HACKERRANK Study Guide 2026
Everything you need to pass the HACKERRANK exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 HACKERRANK Exam Format at a Glance
📚 HACKERRANK Topics to Study (75)
✍️ Sample HACKERRANK Questions & Answers
1. What is the result of `10 % 3`?
The modulo operator `%` returns the remainder after division; `10 ÷ 3` has remainder `1`.
2. What is the output of `list(map(lambda x: x**2, [1, 2, 3, 4]))`?
`map` applies the lambda squaring function to each element, producing [1, 4, 9, 16].
3. A HackerRank Python (Basic) certification primarily tests proficiency in which area?
The Basic certification focuses on core Python syntax, data types, and foundational problem-solving skills.
4. Which Python feature helps reduce repetitive code and is commonly tested in HackerRank certification problems?
List comprehensions offer a concise way to build lists and are a hallmark of idiomatic Python that certification problems reward.
5. What is the value of `0.1 + 0.2 == 0.3` in Python?
Floating-point arithmetic is inexact; `0.1 + 0.2` evaluates to `0.30000000000000004`, not exactly `0.3`.
6. What Python error handling construct should you master for robust HackerRank certification solutions?
try/except blocks allow graceful handling of runtime errors, which is tested in problems that require input validation or safe operations.
🎯 Free HACKERRANK Practice Tests
📖 HACKERRANK Guides & Articles
- HackerRank Sample Test: Complete Guide to the HackerRank Python Certification
- HackerRank Python Certification Practice Test PDF (Free Printable 2026)
- HackerRank Python Certification Guide 2026 — Prep & Tips
- HackerRank Python Certification
- HackerRank Python Certification: Master Coding Skills
- HackerRank Practice Test