Tata Consultancy Services (TCS) interview experience Real time questions & tips from candidates to crack your interview
System Engineer
Tata Consultancy Services (TCS)
2 rounds | 3 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 3 Months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming
Tip 1 : Graph should be on your tips.
Tip 2 : while explaining the solution to interviewer, dont just hop onto the most optimal solution. Start with the brute force one, give the cons of brute force solution, and then go step by step till you reach the optimal solution.
Tip 3 : Improve on your communication skills as well.
Application process
Where: Campus
Eligibility: Above 7 CGPA
Tip 1 : Mention only what is required for your profile, for e.g. do not stress too much on your co curricular stuff. Rather, try explaining more of your technical stuff that is relevant for your job.
Tip 2 : keep it limited to 1 page. And make sure its a pdf and not an image.
Interview rounds
01
Round
Easy
Video Call
Duration45 Minutes
Interview date21 Aug 2022
Coding problem2
1. Swap Two Numbers
Easy
10m average time
0/40
Asked in companies
You are given two numbers 'a' and 'b' as input.
You must swap the values of 'a' and 'b'.
For Example:
Input:
'a' = 8, 'b' = 5
Output:
5 8
Explanation:
Initially, the value of 'a' and 'b' is 8 and 5, respectively.
After swapping, the value of 'a' is 5, and the value of 'b' is 8.
Problem approach
a=a+b;//a=30 (10+20)
b=a-b;//b=10 (30-20)
a=a-b;//a=20 (30-10)
2. Next Greater Element
Easy
10m average time
90% success
0/40
Asked in companies
You are given an array 'a' of size 'n'.
Print the Next Greater Element(NGE) for every element.
The Next Greater Element for an element 'x' is the first element on the right side of 'x' in the array, which is greater than 'x'.
If no greater elements exist to the right of 'x', consider the next greater element as -1.
For example:
Input: 'a' = [7, 12, 1, 20]
Output: NGE = [12, 20, 20, -1]
Explanation: For the given array,
- The next greater element for 7 is 12.
- The next greater element for 12 is 20.
- The next greater element for 1 is 20.
- There is no greater element for 20 on the right side. So we consider NGE as -1.
Problem approach
You are given an array arr of length N. You have to return a list of integers containing the NGE(next greater element) of each element of the given array. The NGE for an element X is the first greater element on the right side of X in the array. Elements for which no greater element exists, consider the NGE as -1.
02
Round
Easy
HR Round
Duration30 Minutes
Interview date21 Aug 2022
Coding problem1
1. Basic HR questions
Why we hire you?
What TCS do?
Where you see yourself in 5 years?
Are you willing to learn new technologies?
What is the most challenging task you have ever done ?
Problem approach
Tip 1 : We patient
Tip 2 : Do not panic
Tip 3 : Always stick with the truth
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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