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Facebook Associate Software Engineer Interview Questions and Answers

Updated 4 Jul 2022

Facebook Associate Software Engineer Interview Experiences

1 interview found

I appeared for an interview in Jun 2022.

Round 1 - Technical 

(1 Question)

  • Q1. Focus on algorithms - trees, graphs. Questions on improving algorithm performance. Converting algorithm to code.

Interview Preparation Tips

Interview preparation tips for other job seekers - Deep Study - Graph data structure, Tree Data Structure, and solve as many problems as you can on Graph and Tree

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When HR’s Chinese English made me drop the interview!
So, I talked to the HR yesterday about the interview. I asked Please send me the location But their English… bro I was shocked! It was like talking to someone jisne english nahi kuch ar hi seekh liya ho, if the HR’s English is this I can only imagine the rest of the company I decided to drop the interview with this chinese english😶‍🌫️
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I appeared for an interview before Sep 2020.

Round 1 - Coding Test 

Round duration - 90 minutes
Round difficulty - Easy

This round was held during university hours and consisted of 2 coding questions.

Round 2 - Face to Face 

(1 Question)

Round duration - 120 minutes
Round difficulty - Easy

Make sure you do no cutting and are clear about the approach you'd be following. 
 

  • Q1. What is the running median of an input stream?
  • Ans. 

    Running median of an input stream is the median value of the numbers seen so far in a continuous stream of data.

    • Maintain two heaps - a max heap for the lower half of the numbers and a min heap for the upper half.

    • Keep the number of elements in the two heaps balanced or differ by at most 1.

    • If the total number of elements is odd, the median is the root of the max heap. If even, it is the average of the roots of the two he...

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI completed Electronics & Communication Engineering from TIET - Thapar Institute of Engineering And Technology. I applied for the job as SDE - 1 in HyderabadEligibility criteria 7 CGPA Amazon interview preparation:Topics to prepare for the interview - Data Structures and Algorithms, Java, Object-Oriented Programming System, System Design, Operating System.Time required to prepare for the interview - 2 MonthsInterview preparation tips for other job seekers

Prepare for company-wise interview questions according to the company in which you are applying. Try to write the code yourself and if got stuck in between then take help from the internet. I recommend you Codezen of Coding Ninjas for practicing Data Structures and Algorithms based questions.

Application resume tips for other job seekers

Be sure 100% of what you write in your resume and prepare for that before the interview what is written on resume.

Final outcome of the interviewSelected

Skills evaluated in this interview

Associate Software Engineer Interview Questions Asked at Other Companies

asked in Accenture
Q1. Triplets with Given Sum Problem Given an array or list ARR consis ... read more
Q2. Intersection of Two Arrays II Given two integer arrays ARR1 and A ... read more
asked in Accenture
Q3. Write a function to determine if a given string is a valid passwo ... read more
asked in Clarivate
Q4. Best Time to Buy and Sell Stock II Problem Statement Given the st ... read more
asked in CGI Group
Q5. Frog Jump Problem Statement A frog is positioned on the first ste ... read more

I appeared for an interview before Dec 2015.

Interview Questionnaire 

2 Questions

  • Q1. 1 question from basic data structures and algorithms The question was similar to the one in the given link- -----/
  • Ans. 

    Understanding basic data structures and algorithms is crucial for software development and problem-solving.

    • Data structures like arrays, linked lists, stacks, and queues are fundamental for organizing data.

    • Algorithms such as sorting (e.g., quicksort, mergesort) and searching (e.g., binary search) are essential for efficient data manipulation.

    • Example: An array can store a list of numbers, while a linked list can efficien...

  • Answered by AI
  • Q2. Why do you want to join the company?
  • Ans. 

    I am excited to join the company because of its reputation for innovation and commitment to employee growth.

    • I am impressed by the company's track record of developing cutting-edge software solutions.

    • I appreciate the company's focus on fostering a culture of learning and development.

    • I am excited about the opportunity to work with a talented team of developers and contribute to the company's success.

