Interview Experience | On Campus - Sep 2021

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SDE - 1

Jio Platforms Limited

4 rounds | 14 Coding problems

Anonymous

Fresher | Sep 2021

Selected

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1 upvotes

Interview preparation journey

Preparation

Duration: 3 Months

Topics: Company wise coding questions on gfg, operating systems, networking,CPP, Java, spring boot, topic wise coding questions, behavioural questions

Tip

Tip 1 : practise coding a lot
Tip 2 : practise system design interviews
Tip 3 : keep basics of is, networking, cryptography, distributed computing clear
Tip 4 : be stress free during interviews

Application process

Where: Campus

Eligibility: Above 7 CGPA, No year gap in studies

Resume tip

Tip 1 : keep resume small and filled
Tip 2 : mention all experience related to job, maybe need to change according to different jobs
Tip 3 : extra curricular is mostly not required, but can be used as a filler

Interview rounds

Round

Easy

Online Coding Test

Duration90 Minutes

Interview date23 Sep 2021

Problems2

N-th Node From The End

You are given a Singly Linked List of integers. You have to find the N-th node from end.

For Example

If the given list is (1 -> -2 -> 0 -> 4) and N=2:

Problem approach

Iter over list, if n = 1, return element past head, otherwise, iterate untill nth element, remove it and return head of list

Try solving now

Merge k sorted lists

Given 'K' sorted linked lists, each list is sorted in increasing order. You need to merge all these lists into one single sorted list. You need to return the head of the final linked list.

Problem approach

Create a priority queue of heads of linked list. While there are elements in priority queue. Remove smallest head. Add it to another list. Increase the head. If there are more elements in that list. Add the head back to priority queue.

Try solving now

Round

Easy

Video Call

Duration45 Minutes

Interview date23 Jun 2022

Problems3

Puzzle

You are given a multicore server and a distributed queue. You need to fetch elements from queue and store them into db.

Told a solution of running a master thread, which checks the queue and allocats more thread for processing entries.

Problem approach

Tip 1 : ask more questions about the problem
Tip 2 : no solution is best, starting with a simple approach is ok
Tip 3 : cleanly communicate your thinking

Intersection of Two Linked Lists

You are given two Singly Linked List of integers, which are merging at some node of a third linked list.

Your task is to find the data of the node at which merging starts. If ...

Problem approach

First iterate both the lists and find there lengths. Then start at both the heads of list. Move the head of longer list by difference of their lengths. Now move both heads together. As soon as both heads point to same element, we have found the first common element.

Try solving now

Balanced parentheses

Given an integer ‘N’ representing the number of pairs of parentheses, Find all the possible combinations of balanced parentheses with the given number of pairs of parentheses.

Note :

Problem approach

Create a stack.
Iterate over string.
If it is opening bracket in stack, add to stack
Otherwise
If top symbol in stack matches this bracket, remove it
Otherwise
Invalid = true

If stack is not empty
Invalid = true

Try solving now

Round

Medium

Video Call

Duration45 Minutes

Interview date23 Jun 2022

Problems3

Technical Question

What test cases will check for a program which moves files.

Problem approach

Tip 1 : don't stress too much
Tip 2 : keep calm and think about problem

Answer I gave:
1. Checking with a large file
2. Checking moved file for corruption
3. Checking for moved file going disappeared
4. Checking for program stuck

Output Question

What is the output of i = 100; --(i++)

Problem approach

Answer : 99

OS Question

Asked about college projects, course taken online and self study. Asked about books read and what am I doing these days. Questions related to courses taken recently. Questions about distributed computing, nosql as such.

Round

Easy

HR Round

Duration45 minutes

Interview date23 Jun 2022

Problems6

Basic HR Question

How will u explain to your grand mother what job do you do.

Problem approach

I answered " i will say i work on computer and do computer job. That will be enough for her". He seemed ok.

Basic HR Question

Why you want to join jio.

Problem approach

I answered "jio is an Indian company, which brought internet data revolution. I and my family are using jio right now". He seemed happy with we using jio sim.

Basic HR Question

Explain any bad experience you have working with team.

Problem approach

I explained a college project experience with any negativity. He seemed ok with it.

Basic HR Question

Are you ok working in team or alone.

Problem approach

I am ok with both. I have done work alone and in team in past.

Basic HR Question

Explain any last minute hush movement experience.

Problem approach

I told him about our projects and classes are many time last minute hush or sudden. He didn't mind it.