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Program to print binary tree bottom view
Traverse the tree in level order and store the horizontal distance of each node from the root
Store the nodes in a map with their horizontal distance as key
Print the nodes in the map in ascending order of their horizontal distance
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I applied via LinkedIn and was interviewed in Oct 2022. There were 5 interview rounds.
HLD, LLD, basic HTML, CSS, react, web optimization, web-performance
I applied via Recruitment Consulltant and was interviewed before Jul 2023. There were 4 interview rounds.
Dsa question about maps
Robotic restaurant design for automated food preparation and delivery
Implement robotic arms for cooking and food preparation
Utilize conveyor belts for transporting dishes to customers
Incorporate automated order taking and payment systems
Design a user-friendly interface for customers to place orders and customize meals
Ensure efficient cleaning and maintenance processes for the robots
Achieve fault tolerance by implementing redundancy, monitoring systems, and graceful degradation.
Implement redundancy by having backup systems in place to take over in case of failure
Monitor systems continuously to detect faults and address them proactively
Use graceful degradation to ensure that the system remains functional even if certain components fail
Design coupon system based on reqs
I applied via Campus Placement
It was a 90 minute coding test, involving 3 problems:
1-Given points on a 2d plane, you can delete one point, what is the minimum maximum distance you can have?
2-LFU Cache
3-Given an array with elements 0,1, your task is to find number of ways to divide this array into contiguous chunks so that each chunk has only one 1 in it.
To avoid method overriding, make the method final or private.
Declare the method as final to prevent it from being overridden in subclasses.
Declare the method as private to hide it from subclasses.
Use the @Override annotation to ensure that a method is actually overriding a superclass method.
The 'finalize' keyword is used in Java to perform cleanup operations before an object is garbage collected.
The 'finalize' method is called by the garbage collector before reclaiming an object's memory.
It can be used to release resources like closing files or sockets.
It is not recommended to rely on 'finalize' for resource cleanup as it is not guaranteed to be called.
I applied via Referral and was interviewed before Dec 2022. There were 2 interview rounds.
I applied via Referral and was interviewed in Oct 2024. There was 1 interview round.
Node.js is a runtime environment that executes JavaScript code outside of a web browser.
Node.js uses the V8 JavaScript engine from Google Chrome to execute code.
It is built on the event-driven, non-blocking I/O model, making it lightweight and efficient.
Node.js uses a single-threaded event loop to handle multiple concurrent connections.
It has a built-in module system that allows developers to easily add functionality t
I applied via Campus Placement
DSA Hackerrank assessment
The 2sum problem involves finding two numbers in an array that add up to a given target.
One approach is to use a hash table to store the complement of each number as we iterate through the array.
Another approach is to sort the array and use two pointers, one starting from the beginning and the other from the end, to find the pair.
If the array is sorted, we can also use binary search to find the complement of each numbe
I applied via LinkedIn and was interviewed before Feb 2023. There were 2 interview rounds.
It was for low level design for cart system
Technical questions in general in OOB, design patters and solid principles
QA Engineer
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TNQ Tech Private Limited
OMICS International
Amar Ujala
Xerox