--- title: "Code Challenge: Brainfuck Interpreter | CoderPad" description: "Brainfuck is a very simple programming language with only eight instructions. Despite its simplicity, it’s actually Turing-complete! Think you have what it takes to complete a Brainfuck interpreter? Solve the challenge in the blog post sandbox." canonical: "https://coderpad.io/blog/coding-challenges/brainfuck-interpreter-tiny-interview/" last_modified: "2026-04-15 16:21:00" --- [Back to blog](https://coderpad.io/blog/) # Code Challenge: Brainfuck Interpreter December 19, 2022 1 Minute Read [Coding Challenges](https://coderpad.io/blog/coding-challenges/) Brainfuck is a very simple programming language with only eight instructions. Despite its simplicity, it’s actually Turing-complete! This language doesn’t use any variables: it works with a large array of bytes as its memory, initialized with all zeros. The interpreter also has a pointer that indicates the current memory location. The pointer can be moved left and right, and all operations on memory are performed on the currently pointed cell. The program is executed one instruction at a time, from left to right. Please see the instructions written directly in the pad to proceed. ## Want to conduct interviews on this platform? Check out CoderPad : pick any interview question or create your own, then invite your candidate to a shared live-coding session on an IDE like this one. You even get 2 free interviews per month forever using [this registration link](https://app.coderpad.io/register?source=Tiny+Interviews)! ## Subscribe for more CoderPad insights ## Trending Articles Previous slide Next slide [Coding Challenges ## Code Challenge: Hotel Booking Demand This two part challenge aims to test your understanding of how you can interact with data and explore it to unveil important hidden information as well as craft visualizations that spotlight various aspects of the dataset. Read the post](https://coderpad.io/blog/coding-challenges/code-challenge-hotel-booking-demand/) [Coding Challenges ## Code Challenge: Consuming API In Spring In Spring applications, consuming APIs is a common requirement for interacting with external services or fetching data from remote servers. Complete the API consumption methods for the students endpoints in this code challenge. Read the post](https://coderpad.io/blog/coding-challenges/code-challenge-consuming-api-in-spring/) [Coding Challenges ## Code Challenge: Django Models Django is a popular Python framework for building web applications. Test your knowledge of models by improving the Django application in this code challenge. Read the post](https://coderpad.io/blog/coding-challenges/code-challenge-django-models/) [Coding Challenges ## Code Challenge: Responsiveness in HTML This coding challenge tests your knowledge on responsiveness and creating interactive websites. Take a stab at the tasks in this challenge! Read the post](https://coderpad.io/blog/coding-challenges/coding-challenge-responsiveness-in-html/) [Coding Challenges ## Code Challenge: Simple Search For this code challenge, you are provided with a website that has a vulnerability. Can you fix it? Read the post](https://coderpad.io/blog/coding-challenges/coding-challenge-simple-search/) [Coding Challenges ## Code Challenge: Toggle With CSS Test your understanding of HTML & CSS by completing the tasks in this code challenge. Read the post](https://coderpad.io/blog/coding-challenges/tiny-interview-toggle-with-css/) [Coding Challenges ## Code Challenge: Python Longest Subarray In a street with colored houses, you want to take a picture containing the most houses, but without any duplicate colors. Can you solve this problem involving unique values? Read the post](https://coderpad.io/blog/coding-challenges/tiny-interview-python-longest-subarray/) [Coding Challenges ## Code Challenge: React Controlled Input State management is a method of controlling communication between different parts of state and their usage, including React components. Test your knowledge on state management by improving the React app in this code challenge. Read the post](https://coderpad.io/blog/coding-challenges/tiny-interview-react-controlled-input/) [Coding Challenges ## Code Challenge: Django Search Filter Django is a popular Python framework for building web applications. Test your Django knowledge by improving the search filter application in this tiny interview. Read the post](https://coderpad.io/blog/coding-challenges/tiny-interview-django-search-filter/) [Coding Challenges ## Code Challenge: Vue Counter App Vue is a popular JavaScript library for building frontend applications and user interfaces. It builds on HTML, CSS and JavaScript and employs a declarative model for building components. Test your Vue knowledge by improving the counter application in this code challenge. Read the post](https://coderpad.io/blog/coding-challenges/tiny-interview-vue-counter-app/) [Coding Challenges ## Code Challenge: Python Unit Testing Unit tests ideally test a small unit (or rather, amount) of code. For this code challenge, we have created 20 bad functions, write testcases to break them all! Read the post](https://coderpad.io/blog/coding-challenges/tiny-interview-python-unit-testing/) [Coding Challenges ## Code Challenge: Python Move Zeros In this code challenge, the provided function works but is very slow on larger inputs. Can you make it faster? Read the post](https://coderpad.io/blog/coding-challenges/tiny-interview-python-move-zeros/) ## Hire with confidence. See why engineering teams trust CoderPad to evaluate developers with realistic, AI-ready hiring workflows. 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