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I applied via Walk-in and was interviewed in Jun 2022. There were 2 interview rounds.
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I applied via Company Website and was interviewed in Oct 2023. There were 3 interview rounds.
Aptitude test is very nice 🙂
A content writer is a professional who creates written content for websites, blogs, social media, and other digital platforms.
Researching and writing engaging content for various platforms
Optimizing content for SEO to improve visibility
Collaborating with designers and marketers to create cohesive messaging
Editing and proofreading content for accuracy and consistency
I applied via Internshala and was interviewed before May 2023. There were 2 interview rounds.
I was told to write an assignment of around 500 words
I applied via Recruitment Consultant and was interviewed in Aug 2021. There were 3 interview rounds.
I can write around 2000-2500 words per day depending on the topic and research required.
I prioritize quality over quantity
I research thoroughly before writing
I take breaks to avoid burnout
I can adjust my writing speed based on the deadline
I have written up to 5000 words in a day for urgent projects
Indexes in MySQL are used to improve query performance by allowing faster data retrieval.
Indexes are created on one or more columns of a table.
They work by creating a separate data structure that allows for faster data retrieval.
Indexes can be created using the CREATE INDEX statement.
Indexes can also be dropped using the DROP INDEX statement.
Indexes can be used to speed up SELECT, UPDATE, and DELETE statements.
Indexes ...
include_once and require_once are PHP functions used to include files. The difference is in how they handle errors.
include_once will only include the file once, and will not throw a fatal error if the file is not found
require_once will also only include the file once, but will throw a fatal error if the file is not found
Both functions are used to include files that contain functions or variables that are needed in the
Sessions and cookies are both used for maintaining user state, but sessions are server-side and cookies are client-side.
Sessions store user data on the server, while cookies store data on the client's browser
Sessions are more secure than cookies because the data is not accessible to the client
Cookies can be used for tracking user behavior and preferences
Sessions are typically used for authentication and authorization p...
To find missing number in an array of first n numbers.
Calculate the sum of first n numbers using formula n*(n+1)/2
Calculate the sum of given array using loop
Subtract the sum of array from sum of first n numbers to get the missing number
Design a database schema for a chat application with individual and group messaging.
Create a 'users' table with unique user IDs
Create a 'messages' table with message IDs, sender and receiver IDs, message content, and timestamp
Create a 'groups' table with unique group IDs and group names
Create a 'group_members' table with group ID and user ID to track group membership
Use foreign keys to link tables together
Consider inde
SQL query to retrieve all unread messages upon user sign in
Use a JOIN statement to combine the messages and user tables
Filter the results to only show messages that have not been read by the user
Use the user's sign in information to identify which messages are unread
I am excited to join OLX because of its innovative approach to online marketplaces and its commitment to customer satisfaction.
I am impressed by OLX's user-friendly platform and its ability to connect buyers and sellers from all over the world.
I am excited to work with a team of talented developers who are passionate about creating cutting-edge technology.
I believe that OLX's focus on customer satisfaction aligns with ...
I have faced difficulties in debugging complex code and managing project timelines.
Debugging complex code with multiple dependencies
Managing project timelines with changing requirements
Working with legacy code and outdated technologies
Collaborating with team members in different time zones
Dealing with unexpected bugs and errors
I report to the Technical Lead and am part of the development team.
I report to the Technical Lead
I am part of the development team
Our website receives an average of 10,000 unique visitors per day.
Our website has a steady flow of traffic with a consistent number of unique visitors per day.
We use Google Analytics to track our web traffic and analyze user behavior.
Our peak traffic times are during weekdays from 9am to 5pm.
We have noticed an increase in mobile traffic over the past year.
Our website's traffic is primarily driven by organic search and
2 questions in 60 minutes
I applied via LinkedIn and was interviewed in Jul 2022. There were 2 interview rounds.
Q1 - array questions.
Q2 - Graph questions.
Q3 - DP questions
I was interviewed in Oct 2020.
