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Grey Orange Software Engineer Interview Questions, Process, and Tips

Updated 11 Feb 2023

Top Grey Orange Software Engineer Interview Questions and Answers

  • Q1. Print All Permutations of a String Given an input string STR , generate and print all possible permutations of the string. Input: str Output: All permutations of the inp ...read more
  • Q2. Longest Consecutive Sequence Problem Statement You are provided with an unsorted array/list ARR of N integers. Your task is to determine the length of the longest consec ...read more
  • Q3. Nth Fibonacci Number Problem Statement Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2) , with initial ...read more
View all 6 questions

Grey Orange Software Engineer Interview Experiences

3 interviews found

I was interviewed in May 2022.

Round 1 - Coding Test 

(1 Question)

Round duration - 120 Minutes
Round difficulty - Easy

  • Q1. 

    Rectangle Area Calculation

    Given a list of rectangles, where each rectangle is represented by an array of four integers indicating its bottom-left and top-right corners, calculate the total area covered b...

  • Ans. 

    Calculate total area covered by a list of rectangles on a plane.

    • Iterate through each rectangle and calculate its area

    • Check for overlapping areas between rectangles

    • Sum up the total area covered by all rectangles

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

Oops concepts and 1 DSA problem

  • Q1. 

    Bit Set Problem Statement

    You are provided with a string, termed as DIGIT_PATTERN, which consists solely of digits. The objective is to identify the first digit that repeats in the sequence. If there's no...

  • Ans. 

    Identify the first repeating digit in a given string of digits.

    • Iterate through the string and keep track of seen digits using a set.

    • Return the first digit that repeats, or -1 if no digit repeats.

    • Time complexity: O(n), where n is the length of the input string.

  • Answered by AI
Round 3 - Face to Face 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

Firstly Some general questions and then suddenly a cosing question with modifications

  • Q1. 

    Print All Permutations of a String

    Given an input string STR, generate and print all possible permutations of the string.

    Input:

    str

    Output:

    All permutations of the input string, each on a new line.

    ...

  • Ans. 

    Generate and print all possible permutations of a given input string.

    • Use recursion to generate all permutations by swapping characters in the string.

    • Maintain a visited array to keep track of characters already used in a particular permutation.

    • Print each permutation as it is generated.

    • Handle duplicate characters by skipping swapping if the character is already in the current position.

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from TIET - Thapar Institute of Engineering And Technology. I applied for the job as Software Engineer in GurgaonEligibility criteria7.5 CgpaGreyOrange interview preparation:Topics to prepare for the interview - DSA, OOPs, OS, DBMS, projects, PuzzlesTime required to prepare for the interview - 6 MonthsInterview preparation tips for other job seekers

Tip 1 : You should be perfect in what you know
Tip 2 : Prepare atleast DSA standard questions very well
Tip 3 : Don't ignore OOPs, they are asked very frequently.

Application resume tips for other job seekers

Tip 1 : Add good projects
Tip 2 : Must mention all your coding profiles and github where you worked.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Feb 2022. There were 4 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - One-on-one 

(1 Question)

  • Q1. The interviewer asked Basic SQL and Linux OS-related questions.
Round 3 - Technical 

(2 Questions)

  • Q1. The interviewer asked questions regarding projects and experience.
  • Q2. The interviewer asked some aptitude and logical reasoning questions.
Round 4 - HR 

(1 Question)

  • Q1. Salary negotiations.

Interview Preparation Tips

Interview preparation tips for other job seekers - Good organization for freshers and people with no/limited experience.

Software Engineer Interview Questions Asked at Other Companies

asked in Qualcomm
Q1. Bridge and torch problem : Four people come to a river in the nig ... read more
asked in Capgemini
Q2. In a dark room,there is a box of 18 white and 5 black gloves. You ... read more
asked in TCS
Q3. Find the Duplicate Number Problem Statement Given an integer arra ... read more
Q4. Tell me something about yourself. Define encapsulation. What is i ... read more
asked in Paytm
Q5. Puzzle : 100 people are standing in a circle .each one is allowed ... read more

I was interviewed in Jan 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 120 minutes
Round difficulty - Easy

The test had it's webcam on, we were not allowed to go out of the frame.

  • Q1. 

    Nth Fibonacci Number Problem Statement

    Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2), with initial conditions F(1) = F(2) = 1.