    • I believe that the co...

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: Resumes were shortlisted with a short aptitude round where we are asked basic questions about databases, basic programming(C and C ++ questions)

Round: Technical Interview
Experience: The questions were asked were simple - related to arrays and data structures. Some questions were asked regarding my resume and projects.
Tips: Be thorough with geeksForGeeks, and your projects.

Round: HR Interview
Experience: I told him how I found the story of the founder of Infoedge very inspiring.
Tips: This round should be more simpler , be prepared with why you want to join the company and general HR questions

Skills: Basic C/C++, Programming Skills In Any Language Like C
College Name: IIIT Allahabad

Interview Preparation Tips

Round: Technical Interview
Experience: Ques will be based on arrays( duplicate element, missing element in 1 to n array), link list(reverse, remove loop, middle node etc), Hashing, sql join, normalisation, indexing in sql, singlton pattern and sorting and searching.
Tips: Focus will remain on algorithms. Whatever program they will ask to write, they will also ask to optimize the solution.

Skill Tips: Puzzle on mislabled jar, odd weight ball. As I had exp in Java, so some more que on Java, java script and web technology. All you need in interview is to be confident and show your interest in web domain.
Skills: Java, Data structure, Algorithm
College Name: NA

Interview Preparation Tips

Round: Test
Experience: First round was a simple round which involved 10 multiple choice questions and 3 coding questions on hackerrank platform.

Round: Technical Interview
Experience: Mainly on topics like networks, data structures and algorithms, operating systems. The interviewers looked for people who have had prior experience in web development and asked questions regarding web development in depth too.
Tips: I recommend everyone to read the book titled, 'Cracking the Coding Interview' as it was helpful in my approach to an interview.

General Tips: The one major thing that would give you the edge in joining Myntra would definitely be exposure to web development. Since it is not a part of the curriculum , it's all the more important for you to familiarize yourself with web development. In fact, a few projects in the same field would put you in a very advantageous position to get the job.
Skill Tips: 1. Start your placement preparations well ahead, no point regretting later.
2. Keep a concise resume. Do not take your resume to several pages.
3. Do not neglect aptitude preparation. Many people do this mistake and end up not clearing the first round for several companies.
4. Be thorough with your basics across all subjects. (Do not neglect any subject, even they you may like a few and dislike the others.)
5. Keep in mind, the interviewers are really friendly and try to make sure that you're not nervous during the interview. All they want to do is to test you. Be confident and give it your best shot.
Skills:
College Name: NIT Surathkal

Interview Questionnaire 

10 Questions

  • Q1. What do you do when your schedule is interrupted? How you handle it?
  • Ans. 

    I prioritize tasks, communicate effectively, and adapt my plans to manage interruptions while maintaining productivity.

    • Assess the interruption: Determine its urgency and importance. For example, if a team member needs immediate help, I prioritize that.

    • Reorganize my tasks: I create a new plan that accommodates the interruption while ensuring critical deadlines are met.

    • Communicate with stakeholders: I inform my team or m...

  • Answered by AI
  • Q2. PreOrder traversal without recursion?
  • Q3. Build a bst out of the unsorted array by looping over the array and inserting each element to the tree?
  • Ans. 

    Yes

    • Create an empty binary search tree (BST)

    • Loop over the unsorted array

    • For each element, insert it into the BST using the appropriate insertion logic

    • Repeat until all elements are inserted

    • The resulting BST will be built from the unsorted array

  • Answered by AI
  • Q4. Find 2 elements in array whose sum is equal to given number?
  • Ans. 

    The question asks to find two elements in an array whose sum is equal to a given number.

    • Iterate through the array and for each element, check if the difference between the given number and the current element exists in the array.

    • Use a hash set to store the elements as you iterate through the array for efficient lookup.

    • Return the pair of elements if found, otherwise return a message indicating no such pair exists.

  • Answered by AI
  • Q5. How many types of trigger?
  • Ans. 

    There are two types of triggers: DML triggers and DDL triggers.

