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Currency conversion use case diagram for Tech Lead interview
Actors: User, Currency Converter System
Use Cases: Enter amount, Select source currency, Select target currency, Convert currency, Display converted amount
Relationships: User interacts with Currency Converter System to perform currency conversion
Include: Error handling for invalid inputs
Extend: Historical exchange rate lookup feature
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I applied via Recruitment Consulltant and was interviewed in Nov 2024. There were 3 interview rounds.
I applied via LinkedIn and was interviewed in Nov 2024. There were 2 interview rounds.
I was interviewed in Nov 2024.
Questions about java concurrency framework, java 8 and 11 features, Code chef coding problem
Using a crypto price API to fetch and display real-time cryptocurrency prices in a machine coding project.
Utilize a crypto price API to fetch real-time cryptocurrency prices
Implement error handling for API requests
Display the fetched prices in a user-friendly format
posted on 8 Jan 2025
Solid principles are a set of design principles that help make software more maintainable, flexible, and scalable.
Single Responsibility Principle (SRP) - A class should have only one reason to change.
Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.
Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses wi...
Code snippet for Entity Framework DB connection
Install Entity Framework NuGet package
Create a DbContext class
Define DbSet properties for each entity
Configure connection string in app.config/web.config
Use DbContext to interact with the database
To get the 3rd highest salary, we can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.
Use a SQL query with 'ORDER BY salary DESC' to sort salaries in descending order.
Use 'LIMIT 1 OFFSET 2' to skip the first two highest salaries and get the 3rd highest salary.
Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;
Interfaces in C# provide a way to define a contract for classes to implement, promoting code reusability and flexibility.
Interfaces allow for multiple inheritance in C# by allowing a class to implement multiple interfaces.
Interfaces help in achieving loose coupling between classes, making the code more maintainable and testable.
Interfaces are used to define common behavior that multiple classes can share, promoting cod...
I applied via Approached by Company and was interviewed in Nov 2023. There were 4 interview rounds.
Hackerrank test with combination of MCQ and java program coding.
I applied via Recruitment Consulltant and was interviewed in Sep 2023. There were 2 interview rounds.
Builder design pattern is a creational design pattern used to construct complex objects step by step.
Builder pattern separates the construction of a complex object from its representation.
It allows the same construction process to create different representations of the object.
Useful when there are multiple ways to construct an object or when the object creation process is complex.
Example: StringBuilder in Java allows ...
JOIN query to retrieve country and employee name
Use JOIN keyword to combine data from multiple tables
Specify the columns to select from each table
Use ON keyword to specify the relationship between the tables
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