Tata Consultancy Services (TCS) interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Tata Consultancy Services (TCS)
2 rounds | 4 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 3 months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming
Tip 1 : Practise 5 problems daily from websites like hackerrank, codechef, codeforces
Tip 2 : Participate in codechef, codeforces contest.
Tip 3 : Attend mock interviews and should have good communication skills.
Application process
Where: Campus
Eligibility: Above 7 CGPA
Tip 1 : Maintain atleast 2 different projects, write powerful summary statement.
Tip 2 : Maintain skills relevant to job description, include relevant experience.
Interview rounds
01
Round
Medium
Video Call
Duration45 minutes
Interview date24 Oct 2020
Coding problem3
1. Puzzle Question
How to measure 9 minutes using only a 4 minute and 7 minute hourglass.
Problem approach
Tip 1: Think, listen and understand the problem well
Solution:
Start both timers together.
When the 4 minute timer is done, flip it. 7 minute timer will have 3 minutes left.
When the 7 minute timer is done, the 4 minute timer will have 1 minute left.
Now you can count to 9 minutes by simply leaving the 4 minute to expire (1 min), flip it and let it expire (4 min), flip it again and let it expire (4 min). 1 + 4 + 4 = 9
2. Kth largest element in the unsorted array
Moderate
10m average time
90% success
0/80
Asked in companies
You are given an array consisting of 'N' distinct positive integers and a number 'K'. Your task is to find the kth largest element in the array.
Example:
Consider the array {2,1,5,6,3,8} and 'K' = 3, the sorted array will be {8, 6, 5, 3, 2, 1}, and the 3rd largest element will be 5.
Note:
1) Kth largest element in an array is the kth element of the array when sorted in non-increasing order.
2) All the elements of the array are pairwise distinct.
Problem approach
You are given an array consisting of 'N' distinct positive integers and a number 'K'. Your task is to find the kth largest element in the array.
3. DBMS Question
What are the unary operations in Relational Algebra?
Problem approach
PROJECTION and SELECTION are the unary operations in relational algebra. Unary operations are those operations which use single operands. Unary operations are SELECTION, PROJECTION, and RENAME.
As in SELECTION relational operators are used for example - =,<=,>=, etc.
02
Round
Easy
HR Round
Duration30 minutes
Interview date24 Oct 2020
Coding problem1
1. Basic HR Questions
Tell me about yourself.
Why do you want to work for our company?
What are your greatest strengths and weaknesses?
Why are you looking for a change?
Tell me about the gap in your resume.
How would you rate yourself on a scale of 1 to 10?
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
To make an AI less repetitive in a long paragraph, you should increase:
Choose another skill to practice
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