    Input:

    ...
  • Ans. 

    The program calculates the Nth Fibonacci number using a recursive formula.

    • The Fibonacci series starts with 1, 1, and each subsequent number is the sum of the two preceding numbers.

    • The program uses a recursive function to calculate the Nth Fibonacci number.

    • The time complexity of the program is O(2^N), which can be optimized using memoization or dynamic programming.

  • Answered by AI
  • Q2. 

    Longest Consecutive Sequence Problem Statement

    You are provided with an unsorted array/list ARR of N integers. Your task is to determine the length of the longest consecutive sequence present in the array...

  • Ans. 

    The task is to find the length of the longest consecutive sequence in an unsorted array of integers.

    • Sort the array to bring consecutive numbers together

    • Iterate through the sorted array and keep track of the current consecutive sequence length

    • Update the maximum length if a longer sequence is found

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 30 minutes
Round difficulty - Medium

The interview was online from home.

  • Q1. 

    Reverse the String Problem Statement

    You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.

    Example:

    Input:
    STR = "abcde"
    Output:
    "e...
  • Ans. 

    The task is to reverse a given string containing lowercase letters, uppercase letters, digits, and special characters.

    • Iterate through the string from the last character to the first character and append each character to a new string.

    • Alternatively, you can use built-in string reversal functions or methods available in your programming language.

    • To solve the follow-up question with O(1) space complexity, you can use a tw...

  • Answered by AI
Round 3 - HR 

Round duration - 20 minutes
Round difficulty - Easy

This was last round. In this round interviewer ask about me and what i know about company. Also he ask about my projects as well as my future goals . 
The interviewer was very understanding and supportive.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Software Engineer in GurgaonEligibility criteriaNoGreyOrange interview preparation:Topics to prepare for the interview - Data Structures, Object-Oriented Programming, Algorithms, Dynamic programming, Graphs, Operating Systems and Database Management System,Java, MySQL, HTML, CSS, JavaScript, Nodejs, PythonTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

Tip 1 : Find a good course, and first clear all your fundamentals and implementation of every data structure. You should be thorough with their time as well as space complexities. 
Tip 2 : Upon clearing the fundamentals, select a platform where you have a large no of questions, also whose test cases are good. eg. LeetCode, InterviewBit or Codezen. Go and complete 300-400 questions.
Tip 3 : Also whenever you're not able to solve the problem, check out the editorial and then re-attempt it again. Also, check the discussion if there is some good solution to the same problem.
Tip 4 : For OOPS, DS and programming, I recommend Codezen, Leetcode, InterviewBit and GeeksforGeeks.
Tip 5 : For OS, DBMS and Computer Network, I recommend GateSmasher, Knowledge Gate and TutorialsPoint.

Application resume tips for other job seekers

Tip 1 : Resume should contain facts, numbers, and data comparison.
Tip 2 : Mention only those projects and internships in your resume that you are comfortable with, that is, you can explain to the interviewee.
Tip 3 : Technical achievements in the field you're applying to, would be good.
Tip 4 : DO NOT FAKE THINGS, the interviewer is smart enough.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview questions from similar companies

Interview Preparation Tips

Round: Group Discussion
Experience: GD was conducted for shortlisted candidates and candidates were divided into groups of 6 people.There were 3 topics and each topic was discussed for 2 minutes.No specific rules,like each person needs to speak,are to be followed during the GD.Anyone can initiate,intervene,etc. Finally we were asked to link all three topics and this discussion went on for another 2 minutes.

Round: HR Interview
Experience: Only a single round lasting about 40-45 minutes.There were only 4 people in the panel and technical as well as HR questions were asked. First I was asked to go through my own resume, “Introduce/Tell us about yourself?".  E.g.:“Where have you shown leadership qualities?Have you led a
team?Size of team? What new initiatives did you take?”.Core questions starting form basics like “How does an airplane fly?” to specific questions about the different types of engines used in airplanes,their specifications, etc. were asked. HR questions were put up like"What was the most difficult decision in your life?" and grilled on my internship for 15-20 minutes which I did in Transocean. (Another oil field services company).

