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I applied via Referral and was interviewed before Sep 2020. There were 3 interview rounds.
REPL stands for Read-Eval-Print-Loop. It is an interactive console for executing JavaScript code in Node.js.
REPL provides a way to test and debug code snippets quickly.
It can be accessed by running the 'node' command in the terminal.
REPL supports features like auto-completion, history, and syntax highlighting.
It can be used to experiment with Node.js APIs and modules.
REPL can also be used to interact with databases and...
Node JS supports various datamodels including relational and NoSQL databases.
Node JS supports ORM libraries like Sequelize for relational databases.
Mongoose is a popular ODM for MongoDB in Node JS.
NoSQL databases like Cassandra and Redis can also be used with Node JS.
Datamodels can be defined using schemas and models in Node JS.
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posted on 31 May 2022
I appeared for an interview in Apr 2022.
Round duration - 75 minutes
Round difficulty - Medium
Test Comprises of 3 coding questions and some MCQs
Round duration - 60 minutes
Round difficulty - Medium
2 coding questions of (1 easy and 1 medium level) on hackerrank code-pair with the Interviewer
Round duration - 60 minutes
Round difficulty - Easy
This Round was based on CS fundamentals and One coding question was there as a Code-pair.
Given a list of integers of size N
, your task is to determine the Next Greater Element (NGE) for every element. The Next Greater Element for an element X
is the firs...
Find the Next Greater Element for each element in a list of integers.
Iterate through the list of integers from right to left.
Use a stack to keep track of elements whose NGE is yet to be found.
Pop elements from the stack until a greater element is found or the stack is empty.
Assign the NGE as the top element of the stack or -1 if the stack is empty.
Tip 1 : Require coding skills to pass the interview.
Tip 2 : Brush up on Java Skills
Tip 3 : Brush up on OOPS
Tip 1 : Keep it to one page
Tip 2 : Mention relevant skills as per the job
I appeared for an interview in Apr 2025, where I was asked the following questions.
A multithreaded environment allows multiple threads to execute concurrently, improving application performance and responsiveness.
Thread Management: Use thread pools to manage threads efficiently, reducing overhead from frequent thread creation and destruction.
Synchronization: Implement synchronization mechanisms (like mutexes or semaphores) to prevent race conditions when accessing shared resources.
Concurrency Control...
Locking mechanisms in multithreaded environments prevent deadlock by managing access to critical sections effectively.
Mutexes: A mutual exclusion lock that allows only one thread to access a resource at a time, preventing race conditions.
Semaphores: A signaling mechanism that controls access to a resource by maintaining a count, allowing multiple threads to access it up to a limit.
Read/Write Locks: These allow multiple...
I appeared for an interview in Apr 2021.
Round duration - 90 minutes
Round difficulty - Hard
Timing was late evening. Platform was good.
Given a maze represented by 'N' cells numbered from 0 to N-1, and an array arr
of 'N' integers where arr[i]
denotes the cell number that can be reached from the 'i'...
Identify the length of the largest cycle in a maze represented by cells and an array of integers.
Iterate through each cell and find the cycle length using DFS or Floyd's Tortoise and Hare algorithm.
Handle self-cycles and cells with no exit by checking arr[i] = i and arr[i] = -1 respectively.
Output the length of the largest cycle found or -1 if no cycles exist.
Ninja is stuck in a maze represented as a 2D grid. He can move in four directions (Up, Down, Left, Right) until he hits a wall ('1'). Once stopped, he can choose a new...
Determine if Ninja can reach the destination in a maze by moving in four directions until hitting a wall.
Create a function to traverse the maze using depth-first search or breadth-first search.
Keep track of visited cells to avoid infinite loops.
Return 'True' if destination is reachable, 'False' otherwise.
Tip 1 : Do some projects.
Tip 2 : Practice dynamic programming.
Tip 1 : Keep it short.
Tip 2 : Do not put false things on resume.
I appeared for an interview in Apr 2021.
Round duration - 90 minutes
Round difficulty - Hard
Timing was late evening . Platform was good.
Given a maze represented by 'N' cells numbered from 0 to N-1, and an array arr
of 'N' integers where arr[i]
denotes the cell number that can be reached from the 'i'...
Identify the length of the largest cycle in a maze represented by cells and an array of integers.
Iterate through each cell and find the cycle length using DFS or Floyd's Tortoise and Hare algorithm.
Keep track of visited cells to avoid infinite loops.
Return the length of the largest cycle found or -1 if no cycles exist.
Tip 1 : Do some projects
Tip 2 : Be good in data structure
Tip 1 : Keep it short
Tip 2 : Don't try to add false things.
I appeared for an interview in Mar 2021.
Round duration - 90 minutes
Round difficulty - Medium
The coding round was 90 minutes with 2 question and the difficulty was mid-range and both were graph question
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...
Find all possible paths for a rat in a maze from start to destination.
Use backtracking to explore all possible paths in the maze.
Keep track of visited cells to avoid revisiting them.
Explore all possible directions (up, down, left, right) from each cell.
Add the current direction to the path and recursively explore further.
When reaching the destination, add the path to the list of valid paths.
Tip 1 : Practice question and try to understand with using javascript
Tip 2 : The Elm Architecture.
Tip 3 : Project matters
Tip 1 : Have web development project
Tip 2 : learn purescript and node.js
3 Graph Questions Were asked of difficulty medium to hard.
Hackathon round which revolved around multithreading
I applied via Campus Placement and was interviewed in Feb 2024. There were 3 interview rounds.
They have their own coding platform. The questions are basically from tree.
Tree of space question
Leecode medium level question
Leetcode Hard level Question
I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.
Computer Fundamentals
Flatten a binary tree by converting it into a linked list in-place.
Use a recursive approach to flatten the binary tree.
Traverse the tree in a pre-order manner and keep track of the previous node.
Set the left child of each node to null and the right child to the next node in the linked list.
Example: Input: 1 -> 2 -> 5 -> 3 -> 4 -> null, Output: 1 -> null -> 2 -> null -> 3 -> null -> 4 -> null -> 5 -> null
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