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C++ Algorithms Online Test

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The C++ Algorithms online test assesses candidates' algorithmic thinking skills and their ability to implement algorithms using C++.

It's an ideal test for pre-employment screening. A good developer will be able to design and implement algorithms that are both correct and efficient. Computational complexity is important not only when scaling applications but when creating responsive, maintainable, and efficient code.

This online test requires candidates to analyze or design an algorithm using C++ as the programming language.

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Free Sample Questions for C++ Algorithms Test

Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.

Merge Names

10min
  -  
Easy  
  -  
CODE

C++ Arrays Public

Implement the unique_names method. When passed two vectors of names, it will return a vector containing the names that appear in either or both vectors. The returned vector should have no duplicates.

For example, calling unique_names(std::vector<std::string>{"Ava", "Emma", "Olivia"}, std::vector<std::string>{"Olivia", "Sophia", "Emma"}) should return a vector containing Ava, Emma, Olivia, and Sophia in any order.

Binary Search Tree

15min
  -  
Easy  
  -  
CODE

C++ Algorithmic thinking Recursion Tree Public

A three-node binary tree.Binary search tree (BST) is a binary tree where the value of each node is larger or equal to the values in all the nodes in that node's left subtree and is smaller than the values in all the nodes in that node's right subtree.

Write a function that, efficiently with respect to time used, checks if a given binary search tree contains a given value.

For example, for the following tree:

  • n1 (Value: 1, Left: null, Right: null)
  • n2 (Value: 2, Left: n1, Right: n3)
  • n3 (Value: 3, Left: null, Right: null)

Call to contains(n2, 3) should return true since a tree with root at n2 contains number 3.

User Input

15min
  -  
Easy  
  -  
CODE

C++ Inheritance OOP Public

User interface contains two types of user input controls: TextInput, which accepts all characters and NumericInput, which accepts only digits.

Implement the following methods:

  • add on class TextInput - adds the given character to the current value
  • getValue on class TextInput - returns the current value
  • add on class NumericInput - overrides the base class method so that each non-numeric character is ignored

For example, the following code should output "10":

TextInput* input = new NumericInput();
input->add('1');
input->add('a');
input->add('0');
std::cout << input->getValue();
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Premium Questions for C++ Algorithms Test

TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.

Question Names

These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.

Max Sum, Paper Strip, Veterinarian, Internal Nodes, Platformer, Unique Product, Unique Numbers, Window Manager, Book Sale, Friend, Stories, Moving Total
Covered Skills

Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.

C++ Algorithmic thinking Vector Queue Arrays Tree Data structures Linked list Unordered map Sorting Graphs Dynamic programming Unordered set
Recommended Job Roles

These are the job roles that we recommend for the C++ Algorithms online test.

Back-End Developer
C++ Developer

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