    • DML triggers are fired in response to DML (Data Manipulation Language) statements like INSERT, UPDATE, DELETE.

    • DDL triggers are fired in response to DDL (Data Definition Language) statements like CREATE, ALTER, DROP.

    • Examples: A DML trigger can be used to log changes made to a table, while a DDL trigger can be used to enforce certain rules when a table is alt...

  • Answered by AI
  • Q6. Can trigger be used with select statement?
  • Ans. 

    Yes, triggers can be used with select statements in SQL.

    • Triggers are database objects that are automatically executed in response to certain events, such as insert, update, or delete operations.

    • While triggers are commonly used with insert, update, and delete statements, they can also be used with select statements.

    • Using triggers with select statements allows you to perform additional actions or validations before or af...

  • Answered by AI
  • Q7. Indexing in mysql? How many types of indexing in mysql?
  • Ans. 

    Indexing in MySQL improves query performance. There are several types of indexing in MySQL.

    • Indexes are used to quickly locate data without scanning the entire table.

    • Types of indexing in MySQL include B-tree, hash, full-text, and spatial indexes.

    • B-tree indexes are the most common and suitable for most use cases.

    • Hash indexes are used for exact match lookups.

    • Full-text indexes are used for searching text-based data efficie...

  • Answered by AI
  • Q8. Engines in mysql?
  • Ans. 

    Engines in MySQL are the underlying software components that handle storage, indexing, and querying of data.

    • MySQL supports multiple storage engines, each with its own strengths and features.

    • Some commonly used engines in MySQL are InnoDB, MyISAM, and Memory.

    • InnoDB is the default engine in MySQL and provides support for transactions and foreign keys.

    • MyISAM is known for its simplicity and speed but lacks transaction suppo...

  • Answered by AI
  • Q9. Singlton pattern?
  • Ans. 

    The Singleton pattern ensures a class has only one instance and provides a global point of access to it.

    • Restricts instantiation of a class to a single object.

    • Useful for managing shared resources, like database connections.

    • Implemented using private constructors and static methods.

    • Example in Java: public class Singleton { private static Singleton instance; private Singleton() {} public static Singleton getInstance() { if...

  • Answered by AI
  • Q10. Can a constructor be private?
  • Ans. 

    Yes, a constructor can be private.

    • A private constructor can only be accessed within the class itself.

    • It is often used in singleton design pattern to restrict object creation.

    • Private constructors are also useful for utility classes that only contain static methods.

  • Answered by AI

Interview Preparation Tips

Skills: Algorithm, Data structure
College Name: na

Skills evaluated in this interview

Facebook HR Interview Questions

33 questions and answers

Q. What kind of fatalities can you face after an earthquake or unforeseen even ... read more
Q. What is your role in real life?
Q. What do you want to become after your studies?

I appeared for an interview before Dec 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 90 minutes
Round difficulty - Easy

Myntra had conducted a coding test on campus before the start of the placement season with 2 questions, one on stack and other on DP.
Tips : For the test, the DP question asked was pretty standard, on Longest Common Subsequence. The question on stacks, I don't remember what it was but it was also pretty straight forward. For the test, I would recommend to solve problem from GFG. If they do come to resume shortlisting, they are looking for people who have done good projects and internships.

  • Q1. 

    Longest Common Subsequence Problem Statement

    Given two strings STR1 and STR2, determine the length of their longest common subsequence.

    A subsequence is a sequence that can be derived from another sequen...

  • Ans. 

    The task is to find the length of the longest common subsequence between two given strings.

    • Implement a function to find the longest common subsequence between two strings.

    • Use dynamic programming to solve this problem efficiently.

    • Iterate through the strings and build a matrix to store the lengths of common subsequences.

    • Return the length of the longest common subsequence found.

