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Get fluent in Odin by solving 71 exercises. And then level up with mentoring from our world-class team.
Overview
Syllabus
- Hello World
- Exercism's classic introductory exercise. Just say "Hello, World!".
- Leap
- Determine whether a given year is a leap year.
- Space Age
- Given an age in seconds, calculate how old someone is in terms of a given planet's solar years.
- Two Fer
- Create a sentence of the form "One for X, one for me.".
- All Your Base
- Convert a number, represented as a sequence of digits in one base, to any other base.
- Armstrong Numbers
- Determine if a number is an Armstrong number.
- Bob
- Bob is a lackadaisical teenager. In conversation, his responses are very limited.
- Bottle Song
- Produce the lyrics to the popular children's repetitive song: Ten Green Bottles.
- Clock
- Implement a clock that handles times without dates.
- Collatz Conjecture
- Calculate the number of steps to reach 1 using the Collatz conjecture.
- Custom Set
- Create a custom set type.
- D&D Character
- Randomly generate Dungeons & Dragons characters.
- Darts
- Calculate the points scored in a single toss of a Darts game.
- Difference Of Squares
- Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
- Eliud's Eggs
- Help Eliud count the number of eggs in her chicken coop by counting the number of 1 bits in a binary representation.
- Food Chain
- Generate the lyrics of the song 'I Know an Old Lady Who Swallowed a Fly'.
- Gigasecond
- Given a moment, determine the moment that would be after a gigasecond has passed.
- Grains
- Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.
- Hamming
- Calculate the Hamming distance between two DNA strands.
- High Scores
- Manage a player's High Score list.
- ISBN Verifier
- Check if a given string is a valid ISBN-10 number.
- Isogram
- Determine if a word or phrase is an isogram.
- Line Up
- Help lining up customers at Yaʻqūb's Deli.
- Luhn
- Given a number determine whether or not it is valid per the Luhn formula.
- Nucleotide Count
- Given a DNA string, compute how many times each nucleotide occurs in the string.
- Pangram
- Determine if a sentence is a pangram.
- Pascal's Triangle
- Compute Pascal's triangle up to a given number of rows.
- Perfect Numbers
- Determine if a number is perfect, abundant, or deficient based on Nicomachus' (60 - 120 CE) classification scheme for positive integers.
- Protein Translation
- Translate RNA sequences into proteins.
- Proverb
- For want of a horseshoe nail, a kingdom was lost, or so the saying goes. Output the full text of this proverbial rhyme.
- Pythagorean Triplet
- Given an integer N, find all Pythagorean triplets for which a + b + c = N.
- Queen Attack
- Given the position of two queens on a chess board, indicate whether or not they are positioned so that they can attack each other.
- Raindrops
- Convert a number into its corresponding raindrop sounds - Pling, Plang and Plong.
- Resistor Color
- Convert a resistor band's color to its numeric representation.
- Resistor Color Duo
- Convert color codes, as used on resistors, to a numeric value.
- RNA Transcription
- Given a DNA strand, return its RNA complement.
- Robot Name
- Manage robot factory settings.
- Robot Simulator
- Write a robot simulator.
- Series
- Given a string of digits, output all the contiguous substrings of length `n` in that string.
- Simple Cipher
- Implement the Vigenère cipher, a simple substitution cipher.
- Triangle
- Determine if a triangle is equilateral, isosceles, or scalene.
- Acronym
- Convert a long phrase to its acronym.
- 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.
- Atbash Cipher
- Create an implementation of the Atbash cipher, an ancient encryption system created in the Middle East.
- Bank Account
- Simulate a bank account supporting opening/closing, withdraws, and deposits of money. Watch out for concurrent transactions!
- Binary Search
- Implement a binary search algorithm.
- Binary Search Tree
- Insert and search for numbers in a binary tree.
- Book Store
- 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.
- Change
- Correctly determine change to be given using the least number of coins.
- Circular Buffer
- A data structure that uses a single, fixed-size buffer as if it were connected end-to-end.
- Diamond
- Given a letter, print a diamond starting with 'A' with the supplied letter at the widest point.
- Flatten Array
- Take a nested list and return a single list with all values except nil/null.
- Grade School
- Given students' names along with the grade that they are in, create a roster for the school.
- Knapsack
- Given a knapsack that can only carry a certain weight, determine which items to put in the knapsack in order to maximize their combined value.
- Linked List
- Implement a doubly linked list.
- List Ops
- Implement basic list operations.
- Matching Brackets
- Make sure the brackets and braces all match.
- Rational Numbers
- Implement rational numbers.
- Reverse String
- Reverse a given string.
- Roman Numerals
- Convert modern Arabic numbers into Roman numerals.
- Sieve
- Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.
- Two Bucket
- Given two buckets of different size, demonstrate how to measure an exact number of liters.
- Word Count
- Given a phrase, count the occurrences of each word in that phrase.
- Yacht
- Score a single throw of dice in the game Yacht.
- Bowling
- Score a bowling game.
- Dominoes
- Make a chain of dominoes.
- Forth
- Implement an evaluator for a very simple subset of Forth.
- Intergalactic Transmission
- Add parity bits to a message for transmission
- Zebra Puzzle
- Solve the zebra puzzle.
- Zipper
- Creating a zipper for a binary tree.
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