Add new Perl 5 exercises
One of the easiest ways to add new exercises to the Perl 5 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 Perl 5.
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 Perl 5 track repository on GitHub.
Determine if a sentence is a pangram.
Convert a long phrase to its acronym
Given a number n, determine what the nth prime is.
Determine if a word or phrase is an isogram.
Make sure the brackets and braces all match.
Determine if a number is perfect, abundant, or deficient based on Nicomachus' (60 - 120 CE) classification scheme for natural numbers.
Take a nested list and return a single list with all values except nil/null
Run Length Encoding
Implement run-length encoding and decoding.
Correctly determine change to be given using the least number of coins
A data structure that uses a single, fixed-size buffer as if it were connected end-to-end.
Calculate the number of steps to reach 1 using the Collatz conjecture
Simulate a bank account supporting opening/closing, withdraws, and deposits of money. Watch out for concurrent transactions!
Given a letter, print a diamond starting with 'A' with the supplied letter at the widest point.
Create an implementation of the rotational cipher, also sometimes called the Caesar cipher.
Implement an evaluator for a very simple subset of Forth
Implement a basic reactive system.
Write a function to solve alphametics puzzles.
Compute the result for a game of Hex / Polygon
Pick the best hand(s) from a list of poker hands.
Tally the results of a small football competition.
Take input text and output it transposed.
Create a sentence of the form "One for X, one for me."
Make a chain of dominoes.
Parallel Letter Frequency
Count the frequency of letters in texts using parallel computation.
Translate RNA sequences into proteins.
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.
Given the size, return a square matrix of numbers in spiral order.
Create a program to solve a word search puzzle.
Implement complex numbers.
Diffie-Hellman key exchange.
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.
Given two buckets of different size, demonstrate how to measure an exact number of liters.
Implement various kinds of error handling and resource management
Refactor a Markdown parser
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