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 60 minutes
Round difficulty - Easy

The interview started off with questions on my general interest in Software Development. The first round had two coding questions, I was supposed to write the code on paper. 
For the questions, they asked me to code the solution first. And then gave a specific input and asked me to demonstrate step by step in my code, how it would lead to the correct answer.
Tips: It's ok if you can't code a general solution, if you can write a code which works for the particular input they have given then also it's ok with them. But be thorough with Data structures.

  • Q1. 

    Add Two Numbers as Linked Lists

    You are given two singly linked lists, where each list represents a positive number without any leading zeros.

    Your task is to add these two numbers and return the sum as ...

  • Ans. 

    Add two numbers represented as linked lists and return the sum as a linked list.

    • Traverse both linked lists simultaneously while keeping track of carry from previous sum

    • Create a new linked list to store the sum, updating the value and carry as needed

    • Handle cases where one linked list is longer than the other by adding remaining digits with carry

  • Answered by AI
Round 3 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

I wasn't asked to write any code in this interview. They asked me some questions on Machine Learning, because of my projects in them. Then they asked me if I knew graph algorithms. Since I knew BFS and DFS, I told them. They asked the difference between the two. Then they asked me if I knew how to find the shortest distance between two points in a graph. I didn't know Dijkstra's properly but I knew it worked on the greedy approach so was able to tell that. Then they asked me how would I find the second shortest path. I tried to answer it with the same greedy approach, but couldn't arrive at the complete solution.
Tips: They ask a tough theoretical question. It's ok if you don't know the answer, they only look for your approach.

  • Q1. 

    BFS Traversal in a Graph

    Given an undirected and disconnected graph G(V, E) where V vertices are numbered from 0 to V-1, and E represents edges, your task is to output the BFS traversal starting from the ...

  • Ans. 

    BFS traversal in a disconnected graph starting from vertex 0.

    • Use a queue to keep track of nodes to visit next in BFS traversal

    • Start traversal from vertex 0 and explore its neighbors first

    • Continue exploring neighbors level by level until all nodes are visited

    • Ensure to print connected nodes in numerical sort order

  • Answered by AI
  • Q2. 

    DFS Traversal Problem Statement

    Given an undirected and disconnected graph G(V, E), where V is the number of vertices and E is the number of edges, the connections between vertices are provided in the 'GR...

  • Ans. 

    DFS traversal to find connected components in an undirected and disconnected graph.

    • Perform DFS traversal on each vertex to find connected components

    • Maintain a visited array to keep track of visited vertices

    • Print the vertices of each connected component in ascending order

  • Answered by AI
  • Q3. 

    Dijkstra's Shortest Path Problem

    Given an undirected graph with ‘V’ vertices (labeled 0, 1, ... , V-1) and ‘E’ edges, where each edge has a weight representing the distance between two connected nodes (X,...

  • Ans. 

    Dijkstra's algorithm is used to find the shortest path from a source node to all other nodes in a graph with weighted edges.

    • Implement Dijkstra's algorithm to find the shortest path distances from the source node to all other nodes in the graph.

    • Use a priority queue to efficiently select the next node with the shortest distance.

    • Update the distances of neighboring nodes based on the current node's distance and edge weight...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPA, Eligible branches : Computer Science & Engineering, Mathematics & Computing, Electrical Engineering and Electronics & Communication Engineering.Myntra interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Be thorough with Data Structures and Algorithms and also with your resume.
Tip 2 : Must do Previously asked Interview as well as Online Test Questions.
Tip 3 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 4 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Are these interview questions helpful?

Software Developer Interview Questions & Answers

Myntra user image Thommandru Vishnu

posted on 10 Mar 2015

Interview Questionnaire 

9 Questions

  • Q1. All the leaf nodes of tree are doubly linked,print only the leaf nodes of a tree
  • Ans. 

    Print only the leaf nodes of a doubly linked tree.

    • Traverse the tree and check if a node has no children and both left and right pointers are null.

    • If yes, then it is a leaf node and print it.

    • If no, then continue traversing the tree.

    • Use recursion to traverse the tree in a depth-first manner.

  • Answered by AI
  • Q2. LRU page Replacement Algorithm for large data
  • Ans. 

