Exercises on the PureScript Track | Exercism

Exercism v3 launches on Sept 1st 2021. Learn more! 🚀🚀🚀

Hello World

The classical introductory exercise. Just say "Hello, World!"

Leap

Given a year, report if it is a leap year.

Pangram

Determine if a sentence is a pangram.

Bob

Bob is a lackadaisical teenager. In conversation, his responses are very limited.

Accumulate

Implement the `accumulate` operation, which, given a collection and an operation to perform on each element of the collection, returns a new collection containing the result of applying that operation to each element of the input collection.

pattern matching

Collatz Conjecture

Calculate the number of steps to reach 1 using the Collatz conjecture

RNA Transcription

Given a DNA strand, return its RNA Complement Transcription.

Sum Of Multiples

Given a number, find the sum of all the multiples of particular numbers up to but not including that number.

Raindrops

Convert a number to a string, the content of which depends on the number's factors.

Hamming

Calculate the Hamming difference between two DNA strands.

iterating over two lists at once

Scrabble Score

Given a word, compute the Scrabble score for that word.

Acronym

Convert a long phrase to its acronym

Triangle

Determine if a triangle is equilateral, isosceles, or scalene.

algebraic data types

Word Count

Given a phrase, count the occurrences of each word in that phrase.

Meetup

Calculate the date of meetups.

Atbash Cipher

Create an implementation of the atbash cipher, an ancient encryption system created in the Middle East.

Bracket Push

Allergies

Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.

bitwise operations

All Your Base

Convert a number, represented as a sequence of digits in one base, to any other base.

base conversion

Binary Search

Implement a binary search algorithm.

Difference Of Squares

Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.

Diamond

Given a letter, print a diamond starting with 'A' with the supplied letter at the widest point.

Crypto Square

Implement the classic method for composing secret messages called a square code.

Isogram

Determine if a word or phrase is an isogram.

ETL

We are going to do the `Transform` step of an Extract-Transform-Load.

Largest Series Product

Given a string of digits, calculate the largest product for a contiguous substring of digits of length n.

Pascal's Triangle

Compute Pascal's triangle up to a given number of rows.

Phone Number

Clean up user-entered phone numbers so that they can be sent SMS messages.

pattern matching