SAP LabsCognizant

Given two 1-dimensional arrays containing strings of lowercase alphabets, print the elements that are common in both the arrays i.e. the strings that are present in both the arrays.

Note:
...
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02
Round
Medium
Video Call
Duration40 minutes
Interview date7 Oct 2020
Coding problem1

This round was at 12 pm. Interviewer and I greeted each other and then he asked me to explain all the questions I had done during test. He shared screen with my report of test which was having the solutions I typed during coding rounds. It took around 20 minutes to explain all three questions. Interviewer was happy with my explanation. Then he had asked me one coding question and various questions based on my project. I answered him all with a smile.

1. Maximum Subarray Sum
Moderate
35m average time
81% success
0/80
Asked in companies
Thought WorksPaytm (One97 Communications Limited)HCL Technologies

You are given an array 'arr' of length 'n', consisting of integers.


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Problem approach

I explained him first brute force algorithm, which was to generate all sub arrays of array and then find sum from all these with picking the maximum sum from all. Interviewer was not satisfied and he asks for an optimized approach. I then explain him the kadane's algorithm with an example and he was satisfied with the approach and the example given by me. 

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03
Round
Medium
HR Round
Duration30 minutes
Interview date8 Oct 2020
Coding problem1

It was in afternoon. HR called to me to fix a meeting on Microsoft teams. He was very polite with experience of corporate environment.

1. HR Discussion
Problem approach

Tip 1: Confidence is the key you need to be expert in. I was not aware of some things interviewer asked during my interviews. But due to my confidence, he skipped that part. 
Tip 2: Practice Data Structures and Algorithms as much as you can without cramming questions. Coding Ninjas is a really good platform if you are looking for any course.
Tip 3: Be in formals with properly ironed ...

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