General Tips: You need to be very good in the basics of your
core courses and if you have done an internship in the oil industry,
you will definitely be grilled on that.Questions will be asked in quick succession.
Skill Tips: Highlight any intern in Oil industry or anything related to that in your resume.Any POR or any sport activity which shows your leadership qualities should me mentioned in your resume.
Skills: Leadership qualities, Athletic, Quick thinking, presence of mind
College Name: IIT MADRAS

Interview Preparation Tips

Round: Test
Experience: Algorithmic coding test was conducted on hackerank platform. Around 60 students gave online test. There were 4-5 algo questions to be done in 90 mins duration.

Tips: Try to do at least 2 questions.

Round: Technical Interview
Experience: First Interviewer asked me to introduce myself. Then he asked me questions on data structures & Algo. He asked me about tree data structures, why it is used, time complexities of various operations on tree, balancing of tree, AVL Tree. He asked me write AVL Tree insertion, deletion, update code. Then he jumps to BTree, B+Tree and asks me write code on paper for various operations. Questions were asked on indexing, various types of indexing, how it is used in databases, etc. Then he briefly asked about the project I done in my internship.


Round: Technical Interview
Experience: Interviewer asked me how was my 1st round, I said it was great. He first asked me introduce myself. Then he asked about my projects mentioned in my resume. I done a project in machine learning on spam webpage detection. He was interested in that. He asked me what language, libraries I used to implement that project. Then he gave me real time scenario to predict whether an item is explosive or not. Then I approached this problem and asked information related to problem. He was impressed by the approach I target the problem. He asked me what machine learning model will be best and what are their pros and cons. Then he asked me question that given 100 sorted linked lists, you have to merge them and return single sorted linked list. I gave 3-4 solutions with their time & space complexities.


Round: HR Interview
Experience: Interviewer asked me common HR questions like tell me about yourself, my family background, why do you want to join the company, what impact you can make in Snapdeal, why should we hire you. After that he congratulated me for the role of SDE at Snapdeal. I was very happy at that moment.

All the 5 students cleared this round.

Skills: SQL, ML, Algorithms And Data Structures, Python, Basic C/C++
College Name: IIT Guwahati

I was interviewed before Apr 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 90 minutes
Round difficulty - Easy

There were 22 MCQ questions of aptitude and technical based while 3 questions were of coding type.
Tips: MCQ questions were not time consuming , so try to do that questions in less time , so you will get enough time for coding questions.

  • Q1. 

    Balanced Parentheses Check

    Given a string STR consisting solely of the characters '{', '}', '(', ')', '[', and ']', determine whether the parentheses are balanced.

    Input:

    The first line contains an inte...
  • Ans. 

    Implement a function to check if parentheses in a string are balanced.

    • Use a stack to keep track of opening parentheses and pop when a closing parenthesis is encountered.

    • If the stack is empty when a closing parenthesis is encountered or if there are unmatched parentheses at the end, return 'NO'.

    • Ensure that all opening parentheses have a corresponding closing parenthesis in the correct order.

    • Return 'YES' if all parenthes...

  • Answered by AI
  • Q2. 

    Find the Next Greater Number with the Same Set of Digits

    Given a string S that represents a number, determine the smallest number that is strictly greater than the original number and has the same set of ...

  • Ans. 

    The task is to find the smallest number greater than the given number with the same set of digits.

    • Sort the digits of the number in descending order.

    • Find the first digit from the right that is smaller than the digit to its right.

    • Swap this digit with the smallest digit to its right that is greater than it.

    • Sort all the digits to the right of the swapped digit in ascending order to get the smallest number greater than the

  • Answered by AI
Round 2 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

My experience was very awesome , I answered all the questions , although in starting I was very nervous , so at starting interviewer help me get my confidence, interviewer was very helpful.

  • Q1. 

    Maximum Level Sum in Binary Tree Problem Statement

    Given an arbitrary binary tree consisting of N nodes, where each node is associated with a certain value, your task is to find the maximum sum for any le...

  • Ans. 

    Find the maximum sum for any level in a binary tree.

    • Traverse the binary tree level by level and calculate the sum for each level.

    • Keep track of the maximum sum encountered so far.

    • Return the maximum sum found.

    • Example: For the input tree, the maximum level sum is 13 (5+6+2).

  • Answered by AI
  • Q2. 

    Find Top K Frequent Numbers in a Stream

    Given an integer array ARR and an integer K, your task is to find the K most frequent elements in ARR. Return the elements sorted in ascending order.

    Example:

    Inp...
  • Ans. 

