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C++ (Coding): Data Structures & Objects Test

The C++ (Coding): Data Structures & Objects Test evaluates a candidate's proficiency in C++ with a focus on data structures and object-oriented programming. The test includes scenario-based MCQs to assess knowledge of C++ concepts and a coding question to evaluate hands-on programming skills. This test is ideal for roles requiring expertise in C++ and data structures.

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Screen candidates with a 30 mins test

Test duration:  ~ 30 mins
Difficulty level:  Moderate
Availability:  Available as custom test
Questions:
  • 5 Scala MCQs
  • 1 Scala Coding Question
Covered skills:
Data Structures
Objects and Classes
Pointers and Memory Management
Inheritance and Polymorphism
Templates and Generics
STL (Standard Template Library)
Algorithms
File Handling
Recursion
Exception Handling
Operator Overloading
Abstract Classes and Interfaces
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The C++ (Coding): Data Structures & Objects Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Demonstrate proficiency in implementing and manipulating complex data structures in Scala
  • Exhibit strong understanding of object-oriented programming principles and their application in Scala
  • Showcase ability to effectively use Scala's functional programming features
  • Display competence in handling collections and sequence operations efficiently
  • Demonstrate skill in working with Scala's pattern matching capabilities
  • Show proficiency in utilizing Scala's type system and generic programming concepts
  • Exhibit understanding of concurrent programming concepts in Scala
  • Showcase ability to implement and work with traits for code reuse and composition
  • Display competence in error handling and exception management in Scala
  • Demonstrate proficiency in using Scala's standard library and common third-party libraries
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Screen candidates with the highest quality questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 15,000+ questions. The actual questions on this C++ (Coding): Data Structures & Objects Test will be non-googleable.

🧐 Question

Medium

placeholder method
Solve
Review the following Scala code. “placeholder” is a placeholder function to be replaced with an actual Scala in-built method. 
 image
What should ‘placeholder’ be so that the a, b, c in the code evaluate to true?

Medium

Compilation Errors
Solve
Which lines in the following Scala code will lead to compilation errors?
 image

Easy

take and reduceLeft
List
String
Solve
What will the following Scala code print?
 image
🧐 Question🔧 Skill

Medium

placeholder method

2 mins

Scala
Solve

Medium

Compilation Errors

2 mins

Scala
Solve

Easy

take and reduceLeft
List
String

2 mins

Scala
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
placeholder method
Scala
Medium2 mins
Solve
Compilation Errors
Scala
Medium2 mins
Solve
take and reduceLeft
List
String
Scala
Easy2 mins
Solve

Test candidates on core C++ (Coding): Data Structures & Objects Hiring Test topics

Data Structures: Data structures such as arrays, linked lists, stacks, and queues are fundamental for organizing and managing data efficiently. Mastery of data structures is essential for solving complex algorithmic problems and optimizing the performance of software applications.

Objects and Classes: Understanding objects and classes is crucial for leveraging the principles of Object-Oriented Programming (OOP). This skill is vital for designing scalable and maintainable software using encapsulation, inheritance, and polymorphism.

Pointers and Memory Management: Pointers allow fine-grained control over memory allocation and deallocation in C++. Proper use of pointers is key to efficient memory management and avoiding leaks and segmentation faults.

Inheritance and Polymorphism: Inheritance enables a class to inherit properties and methods from another class, promoting code reuse. Polymorphism allows objects to be treated as instances of their parent class, enhancing flexibility and integration of systems.

Templates and Generics: Templates in C++ allow functions and classes to operate with generic types, increasing code utility and type safety. This skill is important for writing reusable and type-agnostic code components.

STL (Standard Template Library): The STL provides a collection of pre-built classes and functions for common data structures and algorithms. Proficiency in STL accelerates development and ensures the use of well-tested implementations.

Algorithms: Algorithms are step-by-step procedures for calculations, data processing, and automated reasoning. Implementing efficient algorithms is critical for performance optimization and problem-solving in programming.

File Handling: File handling involves reading from and writing to files, which is essential for data persistence, logging, and configuration. Competence in file handling ensures robust data interaction and storage capabilities.

Recursion: Recursion is a technique where a function calls itself to solve smaller instances of a problem. Understanding recursion is important for solving problems with a naturally recursive structure, such as tree traversals.

Exception Handling: Exception handling focuses on responding to runtime errors with mechanisms like try, catch, and throw. Effective exception handling is critical for building resilient and fault-tolerant applications.

Operator Overloading: Operator overloading allows custom implementation of operators for user-defined types, enhancing code readability and usability. This skill is useful for creating intuitive and expressive class interfaces.

Abstract Classes and Interfaces: Abstract classes and interfaces define methods that derived classes must implement, enforcing a consistent interface across diverse implementations. This is fundamental for large system designs and enforcing design contracts.

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Have questions about the C++ (Coding): Data Structures & Objects Hiring Test?

What roles can I use the C++ (Coding): Data Structures & Objects Assessment Test for?

Here are few roles for which we recommend this test:

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Can I combine C++ (Coding): Data Structures & Objects Test with JavaScript & HTML/CSS Test?

Yes, recruiters can request a single custom test with multiple skills in the same test. For instance, you can combine it with the JavaScript & HTML/CSS Test to assess front-end skills.

How to use C++ (Coding): Data Structures & Objects Test in my hiring process?

Add this test as a pre-screening tool at the start of recruitment. Include the test link in your job post or directly invite candidates via email.

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

What is the cost of using this test?

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What is C++ (Coding): Data Structures & Objects Test?

The C++ (Coding): Data Structures & Objects Test evaluates a candidate's proficiency in C++ programming focusing on data structures and object-oriented programming. It's used by recruiters to find candidates with strong C++ skills.

What kind of questions are used to evaluate senior candidates in the C++ test?

Senior roles are assessed on skills like overloading operators, designing abstract classes, optimizing performance, advanced data structures, and implementing design patterns.

What are the main C++ tests?
Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
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  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

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Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

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