Round duration - 90 minutes
Round difficulty - Medium
The test was conducted in the evening from 5:00 pm to 6:30 pm. Because of the covid situation, all the students attempted the test from their homes. But it was a webcam-based test to avoid any kind of cheating.
There were 3 coding problems to be done in 90 minutes.
After resume based shortlisting, 70 candidates were selected to appear for the test out of which 30 were shortlisted for interviews.
Determine if the third string contains all the characters from both the first and second strings in any order. If so, return "YES"; otherwise, return "NO".
Line ...
Check if the third string contains all characters from the first and second strings in any order.
Create a frequency map for characters in the first and second strings.
Check if all characters in the third string are present in the frequency map.
Ensure the count of characters in the third string matches the count in the frequency map.
Return 'YES' if all conditions are met, otherwise return 'NO'.
You are given a connected undirected unweighted graph comprising 'N' nodes and 'M' edges. In this graph, each pair of connected nodes is linked by exactly one undirected e...
Find the length of the shortest path visiting all nodes in a connected undirected unweighted graph.
Use Breadth First Search (BFS) to find the shortest path that visits all nodes at least once.
Maintain a bitmask to keep track of visited nodes and their states.
Consider all possible permutations of nodes to find the shortest path length.
Stark Industry is planning to organize meetings for various departments in preparation for Stark Expo. Due to limited rooms in Stark Tower, the goal is to alloca...
Determine the minimum number of conference rooms required for scheduling meetings.
Sort the meetings by start time.
Iterate through the meetings and keep track of rooms needed based on overlapping times.
Use a priority queue to efficiently allocate rooms.
Example: For meetings (1pm-4pm), (3pm-5pm), (4pm-6pm), 2 rooms are required.
Ensure linear time complexity by optimizing the room allocation process.
Round duration - 50 minutes
Round difficulty - Medium
This round started at 9 am and went till 4 pm.
Out of 70 students that appeared in online coding test, 30 were shortlisted for the first round (this round) of interviews.
In this round, everyone was asked one moderate level coding question. The interviewer provided the link to an IDE, where I wrote my code.
The interview started with the introduction being followed by 1 coding problem. In the end, the interviewer asked me if I wanted to ask any questions. To which I asked him my feedback so that I can improve my wear areas.
Of the 30 candidates, 17 were selected for the final interview round.
Given an array arr
containing 'N' distinct integers, your task is to generate all possible non-empty subsets of this array.
Note: While the elements within each subset should ...
Generate all possible non-empty subsets of an array of distinct integers.
Use recursion to generate all subsets by including or excluding each element in the array.
Maintain a current subset and add it to the result when reaching the end of the array.
Ensure elements within each subset are in increasing order.
Handle the input and output format as specified in the question.
Round duration - 50 minutes
Round difficulty - Easy
This was a technical + HR round. Started in the evening at 4:30 pm, this round went till 9:30 pm.
17 students were shortlisted for this final round of interview.
This interview was also virtual and involved both technical and HR-related questions. The interview started with an introduction and then questions based on my resume were asked.
Out of 17 candidates, 8 candidates got a full-time offer from Urban Company.
You are provided with a 2D matrix containing only the integers 0 or 1. The matrix has dimensions N x M, and each row is sorted in non-decreasing order. Your...
Find the row with the maximum number of 1's in a sorted 2D matrix.
Iterate through each row of the matrix and count the number of 1's in each row.
Keep track of the row index with the maximum number of 1's seen so far.
Return the index of the row with the maximum number of 1's.
If multiple rows have the same number of 1's, return the row with the smallest index.
Tip 1 : Coding Problems are asked from DSA, so a good practice of standard problems is a must. Revisit these problems before the interview to ace and crack the interview.
Tip 2 : To tackle the conceptual questions, you need to have thorough knowledge about the concepts, so to prepare for OS and DBMS, read one standard book.
Tip 3 : Have proper and clear knowledge about your project. Basic but tricky questions are asked based on the internship experience and the projects you have done.
Tip 1 : The best way to ace an interview is to take command of your interview in your hands. And this is done by having a balanced resume. Projects give direction to the interview and increase the probability of selection. So add at least 2 projects.
