Class Central is learner-supported. When you buy through links on our site, we may earn an affiliate commission.

Exercism

CoffeeScript

via Exercism

Go to class Write review
Pragmatic Institute Ad

AI Product Expert Certification - Master Generative AI Skills

Learn More → Boot.dev Ad

Learn Backend Development Part-Time, Online

Learn More →

Overview

Coursera Flash Sale
40% Off Coursera Plus for 3 Months!
Grab it
CoffeeScript is a language which transpiles into JavaScript, used for making dynamic websites (both in the web browser, and on the server). The transpiler is used to transform CoffeeScript code into JavaScript before running, to keep compability and the same performance of JavaScript while providing many new features!

Syllabus

  • Hello World
    • Exercism's classic introductory exercise. Just say "Hello, World!".
  • Acronym
    • Convert a long phrase to its acronym.
  • Anagram
    • Given a word and a list of possible anagrams, select the correct sublist.
  • Armstrong Numbers
    • Determine if a number is an Armstrong number.
  • 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.
  • 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.
  • Conway's Game of Life
    • Implement Conway's Game of Life.
  • 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.
  • ETL
    • Change the data format for scoring a game to more easily add other languages.
  • Flatten Array
    • Take a nested list and return a single list with all values except nil/null.
  • 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.
  • 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.
  • Leap
    • Determine whether a given year is a leap year.
  • Line Up
    • Help lining up customers at YaÊ»qÅ«b's Deli.
  • Linked List
    • Implement a doubly linked list.
  • List Ops
    • Implement basic list operations.
  • Luhn
    • Given a number determine whether or not it is valid per the Luhn formula.
  • Matrix
    • Given a string representing a matrix of numbers, return the rows and columns of that matrix.
  • Matching Brackets
    • Make sure the brackets and braces all match.
  • Micro Blog
    • Given an input string, truncate it to 5 characters.
  • Nucleotide Count
    • Given a DNA string, compute how many times each nucleotide occurs in the string.
  • Palindrome Products
    • Detect palindrome products in a given range.
  • 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.
  • Phone Number
    • Clean up user-entered phone numbers so that they can be sent SMS messages.
  • Prime Factors
    • Compute the prime factors of a given natural number.
  • 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.
  • 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.
  • Resistor Color Trio
    • Convert color codes, as used on resistors, to a human-readable label.
  • Robot Simulator
    • Write a robot simulator.
  • Reverse String
    • Reverse a given string.
  • RNA Transcription
    • Given a DNA strand, return its RNA complement.
  • Roman Numerals
    • Convert modern Arabic numbers into Roman numerals.
  • Rotational Cipher
    • Create an implementation of the rotational cipher, also sometimes called the Caesar cipher.
  • Saddle Points
    • Detect saddle points in a matrix.
  • Scrabble Score
    • Given a word, compute the Scrabble score for that word.
  • State of Tic-Tac-Toe
    • Determine the game state of a match of Tic-Tac-Toe.
  • Series
    • Given a string of digits, output all the contiguous substrings of length `n` in that string.
  • Space Age
    • Given an age in seconds, calculate how old someone is in terms of a given planet's solar years.
  • Square Root
    • Given a natural radicand, return its square root.
  • Strain
    • Implement the `keep` and `discard` operation on collections.
  • Sublist
    • Write a function to determine if a list is a sublist of another list.
  • Sum of Multiples
    • Given a number, find the sum of all the multiples of particular numbers up to but not including that number.
  • Triangle
    • Determine if a triangle is equilateral, isosceles, or scalene.
  • Twelve Days
    • Output the lyrics to 'The Twelve Days of Christmas'.
  • Two Fer
    • Create a sentence of the form "One for X, one for me.".
  • Yacht
    • Score a single throw of dice in the game Yacht.
  • Word Count
    • Given a phrase, count the occurrences of each word in that phrase.
  • Atbash Cipher
    • Create an implementation of the Atbash cipher, an ancient encryption system created in the Middle East.
  • Binary Search Tree
    • Insert and search for numbers in a binary tree.
  • Bob
    • Bob is a lackadaisical teenager. In conversation, his responses are very limited.
  • Custom Set
    • Create a custom set type.
  • Diamond
    • Given a letter, print a diamond starting with 'A' with the supplied letter at the widest point.
  • House
    • Output the nursery rhyme 'This is the House that Jack Built'.
  • Kindergarten Garden
    • Given a diagram, determine which plants each child in the kindergarten class is responsible for.
  • Largest Series Product
    • Given a string of digits, calculate the largest product for a contiguous substring of digits of length n.
  • Nth Prime
    • Given a number n, determine what the nth prime is.
  • Pig Latin
    • Implement a program that translates from English to Pig Latin.
  • Prism
    • Calculate the path of a laser through refractive prisms.
  • Run-Length Encoding
    • Implement run-length encoding and decoding.
  • Say
    • Given a number from 0 to 999,999,999,999, spell out that number in English.
  • Spiral Matrix
    • Given the size, return a square matrix of numbers in spiral order.
  • Wordy
    • Parse and evaluate simple math word problems returning the answer as an integer.
  • Allergies
    • Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.
  • Circular Buffer
    • A data structure that uses a single, fixed-size buffer as if it were connected end-to-end.
  • Sieve
    • Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.
  • Secret Handshake
    • Given a decimal number, convert it to the appropriate sequence of events for a secret handshake.
  • Hamming
    • Calculate the Hamming distance between two DNA strands.
  • Camicia
    • Simulate the card game and determine whether the match ends or enters an infinite loop.
  • Grade School
    • Given students' names along with the grade that they are in, create a roster for the school.
  • Relative Distance
    • Given a family tree, calculate the degree of separation.
  • Change
    • Correctly determine change to be given using the least number of coins.
  • Flower Field
    • Mark all the flowers in a garden.
  • Parallel Letter Frequency
    • Count the frequency of letters in texts using parallel computation.
  • Simple Linked List
    • Write a simple linked list implementation that uses Elements and a List.
  • Two Bucket
    • Given two buckets of different size, demonstrate how to measure an exact number of liters.
  • All Your Base
    • Convert a number, represented as a sequence of digits in one base, to any other base.
  • Meetup
    • Calculate the date of meetups.
  • 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.
  • Satellite
    • Rebuild binary trees from pre-order and in-order traversals.
  • Split-Second Stopwatch
    • Keep track of time through a digital stopwatch.

Reviews

Start your review of CoffeeScript

Go to class

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free
Someone learning on their laptop while sitting on the floor.