C# Online Test
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The C# online test assesses knowledge of programming in the C# language through a series of live coding problems.
The assessment includes work-sample tasks such as:
- Working with classes, objects, and interfaces to write reusable code.
- Implementing and properly using algorithms and data structures to optimize application performance.
- Using components provided by the .NET framework class library.
A good C# developer needs a solid understanding of the C# programming language as well as the .NET framework class library and its functionality to write robust and maintainable code.
Sample public questions
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.
Implement a function FolderNames, which accepts a string containing an XML file that specifies folder structure and returns all folder names that start with startingLetter. The XML format is given in the example below.
For example, for the letter 'u' and XML file:
<?xml version="1.0" encoding="UTF-8"?>
<folder name="c">
<folder name="program files">
<folder name="uninstall information" />
</folder>
<folder name="users" />
</folder>
the function should return "uninstall information" and "users" (in any order).
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58 more premium C# questions
Max Sum, Product Refactoring, Sort Params, Nullable Employee, Fire Dragon, Animal Hierarchy, Racer, Read First Line, Prefix, Bicycle, Chinese Box, Car Rental, Eye of the Storm, Document Store, Snapshot, Shipping, Moving Total, Book Sale, Driver Exam, Ingredient Tuple, Classroom, Unique Product, Username, Weighted Average, Kilometer Converter, Stack to List, Document Counter, Disposable Wrapper, Platformer, String Occurrence, Hobbies, Vectors, Language Teacher, Read Write Execute, Node, Friend, Patient Class, Internal Nodes, Crop Ratio, Unique Numbers, Wheel Defects, Shining Star, Log Parser, Shelf Test, Chain Link, Log Patch, Worker, Veterinarian, Date Transform, Window Manager, Ceramic Store, Stories, Paper Strip, Segment, Procedural Generator, XML Navigation, Flight Connections, Paragraph.
Skills and topics tested
- C#
- Algorithmic Thinking
- Accessibility Levels
- OOP
- Refactoring
- Pass by Reference
- Null Coalescing Operator
- Null Conditional Operator
- Higher Order Function
- Interfaces
- Abstract Class
- Multithreading
- Synchronization
- Exceptions
- LINQ
- Field Modifiers
- Data Structures
- Sorting
- Bug Fixing
- Language
- Lists
- Arithmetic
- HashSet
- Dictionary
- Tuples
- Properties
- Regex
- Strings
- Inheritance
- Method Overriding
- Complexity
- Stack
- Destructors
- Memory Management
- Linked List
- Stream
- Iteration
- Arrays
- Recursion
- Tree
- Graphs
- Integer Division
- StringBuilder
- TDD
- Serialization
- XML
- Test Case Design
- Unit Testing
- Extension Methods
- Queue
- Dynamic Programming
- Random
- Dynamic Objects
For job roles
- .NET Developer
- Back-End Developer
- C# Developer
- Web Developer
Sample candidate report
What others say
Simple, straight-forward technical testing
TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.
Jan Opperman, Grindrod Bank
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