    Find the K most frequent elements in an integer array and return them sorted in ascending order.

    • Use a hashmap to store the frequency of each element in the array.

    • Use a min heap to keep track of the K most frequent elements.

    • Return the elements from the min heap in ascending order.

  • Answered by AI
Round 3 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

This round was based on DSA and questions on core subjects that I had studied throughout college.

  • Q1. 

    Vertical Sum in a Binary Tree

    Given a binary tree where each node has a positive integer value, compute the vertical sum of the nodes. The vertical sum is defined as the sum of all nodes aligned along the...

  • Ans. 

    Compute the vertical sum of nodes in a binary tree aligned along the same vertical line.

    • Traverse the binary tree in a level order manner to calculate the vertical sum.

    • Use a hashmap to store the vertical sum at each vertical level.

    • Recursively traverse the tree and update the vertical sum in the hashmap.

    • Output the vertical sums in the required format for each test case.

  • Answered by AI
  • Q2. What is TCP/IP?
  • Ans. 

    TCP/IP is a set of protocols that governs the way data is transmitted over the internet.

    • TCP/IP stands for Transmission Control Protocol/Internet Protocol.

    • It is a suite of communication protocols used to connect devices on the internet.

    • TCP ensures that data is reliably transmitted between devices.

    • IP is responsible for addressing and routing data packets across networks.

    • Examples of TCP/IP protocols include HTTP, FTP, and

  • Answered by AI
Round 4 - HR 

Round duration - 30 minutes
Round difficulty - Easy

Experience : Keep confidence and show them good communication skills. Previous round's performance also matters in this rounds

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPASnapdeal interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 5 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

Software Engineer Interview Questions & Answers

Snapdeal user image Sarvesh Maheshwari

posted on 10 Apr 2015

Interview Questionnaire 

9 Questions

  • Q1. Calculate the level sum of the binary tree
  • Ans. 

    Calculate the level sum of a binary tree.

    • Traverse the tree level by level using BFS

    • Add the values of nodes at each level

    • Store the level sum in an array

    • Return the array of level sums

  • Answered by AI
  • Q2. Defective ball puzzle problem
  • Q3. Some basic problems (OOP concept,basic datastructures)
  • Q4. Vertical sum of binary tree
  • Ans. 

    Vertical sum of binary tree is the sum of all nodes in each vertical line of the tree.

    • Traverse the tree in-order and keep track of the horizontal distance of each node from the root.

    • Use a hash table to store the sum of nodes at each horizontal distance.

    • Recursively traverse the left and right subtrees and update the hash table accordingly.

  • Answered by AI
  • Q5. Questions on TCP/IP, Database, OS, Data-structures, (and on many more which you studied in your whole college life)
  • Q6. Calculate the top 10 words , which comes frequently in 1 hour time span , on facebook, (dynamically)
  • Ans. 

    Calculate top 10 frequently used words on Facebook in 1 hour dynamically.

    • Use Facebook API to fetch data

    • Implement a script to count word frequency

    • Sort the words based on frequency and return top 10

  • Answered by AI
  • Q7. Tell About Yourself
  • Ans. 

    I am a software engineer with experience in developing web applications and a passion for problem-solving.

    • Proficient in programming languages such as Java, Python, and JavaScript

    • Experience with front-end frameworks like React and Angular

    • Familiarity with back-end technologies such as Node.js and Spring Boot

    • Strong understanding of data structures and algorithms

    • Ability to work collaboratively in a team environment

  • Answered by AI
  • Q8. Family Background
  • Q9. Number of rectangles/squares in chess board
  • Ans. 

    There are 204 squares and 1296 rectangles on a standard 8x8 chess board.

    • The number of squares can be calculated using the formula n(n+1)(2n+1)/6, where n is the number of rows/columns.

    • The number of rectangles can be calculated using the formula n(n+1)m(m+1)/4, where n and m are the number of rows and columns respectively.

    • For an 8x8 chess board, there are 64 squares of size 1x1, 49 squares of size 2x2, 36 squares of siz...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were 22 MCQ questions  on the technical .while 3 questions were of coding type .1.check for balanced parentheses in an expression2. Find out next higher number with same set of digits3. Doesn't Remember.
Tips: MCQ questions were not time consuming , so try to do that questions in less time , so you will get enough time for coding questions.
Duration: 90 minutes
Total Questions: 25

Round: Technical Interview
Experience: My experience was very awesome , i answered all the questions , although in starting i was very nervous , so at starting interviewer help me get my confidence, interviewer was very helpful.
Tips: Don't get panic. Just listen the questions carefully and then answer it.