    LRU page replacement algorithm is used to replace the least recently used page in memory with a new page.

    • LRU stands for Least Recently Used

    • It is a cache eviction algorithm

    • It is used to manage memory in operating systems

    • It works by keeping track of the pages that are used recently and the ones that are not

    • When a new page is to be loaded into memory, the algorithm checks which page has not been used for the longest time ...

  • Answered by AI
  • Q3. Given a linked list with 2 parameters m,n. Now start reversing the m nodes and leave n nodes and continue it till u reach the end
  • Ans. 

    Reverse m nodes and leave n nodes in a linked list till the end.

    • Traverse the linked list till m nodes and reverse them

    • Traverse n nodes and continue reversing m nodes

    • Repeat the above step till the end of the linked list

    • Handle edge cases like m or n being greater than the length of the linked list

  • Answered by AI
  • Q4. Inorder Traversal of a tree
  • Ans. 

    Inorder traversal is a way of visiting all nodes in a binary tree by visiting the left subtree, then the root, and then the right subtree.

    • Start at the root node

    • Traverse the left subtree recursively

    • Visit the root node

    • Traverse the right subtree recursively

    • Repeat until all nodes have been visited

  • Answered by AI
  • Q5. Inorder Travesal of a tree without recursion(write the code)
  • Q6. Given an array of numbers in which duplicates are there and one triplicate is there. find that number
  • Ans. 

    Find the triplicate number in an array of duplicates.

    • Iterate through the array and keep track of the frequency of each number.

    • Return the number that appears three times.

    • If no number appears three times, return null.

  • Answered by AI
  • Q7. Explain all the serach algorithm you know with space and Time complexities
  • Ans. 

    Explanation of search algorithms with their space and time complexities.

    • Linear Search - O(n) time complexity, O(1) space complexity

    • Binary Search - O(log n) time complexity, O(1) space complexity

    • Jump Search - O(√n) time complexity, O(1) space complexity

    • Interpolation Search - O(log log n) time complexity, O(1) space complexity

    • Exponential Search - O(log n) time complexity, O(1) space complexity

    • Fibonacci Search - O(log n) ...

  • Answered by AI
  • Q8. Given a situation and asks you which search algorithm suits the best in that situation
  • Ans. 

    Choosing the right search algorithm depends on data structure, size, and specific requirements like speed or memory usage.

    • Binary Search: Efficient for sorted arrays, O(log n) time complexity. Example: Finding a number in a sorted list.

    • Linear Search: Simple and works on unsorted arrays, O(n) time complexity. Example: Searching for a name in an unsorted list.

    • Depth-First Search (DFS): Suitable for tree/graph traversal, ex...

  • Answered by AI
  • Q9. Given an array of length n and in which numbers from 1-n will be there and each number can repeat any number of times find out which repeated more number of times
  • Ans. 

    Find the most repeated number in an array of length n with numbers 1-n.

    • Create a dictionary to store the count of each number in the array

    • Iterate through the array and update the count in the dictionary

    • Find the key with the highest count in the dictionary

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: Basically, it's not resume shortlist, it's a 9 pointer shortlist

Round: Test
Experience: The Entire Test is held in HackerRank Platform. it has
2 coding questions (one easy and one medium)
2 output questions(medium)
2 Aptitude(easy)
1 general Computer science(medium)
it took me 30 min for each coding questions.I was not known that general question is related to bash commands.
Tips: Practice the Warmup questions in Hacker Rank.
Do some Basic aptitude questions.
Thorough with the basic c and c++ concepts
Duration: 120 minutes
Total Questions: 7

Round: Technical Interview
Experience: It's completely around the data structures. The questions are a bit tricky but once u think without any tension u can get through easily. The interviewer is helpful and gives u few hints if u catch them at the right point of time u got it.There are 2 more questions which I haven't mentioned.
Tips: got through Data Structures and Algorithms Made Easy by Narasimha Karumanchi. It's a best book for the interviews.

