Paxcom interview experience Real time questions & tips from candidates to crack your interview

Software Engineer

Paxcom
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4 rounds | 9 Coding problems

Interview preparation journey

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Preparation
Duration: 3 months
Topics: OOPS, Data Structures, DBMS, SQL, Dynamic Programming, Aptitude, Puzzles.
Tip
Tip

Tip 1 : Do OOPS concepts with real life examples.

Tip 2 : In DBMS different types of joins along with their SQL queries should be mastered.

Tip 3 : Prepare at least 2 projects.

Application process
Where: Campus
Eligibility: Above 7 CGPA
Resume Tip
Resume tip

Tip 1 : Mention at least 2 projects in your resume.

Tip 2 : Mention things related to Web Development if any.

Interview rounds

01
Round
Easy
Online Coding Interview
Duration90 minutes
Interview date9 Jul 2021
Coding problem2

1. Java Question

Convert Snake Case string to Camel Case in Java.

Problem approach

I followed the method of traversal and reached the solution.

2. Count Special Palindromic Substrings

Moderate
30m average time
70% success
0/80
Asked in companies
BarclaysAccolitePaxcom

You are given a string 'STR'. Your task is to count the number of special palindromic substrings of size greater than 1 that the given string contains. A substring is said to be a special palindrome in the following two cases:

If all the characters in the substring are the same.

If the length of the substring is odd and only the middle element is different, while all the other characters are the same. 
Example:
“aba” is a special palindrome, while “abaa” is not
Problem approach

Step 1 : First I used recursion to solve this question but it gave time complexity error.
Step 2 : To resolve this I applied Dynamic Programming into my solution.

Try solving now
02
Round
Medium
Telephonic
Duration30 minutes
Interview date13 Jul 2021
Coding problem3

It was a telephonic call.

1. DBMS

Was given 2 tables and asked to apply left and inner join on them.

Problem approach

Tip 1 : Practice Joins and SQL.

2. Puzzle Question

There is a room with a door (closed) and three light bulbs. Outside the room, there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door you can’t change them. Identify each switch with its bulb. All bulbs are in working condition.

3. Puzzle Question

Give fifty words that don't have the the alphabet 'a' in them.

Problem approach

The answer is numbering from one to fifty.

03
Round
Medium
Video Call
Duration30 minutes
Interview date16 Jul 2021
Coding problem2

The interview started with the interviewer going through my resume in detail. I was asked to explain one of my projects in detail. Then it went onto some OOPs concepts and their real life examples and DBMS.

1. DBMS

Was asked to perform right join, left join and inner join on two tables. And then to compared the number of rows in the output.

2. Puzzle Question

How to multiply two numbers without using the multiply operator.

Problem approach

My solution was to add the number multiple times inside a for loop.

04
Round
Medium
HR Round
Duration20 minutes
Interview date23 May 2022
Coding problem2

1. Basic HR Question

Where do I see myself in the next 5 years?


 

2. Basic HR Question

Asked about my preferred job location and the reason behind it.


 

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 recursion?

Choose another skill to practice
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