Tata Consultancy Services (TCS) interview experience Real time questions & tips from candidates to crack your interview

Assistant System Engineer

Tata Consultancy Services (TCS)
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3 rounds | 4 Coding problems

Interview preparation journey

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Journey
I had pursued B.tech in computer science.l did my summer Training from Northern central Railway (Indian Railways) Prayagraj in which I worked on web development. I did 4 months internship in ConsultIT in which I worked on Oracle Apex and learned SQL & Pl/Sql. Then I applied for TCS.
Application story
I saw a job opening on the company's website. I reached out to a lot of people on LinkedIn for referral. One of the employees agreed to give me referral. So, I applied through his referral and then they called me for the interview rounds. The interviews went on smoothly and I got selected.
Why selected/rejected for the role?
I was selected because of my never-give up attitude. I had a different way of approaching questions. I understood the question properly first and then thought of a solution for the question. In this manner, I gave the answers clearly and confidently.
Preparation
Duration: 6 months
Topics: Data Structures, OOPS, Algorithms, Dynamic Programming
Tip
Tip

Tip 1 :Focus more on DSA and CP( Try to solve problems daily)
Tip 2 : Try to make atleast 1 big good project

Application process
Where: Hackerrank
Eligibility: Above 6 CGPA
Resume Tip
Resume tip

Tip 1: Prepare resume consisting of only things you actually have done during your college time.
Tip 2: Only one page is enough and good.

Interview rounds

01
Round
Medium
Online Coding Test
Duration90 mins
Interview date18 Nov 2021
Coding problem1

1. Puzzle

Robin and Williams are playing a game. An unbiased coin is tossed repeatedly. Robin wins as soon as the sequence of tosses HHT appears. Williams wins as soon as the sequence of tosses HTH appears. The game ends when one of them wins. What are the probabilities of winning for each player?

Problem approach

Tip 1 : It was a probability question
Tip 2 : Brush up your math skills

02
Round
Medium
Video Call
Duration60 mins
Interview date24 Nov 2021
Coding problem2

1. Maximum Subarray Sum

Moderate
25m average time
75% success
0/80
Asked in companies
UberTata Consultancy Services (TCS)Dunzo

I used Kadane algorithm here to find subarray with maximum sum. It is a standard question for interview.

Problem approach

I used Kadane algorithm here to find subarray with maximum sum. It is a standard question for interview.

Try solving now

2. Convert Decimal into Irreducible Fraction

Easy
25m average time
75% success
0/40
Asked in companies
HCL TechnologiesTata Consultancy Services (TCS)Microsoft

You are given a real number, 'NUM'. You have to represent this number as an irreducible fraction of the form A/B, where 'A' and 'B' are the numerator and denominator respectively.

A fraction is called irreducible when the greatest common divisor (GCD/HCF) of the numerator and denominator is one.

Example :
Given 'NUM' : 1.75
Irreducible fraction  can be represented as 7/4.

Note that 14/8 = 1.75 as well, but 14/8 is not an irreducible fraction.
Note :
In order to preserve precision, the real number will be given to you in the form of two strings : the integer part, and the fractional part. 

The integer part will contain not more than 8 digits, whereas the fractional part will always contain 8 digits.
Problem approach

I was unable to solve this question in given time. I thought of using decimal precision and other things but not able to solve this.

Try solving now
03
Round
Easy
HR Round
Duration45 mins
Interview date29 Nov 2021
Coding problem1

The interviewer was nice to me. He wants to check my communication skill. In starting, I was fumbling and he gave me time and made me comfortable.

1. Basic HR Questions

Show me what kind of projects did you make( by showing the screen).

Asked me about Myself and My Village.

Problem approach

Tip 1: Try to make understand your project with other people.
Tip 2: Explain easy and simple.
 

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

Skill covered: Programming

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