Round: Technical Interview
Experience: I was not confident while answering Q3, and my answer was not appropriate, though after with little help of interviewer i got the answer properly.

Round: HR Interview
Tips: Keep confidence and show them good communication skills.Previous round's performance also matters in this rounds

College Name: NIT JALANDHAR
Funny Moments: In H.R. RoundOne of my friend was interviewed before me, so he told me the questions,H.R. asked him, and one of them was, number of squares in chess board, and then there was my turn for H.R. interview, i went, and he asked me , In chess board , there are how many , before completing his question i answered,204,  while his question was , how many rectangles,  "ye question pakka tune apne friend se pucha hoga :p " then we passed smiles, but i gave him proper solution of calculation of 204, and then answered my question too.

Skills evaluated in this interview

Interview Questionnaire 

32 Questions

  • Q1. Discussion on the rectangular board question asked in prev round
  • Q2. How will you implement a shuffle function for a playlist of songs
  • Ans. 

    Implementing a shuffle function for a playlist of songs

    • Create a new empty playlist

    • Randomly select a song from the original playlist and add it to the new playlist

    • Remove the selected song from the original playlist

    • Repeat until all songs have been added to the new playlist

    • Return the new shuffled playlist

  • Answered by AI
  • Q3. What is memory leak?
  • Ans. 

    Memory leak is a situation where a program fails to release memory it no longer needs.

    • Memory leaks can cause a program to consume more and more memory over time, eventually leading to crashes or other issues.

    • Memory leaks can be caused by programming errors such as not freeing memory after it is no longer needed.

    • Tools like valgrind can be used to detect memory leaks in C and C++ programs.

    • Examples of memory leaks include...

  • Answered by AI
  • Q4. What is the problem with arrays?
  • Ans. 

    Arrays have fixed size and can lead to memory wastage and performance issues.

    • Arrays have a fixed size and cannot be resized dynamically.

    • Inserting or deleting elements in an array can be time-consuming.

    • Arrays can lead to memory wastage if they are not fully utilized.

    • Arrays can cause performance issues if they are too large and need to be traversed frequently.

    • Arrays can also be prone to buffer overflow attacks.

    • Example: A...

  • Answered by AI
  • Q5. Write a function in javascript to hide text on mouse click
  • Ans. 

    Function to hide text on mouse click in JavaScript

    • Create a function that takes an element as input

    • Add an event listener to the element for a mouse click

    • Toggle the element's display property between 'none' and its original value

  • Answered by AI
  • Q6. A unsorted array was given and a number x.find out the two elements whose sum is equal to x
  • Ans. 

    Find two elements in an unsorted array whose sum is equal to a given number x.

    • Use a hash table to store the difference between x and each element in the array.

    • Iterate through the array and check if the current element is in the hash table.

    • Return the pair of elements that add up to x.

  • Answered by AI
  • Q7. More questions on basic OS concepts related to storage, memory
  • Q8. Puzzle : -----/
  • Q9. What is BST ?
  • Ans. 

    BST stands for Binary Search Tree, a data structure used for efficient searching and sorting operations.

    • BST is a tree-like data structure where each node has at most two children.

    • The left child of a node contains a value less than the parent node, while the right child contains a value greater than the parent node.

    • BST allows for efficient searching and sorting operations with a time complexity of O(log n).

    • Examples of a...

  • Answered by AI
  • Q10. How many BSTs are possible with two nodes and three nodes?
  • Ans. 

    Number of possible BSTs with 2 and 3 nodes.

    • For 2 nodes, only 2 BSTs are possible.

    • For 3 nodes, 5 BSTs are possible.

    • Number of BSTs can be calculated using Catalan numbers formula.

    • Catalan(2) = 2, Catalan(3) = 5.

  • Answered by AI
  • Q11. How many trees are possible with two and three nodes?
  • Ans. 

    Answering the question about possible trees with two and three nodes.

    • For two nodes, there is only one possible tree.

    • For three nodes, there are three possible trees.

    • The formula for calculating the number of possible trees with n nodes is (2n-3)!!.