Round: Technical Interview
Experience: The interviewer asked to put everything on the blackboard and write down the code of each and everything.
Tips: Go to the website -----/ and study all the interview questions and modules

Round: HR Interview
Experience: It's Technical+ HR interview all the technical questions went around resume. it went around 45 minutes they are very particular about what you wrote in the resume.HR questions are general like
whats your future plans
where will u see yourself in the office after 5 years?
Tips: please make sure that whatever you write in resume should be known to you very well.Don't write false things about yourself.And make sure you know completely about the projects you are going to write in resume(atleast the part you worked)

General Tips: Be sure of what you are saying. Don't be tensed and answer to your best.
Skills: Programming, Data Structures
College Name: VIT VELLORE

Skills evaluated in this interview

Interview Questionnaire 

10 Questions

  • Q1. Change Binary tree so that parent node is the sum of root nodes
  • Q2. Reverse a linkedlist ?
  • Q3. Given an array of +ve and -ve numbers , have to rearrange them ( like +ve numbers to left and -ve numbers to right of the array)
  • Q4. Singleton pattern, observer pattern?
  • Q5. String pool and how garbage collection functionality works?
  • Ans. 

    String pool is a cache of string literals in memory. Garbage collection frees up memory by removing unused objects.

    • String pool is a cache of string literals in memory

    • Strings are immutable and can be shared among multiple objects

    • Garbage collection removes unused objects to free up memory

    • String objects that are no longer referenced are eligible for garbage collection

  • Answered by AI
  • Q6. HashMap , how can you synchronize ?
  • Q7. Process vs Thread differences and synchronization,deadlock examples?
  • Ans. 

    Process vs Thread differences and synchronization, deadlock examples

    • Process is an instance of a program while thread is a subset of a process

    • Processes are independent while threads share the same memory space

    • Synchronization is used to coordinate access to shared resources

    • Deadlock occurs when two or more threads are blocked waiting for each other to release resources

    • Examples of synchronization include mutex, semaphore, ...

  • Answered by AI
  • Q8. Database: Design with one-one mapping, one-many mapping…some basic questions, I don’t remember all
  • Q9. Design a website where after user request. A bunch of processes need to be executed and then a mail is sent to user with the result. Take care of scalability etc?
  • Ans. 

    Design a scalable website to process user requests and send email results asynchronously.

    • Use a microservices architecture to handle different processes independently.

    • Implement a message queue (e.g., RabbitMQ, Kafka) to manage requests and responses.

    • Utilize cloud services (e.g., AWS Lambda) for scalable processing of tasks.

    • Send emails using a reliable service (e.g., SendGrid, Amazon SES) to ensure delivery.

    • Implement loa...

  • Answered by AI
  • Q10. CTO round

Interview Preparation Tips

Round: HR Interview
Experience: This was CTO round, if you make this round…you are doing pretty good. 
He asked a lot on what I worked on and asked questions relevant to that. Process thread, stacks heaps. A minor system design on component in their system. How they are shared between and trade-off. We discussed about scalability and challenge.

General Tips: Process:5 technical ( 3 rounds+ SVP round + CTO round ) + 1 HR
I got almost the same package that I am currently getting (Myntra gave stock options, which I don’t have in my current company) but I am looking for a change so accepted the offer.
Skills: Algorithm, data structure, database
College Name: na

Skills evaluated in this interview

I appeared for an interview before Dec 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 120 minutes
Round difficulty - Medium

The Entire Test is held in HackerRank Platform. It has: 
2 coding questions (one easy and one medium)
2 output questions(medium)
2 Aptitude(easy)
1 general Computer science(medium)
It took me 30 min for each coding questions. I did not know that general question is related to bash commands.
Tips: Practice the Warmup questions in Hacker Rank.
Do some Basic aptitude questions.
Thorough with the basic C and C++ concepts

  • Q1. 

    Binary Tree to Doubly Linked List

    Transform a given Binary Tree into a Doubly Linked List.

