TCS interview experience Real time questions & tips from candidates to crack your interview
System Engineer Specialist
TCS
3 rounds | 5 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 2 months
Topics: Searching Algorithms (primarily Binary Search), Sorting Algorithms, Encryption Algorithm (Not very detailed), OOPs concepts, Data Structures ( Arrays, 2D array, maps)
Tip 1 : Make sure whatever Algo you are learning , you know why the algo is used and what are different use cases.
Tip 2 : Make sure to ask questions to interviewer to gain clarity on whatever questions has been asked
Tip 3 : Be honest if you don’t know the answer to any question and tell the interviewer that you don’t know, so he has a chance to ask more questions that you can answer.
Tip 4 : Prepare a good intro about yourself and about your project, and make sure to prepare for the cross questions regarding you project.
Application process
Where: Campus
Eligibility: Above 60%
Tip 1 : Clearly mention about tour Major Project or the last Project you worked on. You should have a detail knowledge of how your project works.
Tip 2 : Don’t mention additional unnecessary information just to fill up your resume.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration60 minutes
Interview date14 Apr 2019
Coding problem2
There were total three sections. Each section was timed.
Section 1 : Aptitude (math &logic)
Section 2 : English
Section 3 : Coding (2 questions ).
1. Reverse String
Moderate
0/80
Asked in companies
Reverse a string without using inbuilt function
Problem approach
I used a for loop to traverse from the nth index of the given string and appended each character into a new string .
2. Maximum Sum Rectangle
Easy
15m average time
85% success
0/40
Asked in companies
You are given a matrix ‘ARR’ with ‘N’ rows and ‘M’ columns. Your task is to find the maximum sum rectangle in the matrix.
Maximum sum rectangle is a rectangle with the maximum value for the sum of integers present within its boundary, considering all the rectangles that can be formed from the elements of that matrix.
For Example
Consider following matrix:
The rectangle (1,1) to (3,3) is the rectangle with the maximum sum, i.e. 29.
Problem approach
I used two for loops, one for row and one for column.
Used one variable to store the sum after the row loop was over .
Before entering again into the row loop, checked the max sum that was previously obtained.
02
Round
Medium
Face to Face
Duration45 minutes
Interview date14 May 2019
Coding problem2
It was a face to face interview round, two people were taking my interview ( one was 5-7 years experience developer, other was a TL/Manager)
1. Theory questions
- Explain stack and its uses
- Explain linked list and its uses
- Explain array and its uses
- Explain queue and its uses
Problem approach
First, I explained about all the data structures I know.
Then one by one mentioned there use cases ( could not answer all of them )
2. DBMS
Write a SQL query to fetch employee who live a Bangalore and have a management title.
Problem approach
Tip 1 : Used join to combine the two given tables
Tip 2 : Kept talking to interviewer while solving, he helped me.
03
Round
Easy
HR Round
Duration10 minutes
Interview date14 May 2019
Coding problem1
It was an HR round, The HR asked to introduce me.
1. Basic HR Questions
- Introduce yourself
- What are your hobbies?
- What are the skills you achieved by your hobby?
Problem approach
Tip 1 : I took a minute to gather my thoughts.
Tip 2 : I answered honestly
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
What is the best case time complexity of Bubble Sort?
Choose another skill to practice
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