    • The double exclamation mark represents the double factorial function.

    • The double factorial function is defined as n!! = n(n-2)(n-4)...(1 or 2).

  • Answered by AI
  • Q12. Puzzle : 100 people are standing in a circle .each one is allowed to shoot a person infront of him and he hands the gun to the next to next person for e.g 1st person kills 2nd and hands gun to 3rd .This c...
  • Q13. What is indexing? Why it is used?
  • Q14. What are B+ trees?what is the advantage?
  • Ans. 

    B+ trees are balanced trees used for indexing and searching large amounts of data.

    • B+ trees are similar to binary search trees but have multiple keys per node.

    • They are commonly used in databases and file systems.

    • B+ trees have a high fanout, reducing the number of disk accesses required for searching.

    • They are also self-balancing, ensuring efficient performance even with large amounts of data.

    • Example: In a database, a B+ ...

  • Answered by AI
  • Q15. Any questions you want to ask?
  • Ans. 

    Yes, I have a few questions.

    • Can you tell me more about the team I'll be working with?

    • What is the company culture like?

    • What are the biggest challenges the team is currently facing?

    • Can you walk me through the development process for a typical project?

    • What opportunities are there for professional growth and development?

  • Answered by AI
  • Q16. Asked me about the skills i have mentioned in my resume
  • Q17. Which data structure i like?
  • Ans. 

    I prefer hash tables for their constant time lookup and insertion.

    • Hash tables are efficient for storing and retrieving data.

    • They have constant time complexity for both insertion and lookup.

    • They can be implemented using arrays or linked lists.

    • Examples include Python's dictionary and Java's HashMap.

  • Answered by AI
  • Q18. Can you implement a stack using queue
  • Ans. 

    Yes, we can implement a stack using two queues.

    • Push operation: Enqueue the element to the first queue.

    • Pop operation: Dequeue all elements from the first queue and enqueue them to the second queue until the last element. Dequeue and return the last element. Swap the names of the queues.

    • Top operation: Same as pop operation but don't dequeue the last element.

    • Example: Push 1, 2, 3. Queue 1: 1 2 3. Queue 2: empty. Pop opera...

  • Answered by AI
  • Q19. Two arrays of arrival time of trains and departure time of trains were given. find the minimum no of platforms require so that no collision occurs
  • Ans. 

    Find minimum no of platforms required to avoid collision between trains based on their arrival and departure times.

    • Sort both arrays in ascending order

    • Initialize platform count and max count to 1

    • Loop through both arrays and compare arrival and departure times

    • If arrival time is less than or equal to departure time, increment platform count

    • Else, decrement platform count

    • Update max count if platform count is greater than ma

  • Answered by AI
  • Q20. What is JVM ? Difference between JVM and compiler
  • Ans. 

    JVM stands for Java Virtual Machine. It is an abstract machine that provides a runtime environment for Java programs.

    • JVM is responsible for interpreting the compiled Java code and executing it.

    • It provides platform independence by converting bytecode into machine-specific code.

    • JVM has various components like class loader, bytecode verifier, and execution engine.

    • Compiler converts source code into bytecode, while JVM exec...

  • Answered by AI
  • Q21. He asked me to write a html code for a page design he gave
  • Q22. He asked me to write a query for a relational schema and problem statement given by him
  • Q23. Tell me about Yourself
  • Ans. 

    I am a software engineer with experience in developing web applications and a passion for learning new technologies.

    • Experienced in developing web applications using technologies such as Java, Spring, and Angular

    • Passionate about learning new technologies and keeping up with industry trends

    • Strong problem-solving skills and ability to work in a team environment

    • Completed a Bachelor's degree in Computer Science from XYZ Uni

  • Answered by AI
  • Q24. She asked me if i was nervous
  • Q25. What do i know about PayTM ?
  • Ans. 

    PayTM is an Indian e-commerce payment system and digital wallet company.

    • PayTM was founded in 2010 by Vijay Shekhar Sharma.

    • It started as a mobile recharge and bill payment platform.

    • PayTM has expanded to offer services like online shopping, movie ticket booking, and travel bookings.

    • It also offers a digital wallet that can be used to pay for various services and products.

    • PayTM has over 350 million registered users and is ...

  • Answered by AI
  • Q26. Any feature i would like to add in PayTM app?
  • Ans. 

    I would like to add a feature for splitting bills among friends.

