Add new Ruby exercises
One of the easiest ways to add new exercises to the Ruby 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 Ruby.
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 Ruby track repository on GitHub.
Write a function to determine if a list is a sublist of another list.
Simulate a bank account supporting opening/closing, withdraws, and deposits of money. Watch out for concurrent transactions!
Create a sentence of the form "One for X, one for me."
Implement an evaluator for a very simple subset of Forth
Implement a basic reactive system.
Parallel Letter Frequency
Count the frequency of letters in texts using parallel computation.
Variable Length Quantity
Implement variable length quantity encoding and decoding.
Creating a zipper for a binary tree.
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.
Diffie-Hellman key exchange.
Given the size, return a square matrix of numbers in spiral order.
Create a program to solve a word search puzzle.
Refactor a Markdown parser
Reparent a graph on a selected node
Count the rectangles in an ASCII diagram.
Search a file for lines matching a regular expression pattern. Return the line number and contents of each matching line.
Implement various kinds of error handling and resource management
Parsing a Smart Game Format string.
Write a Domain Specific Language similar to the Graphviz dot language
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
Check if a given string is a valid ISBN-10 number.