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I applied via Company Website
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I was interviewed in Dec 2021.
Round duration - 60 Minutes
Round difficulty - Medium
Time - afternoon.
Interviewer jumped straight into interview, formal and comfortable environment.
1. Interviewer introduction
2. Interviewee introduction
3. Coding question 1 - difficulty medium, topic - arrays
- explain approach, write code (pseudo code is fine), dry run on given TCS.
4. Coding question 2 - same as above, only question was different. Slightly more difficult but on arrays only.
5. Questions on Python & Django - difficulty medium - write code related to queryset on django objects
6. SQL question to code - 10th highest salary.
You are given a string S
. The task is to reverse the letters of the string while keeping non-alphabet characters in their original position.
S = "...
Reverse the letters of a string while keeping non-alphabet characters in their original position.
Iterate through the string and store the non-alphabet characters in their original positions
Reverse the letters of the string using two pointers technique
Combine the reversed letters with the non-alphabet characters to get the final reversed string
Given an array arr
that contains an equal number of positive and negative elements, rearrange the given array such that positive and negative numbers are arranged a...
Rearrange an array with equal positive and negative numbers alternatively while maintaining relative order.
Iterate through the array and separate positive and negative numbers into two separate arrays.
Merge the two arrays alternatively into the original array.
Ensure the relative order of positive and negative numbers is maintained.
Round duration - 60 Minutes
Round difficulty - Medium
1. Intro of interviewer
2. Intro of interviewee
3. Questions on Python - decorators, static method, class methods
4. Principal of coding, best practices
5. Question on DB - What is indexing, how to improve, best use of indexing.
6. Questions on django - what is django ORM, What is sandbox, Django models, Django queries.
7. Previous job, what do you do, stack you work on.
Very friendly environment, very pleasing person, loved it.
Tip 1 : Good at coding (solving, explaining), especially Dynamic Programming questions like knapsack. Focus 70% time on coding
Tip 2 : Apply to jobs through referral not on company site. Very important.
Tip 3 : Prepare good projects with how to explain in interview.
Tip 4 : Sound very energetic, competitive and some one with eager to learn, so they select you thinking you can be taught things as you have good attitude.
Remember : Good attitude in good coder > Bad attitude in expert coder.
Tip 1 : Max three, projects, which are interesting to talk about, and you have won something for it.
Tip 2 : Leave lot of white space, keep content small and in one page
There was a Hackerearth test with two questions
I applied via Referral and was interviewed in Feb 2021. There were 4 interview rounds.
I was interviewed in Jun 2021.
Round duration - 90 minutes
Round difficulty - Medium
Contained mix of coding, oops and general programming questions
Coding was live coding round
It was around 12pm
They used their own coding environment, I coded in java
Given an array arr
of length N
consisting of integers, find the sum of the subarray (including empty subarray) with the maximum sum among all subarrays.
Find the sum of the subarray with the maximum sum among all subarrays in an array of integers.
Iterate through the array and keep track of the maximum sum subarray seen so far.
Use Kadane's algorithm to efficiently find the maximum subarray sum.
Consider the case where all elements in the array are negative.
Handle the case where the array contains only one element.
Round duration - 90 Minutes
Round difficulty - Hard
It was a collection of HLD AND LLD
Was around 12pm
This was conducted on bluejeans
Design a URL shortener with database and necessary components
Use a unique identifier for each URL to generate short links
Store the original URL and corresponding short link in a database
Implement a redirect mechanism to redirect short links to original URLs
Consider implementing analytics to track usage and performance
Ensure scalability and reliability of the system
Round duration - 60 Minutes
Round difficulty - Easy
It was a friendly managerial round with director of my team, he was very for me to come on board and explained truthfully how payu is.
Round duration - 30 Minutes
Round difficulty - Easy
Just a normal HR discussion, he informed me that I've been selected and we discussed about the salary part
Tip 1 : have strong grasp of graph based algorithms
Tip 2 : have strong knowledge of data structure
Tip 3 : should be able to find where to use appropriate design pattern
Tip 1 : keep it short and simple
Tip 2 : focus more on design/architecture of project
I applied via Campus Placement
Coding round consisted of three problems with easy to moderate level difficulty.
Minimum number of platforms required for a railway station depends on the maximum number of trains arriving and departing at the same time.
Calculate the maximum number of trains arriving and departing at the same time.
Determine the time intervals for each train's arrival and departure.
Add extra platforms for buffer and unexpected delays.
Consider factors like train length, frequency, and scheduling conflicts.
Example: If...
Rearrange array with negative numbers at the beginning
Iterate through the array and move negative numbers to the beginning
Use two pointers approach to swap elements
Maintain the order of negative numbers while shifting them to the beginning
A simple program using multithreading can be implemented to demonstrate parallel execution of tasks.
Create a class that implements the Runnable interface in Java.
Override the run() method to define the task that will run in a separate thread.
Create instances of the class and start them using the Thread class.
Use synchronization mechanisms like locks or semaphores to manage shared resources in a thread-safe manner.
Java Collections API provides a set of classes and interfaces to store and manipulate collections of objects.
Includes interfaces like List, Set, and Map for different types of collections
Provides classes like ArrayList, HashSet, and HashMap for implementing collections
Offers utility classes like Collections for common operations on collections
Introduced in Java 2 and has been expanded in subsequent versions
Leetcode medium questions using priority queue. I don't remeber exact now
I applied via Campus Placement and was interviewed before May 2023. There were 3 interview rounds.
3 Coding problems to be solved in 90 minutes.
based on 1 interview
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