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2 questions were given , one was easy, other one leetcode hard
A class is a blueprint for creating objects in object-oriented programming. Basic OOP concepts include encapsulation, inheritance, and polymorphism. SQL concepts include querying databases using SQL commands.
A class is a template for creating objects with properties and methods.
Encapsulation is the concept of bundling data and methods that operate on the data within a single unit.
Inheritance allows a class to inherit p...
Polymorphism is the ability of a function or method to behave differently based on the object it is called with.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).
Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.
Example: A met...
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Coding , decoding, numerical
I applied via Company Website and was interviewed in Oct 2021. There were 2 interview rounds.
I applied via Recruitment Consulltant and was interviewed before Mar 2022. There were 5 interview rounds.
Mettle Test based on DP based approach
Design a distributed queue similar to Kafka.
Use a distributed architecture with multiple brokers and partitions.
Implement a publish-subscribe model for producers and consumers.
Ensure fault tolerance and high availability through replication and leader election.
Use a log-based storage system for messages and offsets.
Provide support for message ordering and retention policies.
Implement a scalable and efficient message de...
Design a Price Tagger System
Identify the products to be tagged with prices
Determine the pricing strategy (e.g. cost-plus, value-based, etc.)
Choose the appropriate tagging technology (e.g. barcode, RFID, etc.)
Develop a user-friendly interface for tagging and updating prices
Implement a database to store product and pricing information
Integrate with point-of-sale systems for accurate pricing at checkout
I applied via LinkedIn and was interviewed before Oct 2023. There were 2 interview rounds.
1 hour in testing problem solving and basic math
Coding round with graph and tree questions
I applied via Approached by Company and was interviewed in Mar 2024. There was 1 interview round.
The rain water problem involves calculating the amount of rainwater that can be trapped between buildings or structures.
Calculate the maximum height of water that can be trapped at each position
Subtract the height of the building at each position to get the water level
Sum up the water levels at each position to get the total amount of trapped rainwater
Designing search systems involves creating efficient algorithms and data structures to quickly retrieve relevant information.
Understand the data structure of the search system (e.g. inverted index, trie)
Implement efficient search algorithms (e.g. binary search, hash tables)
Consider scalability and performance optimization techniques (e.g. caching, indexing)
Include user-friendly features like autocomplete and spell corr...
I applied via Referral and was interviewed before Mar 2023. There was 1 interview round.
Basic coding test from hackerearth.
I applied via Referral and was interviewed before Mar 2023. There was 1 interview round.
The Dutch Flag problem involves sorting an array of strings with three possible values in a specific order.
Create three pointers to keep track of the boundaries of each color group
Iterate through the array and swap elements to group them in the correct order
Time complexity of O(n) can be achieved by a single pass through the array
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