JOBSEEKER?

C++ Algorithms and SQL Online Test

TestDome skill assessments are used by more than 7,000 companies and 450,000 individual test takers.

For Jobseekers

Practice your skills and earn a certificate of achievement when you score in the top 25%.

Take a Practice Test

For Companies

Test how candidates think, strategize, and problem solve so you can interview the best.

Sign Up to Offer This Test

TestDome Skill Assessments

Used by over 450,000 jobseekers

Trusted by over 7,000 companies

Premium questions with real-world problems

The C++ Algorithms and SQL online test assesses candidates' knowledge of SQL queries and evaluates their algorithmic-thinking skills using C++.

It's an ideal test for pre-employment screening. A good developer should be able to work closely with the database layer and solve back-end problems where any improvement to computational complexity would produce a significantly more efficient solution.

This online test requires candidates to design and analyze algorithms using C++ and to write SQL queries that extract, combine, and manipulate data.

TestDome is trusted by businesses large and small

We’re top rated for our tests’ quality and reasonable completion time

Take The Test
Practice your skills.
Offer This Test
Sign up for a trial plan.
Free Sample Questions for C++ Algorithms and SQL Test

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

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.

Students

3min
  -  
Easy  
  -  
CODE

SQL Aggregation Select Public

Given the following data definition, write a query that returns the number of students whose first name is John. String comparisons should be case sensitive.

TABLE students
   id INTEGER PRIMARY KEY,
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL

Two Sum

30min
  -  
Easy  
  -  
CODE

C++ Algorithmic thinking Unordered map Public

Write a function that, when passed a list and a target sum, returns, efficiently with respect to time used, two distinct zero-based indices of any two of the numbers, whose sum is equal to the target sum. If there are no two numbers, the function should return (-1, -1).

For example, findTwoSum({ 3, 1, 5, 7, 5, 9 }, 10) should return a std::pair<int, int> containing any of the following pairs of indices:

  • 0 and 3 (or 3 and 0) as 3 + 7 = 10
  • 1 and 5 (or 5 and 1) as 1 + 9 = 10
  • 2 and 4 (or 4 and 2) as 5 + 5 = 10
Take The Test
Practice your skills.
View Test Pricing
Pick the number of tests you need.
Pass/fail grouping

Our tests are designed to put candidates into either the pass group or the fail group so you can find the best candidates faster.

Full customization

We have pre-built tests and questions, but you can customize them however you like. Change the pass/fail scores, time requirements, and more.

Cheating protection

Use tests that solve real-world problems, with no answers that can be easily found online. Because we test performance and skills (not information), we allow the use of online resources, just like in real life. Copy/paste prevention and online proctoring via webcam prevent cheating.

Candidate reporting

Get an overview into the percentage of passes and fails. Then dive deeper into the results of your top candidates to select who goes onto the next phase of hiring.

Learn more
In-depth candidate performance analysis
Offer This Test
Sign up for a trial plan.

Premium Questions for C++ Algorithms and SQL 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.

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.

SQL Conditions Views C++ Algorithmic thinking Constraints Create table Database schema Select Create index Performance tuning Alter table Aggregation Subqueries Ordering Bug fixing Left join Queue Indexes Union Group by Update Insert Joins Data structures Linked list Unordered map Delete Sorting Graphs SQL CASE Dynamic programming Unordered set Vector Right join Database normalization Arrays Tree CTE
Recommended Job Roles

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

Back-End Developer
C++ Developer
SQL Developer

Take or Offer the C++ Algorithms and SQL Online Test

How TestDome works

1. Choose or create a test
2. Share your test via URL or email
3. Review overall results and pass/fail grouping
4. Dive deeper into individual results

Excellent support & free concierge service

We offer fast, hands-on support for any question or concern you might have. If you want help with building a custom test or inviting candidates, we’ll handle everything for you.

Contact Support for any questions or to request our free concierge service.

Excellent support

Take or Offer the C++ Algorithms and SQL Online Test

Dashboard Start Trial Sign In Home Tour Tests Questions Pricing For Jobseekers