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Implement basic list operations
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!
Correctly determine change to be given using the least number of coins
Implement a basic reactive system.
Compute the result for a game of Hex / Polygon
Output the nursery rhyme 'This is the House that Jack Built'.
Tally the results of a small football competition.
Implement an evaluator for a very simple subset of Forth
Parallel Letter Frequency
Count the frequency of letters in texts using parallel computation.
Translate RNA sequences into proteins.
Simple Linked List
Write a simple linked list implementation that uses Elements and a List
Take input text and output it transposed.
Output the lyrics to 'The Twelve Days of Christmas'
Make a chain of dominoes.
Pick the best hand(s) from a list of poker hands.
Create an implementation of the rotational cipher, also sometimes called the Caesar cipher.
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.
Rail Fence Cipher
Implement encoding and decoding for the rail fence cipher.
Creating a zipper for a binary tree.
Reparent a graph on a selected node
Count the rectangles in an ASCII diagram.
Create a program to solve a word search puzzle.
Search a file for lines matching a regular expression pattern. Return the line number and contents of each matching line.
Generate musical scales, given a starting note and a set of intervals.
Calculate the number of steps to reach 1 using the Collatz conjecture
Diffie-Hellman key exchange.
Refactor a Markdown parser
Parsing a Smart Game Format string.
Write a Domain Specific Language similar to the Graphviz dot language
Implement various kinds of error handling and resource management
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.
Create a sentence of the form "One for X, one for me."
Report network IO statistics