Exercises on the Julia Track | Exercism

Hello World

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

Leap

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

control flow conditionals

Nucleotide Count

Given a DNA string, compute how many times each nucleotide occurs in the string.

control flow loops

Hamming

Calculate the Hamming difference between two DNA strands.

RNA Transcription

Given a DNA strand, return its RNA Complement Transcription.

exception handling

pattern matching

Bob

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

control flow if else statements

Run Length Encoding

Implement run-length encoding and decoding.

text formatting

Pangram

Determine if a sentence is a pangram.

Anagram

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

control flow loops

Rotational Cipher

Create an implementation of the rotational cipher, also sometimes called the Caesar cipher.

metaprogramming

string literals

Atbash Cipher

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

control flow conditionals

control flow loops

Difference Of Squares

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

Pascal's Triangle

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

control flow conditionals

Raindrops

Convert a number to a string, the contents of which depend on the number's factors.

control flow loops

Scrabble Score

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

control flow conditionals

control flow loops

Word Count

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

control flow loops

Luhn

Given a number determine whether or not it is valid per the Luhn formula.

control flow conditionals

Roman Numerals

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

control flow loops

Isogram

Determine if a word or phrase is an isogram.

control flow conditionals

control flow loops

ETL

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

Collatz Conjecture

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

control flow exceptions

control flow if else statements

Sieve

Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.

control flow conditionals

control flow loops

Trinary

Convert a trinary number, represented as a string (e.g. '102012'), to its decimal equivalent using first principles.

Secret Handshake

Given a decimal number, convert it to the appropriate sequence of events for a secret handshake.

Phone Number

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

pattern matching

regular expressions

Triangle

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

functional abstraction

Transpose

Take input text and output it transposed.

control flow conditionals

control flow loops

Robot Name

Manage robot factory settings.

Gigasecond

Calculate the moment when someone has lived for 10^9 seconds.

Robot Simulator

Write a robot simulator.

Complex Numbers

Implement complex numbers.

function extension

multiple dispatch

Custom Set

Create a custom set type.

function extension

multiple dispatch

parametric types

Grains

Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.

Spiral Matrix

Given the size, return a square matrix of numbers in spiral order.

ISBN Verifier

Check if a given string is a valid ISBN-10 number.

control flow conditionals

metaprogramming

Armstrong Numbers

Determine if a number is an Armstrong number