Add new Elixir exercises
One of the easiest ways to add new exercises to the Elixir track is to translate them from other language tracks on Exercism. This page lists all of the problem specifications in the common pool of exercises which have not yet been implemented in Elixir.
The icon links to the language-independent description of the problem.
The icon links to the canonical test data.
We also link to all the implementations of each exercise in other languages, which you can use for inspiration.
Once you've picked an exercise, follow the instructions in this guide and submit your pull request to the Elixir track repository on GitHub.
Binary Search Tree
Insert and search for numbers in a binary tree.
Implement a doubly linked list
A data structure that uses a single, fixed-size buffer as if it were connected end-to-end.
Generate the lyrics of the song 'I Know an Old Lady Who Swallowed a Fly'
Output the nursery rhyme 'This is the House that Jack Built'.
Implement a basic reactive system.
Write a function to solve alphametics puzzles.
Take input text and output it transposed.
Variable Length Quantity
Implement variable length quantity encoding and decoding.
To try and encourage more sales of different books from a popular 5 book series, a bookshop has decided to offer discounts of multiple-book purchases.
Reparent a graph on a selected node
For want of a horseshoe nail, a kingdom was lost, or so the saying goes. Output the full text of this proverbial rhyme.
Count the rectangles in an ASCII diagram.
Given the size, return a square matrix of numbers in spiral order.
Create a sentence of the form "One for X, one for me."
Create a program to solve a word search puzzle.
Given two buckets of different size, demonstrate how to measure an exact number of liters.
Implement various kinds of error handling and resource management
Parsing a Smart Game Format string.
Implement complex numbers.
Count the scored points on a Go board.
Implement the logic of the hangman game using functional reactive programming.
Refactor a ledger printer.
Use lenses to update nested records (specific to languages with immutable data).
Refactor a tree building algorithm.
Report network IO statistics