    • The feature would allow users to split bills for movies, dinners, etc.

    • Users can select friends from their contact list and split the bill equally or unequally.

    • The app would send a notification to the selected friends to pay their share.

    • The feature would make it easier for users to split expenses and avoid awkward conversations.

    • It would also encourage more

  • Answered by AI
  • Q27. What is my favourite app and any improvements in it which i want to implement?
  • Ans. 

    My favourite app is Spotify. I would like to see improvements in the algorithm for personalized playlists.

    • Improved algorithm for personalized playlists

    • Better integration with social media platforms

    • Option to create collaborative playlists with friends

  • Answered by AI
  • Q28. She asked me about my school and which school i like the most and why?
  • Q29. She asked me about my family
  • Q30. What is my favourite subject?
  • Ans. 

    My favourite subject is Computer Science.

    • I enjoy programming and problem-solving.

    • I find algorithms and data structures fascinating.

    • I am interested in artificial intelligence and machine learning.

    • I like learning about new technologies and keeping up with industry trends.

  • Answered by AI
  • Q31. Have i ever been to delhi?
  • Q32. Why do I choose NIT Hamirpur? what do i like about Hamirpur?
  • Ans. 

    I choose NIT Hamirpur because of its excellent academic reputation and beautiful campus.

    • NIT Hamirpur has a strong focus on academics and research, which aligns with my career goals.

    • The campus is located in a serene and picturesque location, which provides a conducive environment for learning.

    • The faculty members are highly experienced and knowledgeable, and are always willing to help students.

    • The college has state-of-th...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: General aptitude was easy.It was of 30 mins.
Next technical aptitude and coding questions were of 50 mins duration.
Technical aptitude questions were from OS,C,C++,DBMS.Questions were based on basic concepts.
There were 3 coding questions.
1.A girl eat fish of exact length of 10.She can cut the fish to get the desired length.An array of lengths of fish and maximum possible cuts allowed were given.Find out the max number of fish the girl can eat.
2. A 2-D rectangular board which contains sand grains : 'o' ,obstacles: 'x' and empty cells : '.' .The board is kept vertical. The sand grain can move down into and empty cell but it cannot cross obstacle. find out the final position of all sand grains in the board.
3.It was question on subsequence .
Tips: Just keep your basic concepts clear. Practice questions on strings,dynamic programming and recursion.Go through Geeksforgeeks .It'll help you a lot.
Duration: 80mins minutes
Total Questions: 50

Round: Technical Interview
Experience: The interviewer was very calm and polite. He was giving me hints and enough time to solve the questions.
Tips: Keep talking with the interviewer .Discuss your approach. Do take hints they give you.

Round: Technical Interview
Experience: I was stuck in one or two questions but they keep giving me hints. Interviewers were very nice. They were asking me the approach for each question. They were very cool.

Tips: Stay calm and go ahead. Apply whatever basic knowledge you have . keep asking doubts for the questions if you have any.

Round: Technical Interview
Experience: He asked me about my projects. What was my role. It was an hour long round. Enough time was given to solve each question.I was asked to write code with minimum complexity.
Tips: Keep discussing the questions. Try to reach to the best approach .keep smiling.Never fake your resume.

Round: HR Interview
Experience: The HR was very polite.I was a bit nervous at first but then I was relaxed.
Tips: Just be yourself .You are almost done when you are selected for HR. :) Keep Smiling and be confident about what ever you say.

General Tips: Be confident and have clear basic concepts of all subjects.
Skill Tips: Practise as many questions as you can on geeksforgeeks.
Skills: Coding skills, Logical skills, Aptitude, Basic Knowledge of DBMS
College Name: NIT Hamirpur
Motivation: My recent project work related to E-commerce and the reputation and ecstatic growth of the company in recent months.
Funny Moments: after one of the technical round , interviewer asked me if i had any questions about the company.I asked them what kind of rewards will be given .. do you guys go for trips and get any free coupons :P

Skills evaluated in this interview

Interview Questionnaire 

7 Questions

  • Q1. Given an array find the number of conitnuous sequences having equal number of 0's and 1's
  • Ans. 

    Count the number of continuous sequences with equal number of 0's and 1's in an array.

    • Iterate through the array and keep track of the count of 0's and 1's encountered so far.

    • Store the difference between the counts in a hash table and increment the count for that difference.

