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

Member of Technical Staff

BYJUS
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2 rounds | 4 Coding problems

Interview preparation journey

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Preparation
Duration: 3 months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming,System Design
Tip
Tip

Tip 1 - Practice at Atleast 250 Questions
Tip 2 - Ex- Do at least 2 projects

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

Tip 1 : Have some projects on resume.
Tip 2 : Do not put false things on resume.

Interview rounds

01
Round
Easy
Video Call
Duration45 minutes
Interview date10 Aug 2022
Coding problem2

1. Delete Kth node From End

Moderate
15m average time
95% success
0/80
Asked in companies
Expedia GroupSquadstackAmazon

You have been given a singly Linked List of 'N' nodes with integer data and an integer 'K'.


Your task is to remove the 'K'th node from the end of the given Linked List and return the head of the modified linked list.


Example:
Input : 1 -> 2 -> 3 -> 4 -> 'NULL'  and  'K' = 2
Output: 1 -> 2 -> 4 -> 'NULL'
Explanation:
After removing the second node from the end, the linked list become 1 -> 2 -> 4 -> 'NULL'.

altImage


Problem approach

Step 1 : Create an another arraylist(ans) and also a boolean visited array.
Step 2 : Traverse from 0 to n.check every ith element that it is kth element of array or not then,Mark every (i+1)th as true in visited array and insert that ith element from given araylist into the ans.
Step 3 : Again Traverse from 0 to n,add every non visited ith element (vis[i]==false) from the given araylist into ans 
Step 4 : convert the ans araylist into Linkedlist and return the head of Linkedlist.

Try solving now

2. Operating System Questions

Their start from basic and went to medium level in OS. They start from to define what is OS and why we use OS, the difference between Process and thread, What are the different kinds of operations that are possible on semaphore,
What is different between main memory and secondary memory, What do you mean by FCFS, What is the difference between paging and segmentation and some more questions also.

Problem approach

Tip 1 : Go through each and every definition in OS
Tip 2 : Answer the question to the point don't talk about irrelevant points
Tip 3 : Prefer Interviewbit, GFG, and any other question and answer pages on internet

02
Round
Easy
Video Call
Duration45 minutes
Interview date10 Aug 2022
Coding problem2

1. Ancestors in Binary Tree

Moderate
20m average time
80% success
0/80
Asked in companies
Morgan StanleyShareChatBYJUS

You are given a binary tree with ‘N’ number of nodes and a node ‘K’.Your task is to print a list of all the ancestors of the given node ‘K’ in reverse order (lowest ancestor first).

A binary tree is a hierarchical data structure in which each node has at most two children.

Example:

Here, for ‘k’ = 7, the output will be 14 12 10.
Problem approach

The idea is to traverse the tree in a post order fashion and search for a given node in the tree. For any node, if the given node is found in either its left subtree or its right subtree, then the current node is an ancestor of it.

Try solving now

2. DBMS Questions

Their start from basic and went to medium level in DBMS. What is DBMS, What are the advantages of DBMS, What is RDBMS, Define a Relation Schema and a Relation, What are the three levels of data abstraction, What is Relational Algebra, What is the E-R model, What are the integrity rules in DBMS and some more questions also.

Problem approach

Tip 1 : Go through each and every definition in DBMS
Tip 2 : Answer the question to the point don't talk about irrelevant points
Tip 3 : Prefer Interviewbit, GFG, and any other question and answer pages on internet

Here's your problem of the day

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

Skill covered: Programming

How do you remove whitespace from the start of a string?

Choose another skill to practice
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