HackerRank Practice Test (Coding Assessment)

The HackerRank Practice Test (Coding Assessment) is a free intermediate-level, 20-minute skill test from Science of Apps. Practice for online coding assessments in HackerRank and Codility formats — arrays and strings, hashing and two pointers, recursion, sorting and searching, and complexity and problem-solving strategy — written to standard algorithms references and the HackerRank candidate guidance for 2026 hiring. Score 70% or more on its 20 questions to earn a verifiable Coding Assessment Readiness certificate (SOA-HACK). Every question is based on published standards and research — including Algorithms for competitive programming (cp-algorithms.com), HackerRank for Developers: coding tests and environment (HackerRank), The Python Tutorial (Python Software Foundation) — and each answer is explained with its source.

Science of Apps offers a free HackerRank Practice Test, updated for 2026 and 2027. It measures arrays and strings, hashing, and two pointers and gives instant results with a shareable certificate.

Read the four skill areas on this page, then take the 20-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a Coding Assessment Readiness certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: Algorithms for competitive programming (cp-algorithms.com); HackerRank for Developers: coding tests and environment (HackerRank); The Python Tutorial (Python Software Foundation). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Four skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Arrays and Strings (Array basics, String manipulation and Edge cases); Hashing and Two Pointers (Hash maps and sets, Two pointers and Counting); Recursion, Sorting and Searching (Recursion, Sorting and Binary search); Complexity and Problem-Solving Strategy (Big-O, Strategy and Testing). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

Software engineering candidate, New graduate developer, Bootcamp graduate, Career changer into tech and Intern applicant. It suits anyone who wants a quick, verifiable way to show HackerRank knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

An online coding test, often timed, where you solve programming problems in a browser editor while hidden test cases check correctness and efficiency. Many companies use it for screening.

Practise common patterns (hash maps, two pointers, sliding window, sorting, recursion), know Big-O complexity, test edge cases such as empty inputs, and manage your time across questions.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

20 questions — 5 from each of 4 skill areas — with a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

We rate it Intermediate: assumes hands-on experience in the role. It has 20 scenario questions — 5 from each of 4 skill areas — and a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.