    • If the difference is already present in the hash table, add the count to the existing value.

    • Return the sum of all values in the hash table.

  • Answered by AI
  • Q2. Number of substrngs which are palindrome
  • Ans. 

    Count the number of palindromic substrings in a given string.

    • A substring is a contiguous sequence of characters within a string.

    • A palindrome is a string that reads the same backward as forward.

    • Use dynamic programming to count all palindromic substrings.

    • Time complexity can be reduced to O(n^2) using Manacher's algorithm.

  • Answered by AI
  • Q3. Longest Palindrom in a string in O(n)
  • Ans. 

    Find the longest palindrome in a given string in linear time complexity.

    • Use Manacher's algorithm to find the longest palindrome in a string in O(n) time complexity.

    • The algorithm involves preprocessing the string to add special characters to handle even and odd length palindromes.

    • Then, it uses a combination of dynamic programming and symmetry properties to find the longest palindrome.

    • For example, in the string 'babad',

  • Answered by AI
  • Q4. Find the value of pie
  • Ans. 

    The value of pie is a mathematical constant approximately equal to 3.14159.

    • Pie is the ratio of the circumference of a circle to its diameter.

    • It is an irrational number, meaning it cannot be expressed as a finite decimal or fraction.

    • Pie is commonly used in geometry and trigonometry calculations.

    • The value of pie is often approximated as 3.14 or 22/7.

  • Answered by AI
  • Q5. Project discussion
  • Q6. Tell me about yourself
  • Ans. 

    I am a passionate software engineer with experience in developing web applications using various technologies.

    • Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

    • Proficient in backend development with Node.js and databases like MongoDB and MySQL

    • Familiar with version control systems like Git and deployment tools like Docker

    • Strong problem-solving skills and ability

  • Answered by AI
  • Q7. Will u be able to fit in the company ?
  • Ans. 

    Yes, I believe I will be able to fit in the company based on my experience, skills, and values.

    • I have experience working in diverse teams and adapting to different work cultures.

    • I share the company's values and vision, which align with my own.

    • I am eager to learn and contribute to the team, fostering a positive work environment.

    • I have strong communication skills, which are essential for collaboration and teamwork.

  • Answered by AI

Interview Preparation Tips

Round: Test
Duration: 20 minutes
Total Questions: 20

Round: Technical Interview
Experience: Nice
Tips: Cormen
Programming contests
Interviewbit.com
geeksforgeeks.com

Round: Technical Interview
Experience: niice
Tips: Cormen
Programming contests
Interviewbit.com
geeksforgeeks.com

Round: Technical Interview
Experience: nice
Tips: do some projects

Round: HR Interview
Experience: nice
Tips: read on google on how to answer such questions

General Tips: geeksforgeeks.com
Skill Tips: Cormen
Programming contests
Interviewbit.com
geeksforgeeks.com
Skills: c , algorithms , data structures
College Name: Delhi Technological University, Delhi

Skills evaluated in this interview

Interview Questionnaire 

2 Questions

  • Q1. What's is meaning of success?
  • Ans. 

    Success is achieving one's goals and feeling fulfilled in the process.

    • Success is subjective and varies from person to person.

    • It can be achieving a personal or professional goal.

    • Success can also be measured by the impact one has on others.

    • Feeling fulfilled and content is a key component of success.

    • Success is not always about material possessions or wealth.

  • Answered by AI
  • Q2. Why do we work in corporate office?

Interview Preparation Tips

Interview preparation tips for other job seekers - Find all these kind of of questions and their solutions then you cracked any kind of interviews.
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Grey Orange Interview FAQs

How many rounds are there in Grey Orange Software Engineer interview?
Grey Orange interview process usually has 4 rounds. The most common rounds in the Grey Orange interview process are Resume Shortlist, One-on-one Round and Technical.
How to prepare for Grey Orange Software Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Grey Orange. The most common topics and skills that interviewers at Grey Orange expect are Python, SQL, Automation Testing, Technical Documentation and Analytical Chemistry.
What are the top questions asked in Grey Orange Software Engineer interview?

Some of the top questions asked at the Grey Orange Software Engineer interview -

  1. The interviewer asked Basic SQL and Linux OS-related questio...read more
  2. The interviewer asked some aptitude and logical reasoning questio...read more

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Grey Orange Software Engineer Interview Process

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