    Ensure that the nodes in the Doubly Linked List follow the Inorder Traversal of the Binary Tree.

    Input:

    The fi...
  • Ans. 

    Convert a Binary Tree into a Doubly Linked List following Inorder Traversal.

    • Perform Inorder Traversal of the Binary Tree to get the nodes in order.

    • Create a Doubly Linked List by linking the nodes in the order obtained from Inorder Traversal.

    • Return the head of the Doubly Linked List as the output.

  • Answered by AI
  • Q2. 

    Unique Element in Array

    Given an arbitrary array arr consisting of N non-negative integers where every element appears thrice except for one. Your task is to find the element in the array that appears onl...

  • Ans. 

    Find the unique element in an array where every other element appears thrice.

    • Use XOR operation to find the unique element.

    • Iterate through the array and XOR each element to find the unique one.

    • Return the unique element as the answer.

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

It's completely around the data structures. The questions are a bit tricky but once u think without any tension u can get through easily. The interviewer is helpful and gives u few hints if u catch them at the right point of time u got it. 
Tips: got through Data Structures and Algorithms Made Easy by Narasimha Karumanchi. It's a best book for the interviews.

  • Q1. 

    Binary Tree Traversals Problem Statement

    Given a Binary Tree with 'N' nodes, where each node holds an integer value, your task is to compute the In-Order, Pre-Order, and Post-Order traversals of the binar...

  • Ans. 

    Implement a function to compute In-Order, Pre-Order, and Post-Order traversals of a Binary Tree given in level-order format.

    • Parse the input level-order tree elements to construct the binary tree.

    • Implement recursive functions for In-Order, Pre-Order, and Post-Order traversals.

    • Return the traversals as lists of lists for each test case.

  • Answered by AI
  • Q2. 

    Delete N Nodes After M Nodes in a Linked List

    Given a singly linked list and two integers 'N' and 'M', traverse the linked list to retain 'M' nodes and then delete the next 'N' nodes. Continue this proces...

  • Ans. 

    Traverse a linked list to retain 'M' nodes and then delete the next 'N' nodes, repeating until the end of the list.

    • Create a function that takes the head of the linked list, 'N', and 'M' as input parameters.

    • Traverse the linked list, retaining 'M' nodes and deleting the next 'N' nodes in each iteration.

    • Update the pointers accordingly to skip 'N' nodes after retaining 'M' nodes.

    • Repeat this process until the end of the lin...

  • Answered by AI
Round 3 - Video Call 

(1 Question)

Round duration - 60 minutes
Round difficulty - Easy

The interviewer asked to put everything on the blackboard and write down the code of each and everything.

Question : Explain all the search algorithm you know with space and Time complexities. 
Answer : Linear search : It is a sequential search algorithm where the entire array is traversed till the desired element is not found. Time complexity is O(N) and auxiliary space is O(1). 
Binary search : In this algorithm, a sorted array is searched by repeatedly dividing the search interval in half. 
Steps : 
1. Initially the interval covers the whole array.
2. If the value to be searched is less than the item in the middle of the interval, narrow the interval to the lower half. Otherwise, narrow it to the upper half. 
3. The process is repeated until the value is found or the interval is empty.
Time complexity is O(log n) and auxiliary space is O(1) in case of iterative implementation.

  • Q1. 

    Maximum Frequency Number Problem Statement

    Given an array of integers with numbers in random order, write a program to find and return the number which appears the most frequently in the array.

    If multip...

  • Ans. 

    Program to find the number with maximum frequency in an array of integers.

    • Create a dictionary to store the frequency of each number in the array.

    • Iterate through the array and update the frequency count in the dictionary.

    • Find the number with the maximum frequency in the dictionary and return it.

    • If multiple elements have the same maximum frequency, return the one with the lowest index.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAMyntra interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Facebook Interview FAQs

How many rounds are there in Facebook Associate Software Engineer interview?
Facebook interview process usually has 1 rounds. The most common rounds in the Facebook interview process are Technical.

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