Big O Notation Quiz

Build a clearer grasp of Big O concepts in about 10 minutes. Get a free score and clear band from 16 code-based questions across loops, recursion, data structures, and graphs.

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Questions: 1610 minutes

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July 22, 2026

July 22, 2026
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July 22, 2026
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example score

8/16

Big O Notation Knowledge (BONK)

Measures how well you understand and can apply Big O notation and asymptotic complexity concepts across common algorithm scenarios.

Foundations to Build

Developing Knowledge

Strong Knowledge

0 – NaN: Foundations to Build | 7 – NaN: Developing Knowledge | 13 – NaN: Strong Knowledge

A score of 8 indicates developing knowledge, meaning you grasp many core Big O ideas but may benefit from more practice with nested loops, recurrences, and common implementation assumptions.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Interview-focused developers

44%OF USERS

People preparing for coding interviews who want to quickly check their grasp of time and space complexity across common patterns.

Computer science students

36%OF USERS

Students reviewing algorithms and data structures who want practice comparing growth rates and analyzing loops and recursion.

Working engineers refreshing skills

20%OF USERS

Engineers who use algorithms occasionally and want a fast refresher on asymptotic bounds for searches, data structures, and graphs.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

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See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.

Big O Notation Knowledge (BONK)

Average

10.5

Normal range

8.5 — 12.6

min.

max.

Majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.

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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

What does this quiz measure?

It measures understanding of Big O notation and asymptotic reasoning. Items cover growth rates, upper and lower bounds, and complexity in common code patterns.

What topics are included?

Questions address loops, recursion, searching, common data structures, and basic graph algorithms. Several items use short code-style scenarios to compare or derive time complexity.

How long does it take and how many questions are there?

The quiz contains 16 questions. Estimated completion time is about 10 minutes.

How are results reported?

Results include a knowledge score and a clear result band. The score reflects the number of correct responses on the set of items.

Is registration required and is there a cost?

No sign-up is required. The quiz is free to complete.

WHAT THE TEST MEASURES

About This Assessment

Big O Notation Quiz - Symptoms and Signs

Test your understanding of Big O notation with 16 questions covering asymptotic bounds, growth rates, loops, recursion, searching, data structures, and graph algorithms. The quiz combines essential concepts with short code-style scenarios that ask you to compare or derive complexity. You will receive a knowledge score with a clear result band. It is free, quick to complete, and no sign-up is required.

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