Tip 2 : Urban Company seeks team players and not just good coders. So add your achievements outside the academics to get shortlisted.
I was interviewed in Oct 2020.
Round duration - 75 minutes
Round difficulty - Medium
The test had 3 questions which had to solved in 75 minutes.The test was of medium difficulty.
Stark Industry is planning to organize meetings for various departments in preparation for Stark Expo. Due to limited rooms in Stark Tower, the goal is to alloca...
Determine the minimum number of conference rooms needed to schedule meetings without overlap.
Sort the meetings by start time.
Iterate through the meetings and keep track of the rooms in use.
If a meeting starts after another ends, it can reuse the same room.
If a meeting starts before another ends, a new room is needed.
Return the maximum number of rooms in use at any point.
You are provided with an integer X
and are tasked with identifying an integer Y
such that the bitwise XOR operation between X
and Y
yields the maximum possible value. The condition is t...
Find an integer Y such that XOR operation with X yields maximum value within given constraints.
Iterate from the most significant bit to find the highest bit that can be toggled to maximize XOR value.
To maximize XOR value, toggle the highest bit of X to 0 and all lower bits to 1.
Ensure the final Y does not exceed (2^61) - 1.
Example: For X = 3, the highest bit to toggle is at position 61, so Y = 2305843009213693950.
Examp...
You are provided with a non-decreasing array and an integer K. Your task is to remove exactly K elements from this array so that the maximum differenc...
Remove K elements from a non-decreasing array to minimize the maximum difference between adjacent elements.
Sort the array in non-decreasing order.
Iterate through the array and calculate the difference between adjacent elements.
Remove elements to minimize the maximum difference.
Return the minimized maximum difference.
Round duration - 60 minutes
Round difficulty - Easy
The interview was taken by SDE2 and she was very friendly. All the questions asked were related to DS and algo. The first 10 minutes were used for introductions and the last 5 minutes were reserved for any questions that I have. Always try to ask meaningful questions at the end of the interview.
Given a sorted array ARR
and a number X
, your task is to determine the count of occurrences of X
within ARR
.
X
is not found in the array, return...Count occurrences of a number in a sorted array efficiently.
Use binary search to find the first and last occurrence of the target number in the array.
Calculate the count of occurrences by subtracting the indices of the last and first occurrences.
Handle cases where the target number is not found in the array.
Time complexity: O(log(N)), Space complexity: O(1).
You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:
Find the minimum time required to rot all fresh oranges in a grid.
Use Breadth First Search (BFS) to simulate the rotting process
Track the time taken to rot all oranges and return -1 if any fresh oranges remain
Handle edge cases such as no fresh oranges or all oranges already rotten
Consider using a queue to efficiently process neighboring oranges
Given a linked list where each node has two pointers: one pointing to the next node and another which can point randomly to any node in the list or ...
Yes, the cloning of a linked list with random pointer can be accomplished without utilizing extra space.
Use a hashmap to store the mapping between original nodes and cloned nodes.
Iterate through the original linked list to create the cloned linked list by mapping the random pointers using the hashmap.
Time complexity of this approach is O(N) where N is the number of nodes in the linked list.
Round duration - 60 minutes
Round difficulty - Medium
The focus of this round was mainly on my projects and internships. It was taken by a Senior SDE and it more of a technical interaction. I was asked in-depth about my projects and most of the questions asked around OS/DBMS were based on my projects.
The interviewer wanted to judge whether I have core knowledge about subjects like OS and DBMS and also about the projects that I had done.
Round duration - 60 minutes
Round difficulty - Easy
It was the culture fit round taken by the Director of Engineering.
Tip 1 : Learn the concepts, not the solutions.
Tip 2 : You should have deep knowledge about the projects mentioned in your resume.
Tip 1 : Resume should be only 1 page.
Tip 2 : Try to tell a story through your resume. For eg - always mention the impact or scale of your projects/internship.
I applied via Campus Placement and was interviewed in Sep 2023. There were 3 interview rounds.
Seat reservation system
bit manipulation
binary tree related
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