C# Online Test

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The C# online test assesses candidates' knowledge of programming in the C# language and their ability to leverage commonly used parts of the .NET framework's class library.

It's an ideal test for pre-employment screening. A good C# developer needs to be able not only to solve problems using C# but also recognize when to leverage the functionality provided by the .NET framework's class library to write robust and maintainable code.

This online test requires candidates to solve coding problems in C# and find and fix bugs in a C# program.

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.NET Developer
Back-End Developer
C# Developer
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Sample Free Questions

Alert Service

10min
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Easy  
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CODE

C# Refactoring Public

Refactor the AlertService and AlertDAO classes:

  • Create a new interface, named IAlertDAO, that contains the same methods as AlertDAO.
  • AlertDAO should implement the IAlertDAO interface.
  • AlertService should have a constructor that accepts IAlertDAO.
  • The RaiseAlert and GetAlertTime methods should use the object passed through the constructor.

Merge Names

10min
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Easy  
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CODE

C# Arrays Public

Implement the UniqueNames method. When passed two arrays of names, it will return an array containing the names that appear in either or both arrays. The returned array should have no duplicates.

For example, calling MergeNames.UniqueNames(new string[]{'Ava', 'Emma', 'Olivia'}, new string[]{'Olivia', 'Sophia', 'Emma'}) should return an array containing Ava, Emma, Olivia, and Sophia in any order.

Palindrome

10min
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Easy  
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CODE

C# Strings Public

A palindrome is a word that reads the same backward or forward.

Write a function that checks if a given word is a palindrome. Character case should be ignored.

For example, IsPalindrome("Deleveled") should return true as character case should be ignored, resulting in "deleveled", which is a palindrome since it reads the same backward and forward.

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Prefix, Bicycle, Classroom, Runner, Disposable Wrapper, Needle, Log Parser, Driver Exam, Vectors, Crop Ratio, Chicken, Racer, Paragraph, Username, Chain Link, Hobbies, Sort Params, Node, Programmer Teacher, Read First Line, Product Refactoring, Snapshot, Date Transform, Document Store, Procedural Generator, Document Counter, Internal Nodes, Window Manager, Moving Total, Entry, Unique Numbers, Rare, Paper Strip, Max Sum, Friend, Remove Repetitions, Unique Name, Log Patch, Stories, Train, Platformer, Shipping, Segment, Eye of the Storm, Chinese Box, Weighted Average, Shining Star, Unloading Trucks, Adder, Shelf, Stack to List, Read Write Execute
Skills
C# LINQ Language Bug fixing Memory management OOP Stream Strings Serialization Exceptions Arithmetic Searching Multithreading Data structures Arrays Iteration Refactoring Random Algorithmic thinking Graphs Extension methods Dynamic programming TDD Sorting Test case design
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