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SDE - Intern

BillFree Labs
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2 rounds | 2 Coding problems

Interview preparation journey

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Preparation
Duration: 1 month
Topics: Data Structures, OOPs, Algorithms, Pointers, JavaScript
Tip
Tip

Tip 1 : Listen to the interviewer
Tip 2 : Think before you speak
 

Application process
Where: Referral
Eligibility: None
Resume Tip
Resume tip

Tip 1 : Write everything clearly.
Tip 2 : Don't use too many colors.

Interview rounds

01
Round
Easy
Telephonic
Duration30 minutes
Interview date13 Sep 2020
Coding problem2

I was asked about Polymorphism, which is a concept of OOP. I was given a problem and asked to solve it in as many different ways as possible.

1. DBMS Question

Why is the use of DBMS recommended?

Problem approach

Tip 1 : Explain correctly about the use of DBMS.
Tip 2 : Don't speak about something you don't know.

2. Minimum operations to make strings equal

Moderate
10m average time
80% success
0/80
Asked in companies
Tata Consultancy Services (TCS)BillFree LabsCapegemini Consulting India Private Limited

You have been given two strings A and B consisting of lower case English letters. The task is to count the minimum number of pre-processing moves on the string A required to make it equal to string B after applying below operations:

1. Choose any index i (0 <= i < n) and swap characters a[i]  and b[i].
2. Choose any index i (0 <= i < n) and swap characters a[i]  and a[n-i-1] .
3. Choose any index i (0 <= i < n) and swap characters b[i]  and b[n-i-1] .

In one preprocess move, you can replace a character in A with any other character of the English alphabet.

Note:
1. The number of changes you make after the preprocess move does not matter.
2. You cannot apply to preprocess moves to the String B or make any preprocess moves after the first change is made.
Problem approach

Tip 1: Read the question first
Tip 2: Think before you answer

Try solving now
02
Round
Medium
Video Call
Duration20 minutes
Interview date14 Sep 2020
Coding problem0

Discussion about data structures. The level of the interview was medium to hard.

Here's your problem of the day

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

Skill covered: Programming

Which SQL keyword removes duplicate records from a result set?

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