Exercises on the Standard ML Track | Exercism

Hello World

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

Two Fer

Create a sentence of the form "One for X, one for me."

Leap

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

All Your Base

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

Matching Brackets

Make sure the brackets and braces all match.

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.

Allergies

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

Anagram

Given a word and a list of possible anagrams, select the correct sublist.

Space Age

Given an age in seconds, calculate how old someone is in terms of a given planet's solar years.

Flatten Array

Take a nested list and return a single list with all values except nil/null

Hamming

Calculate the Hamming difference between two DNA strands.

Raindrops

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

Nth Prime

Given a number n, determine what the nth prime is.

Difference Of Squares

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

Atbash Cipher

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

Perfect Numbers

Determine if a number is perfect, abundant, or deficient based on Nicomachus' (60 - 120 CE) classification scheme for natural numbers.

Pangram

Determine if a sentence is a pangram.

Prime Factors

Compute the prime factors of a given natural number.

List Ops

Implement basic list operations

RNA Transcription

Given a DNA strand, return its RNA Complement Transcription.

Collatz Conjecture

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

Sum Of Multiples

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

Phone Number

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

Roman Numerals

Write a function to convert from normal numbers to Roman Numerals.

Diamond

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

text formatting

Pig Latin

Implement a program that translates from English to Pig Latin

text formatting