CoffeeScript
CoffeeScript
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CoffeeScript Track Management

This page provides the Exercism community with the information and tools needed to manage the CoffeeScript track.

Students
1,571
Submissions
9,457
Mentoring Discussions
157

The CoffeeScript track needs attention ⚠️

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Practice Exercises

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Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Synced primary repo: 79e30cddb3cb845f0d3519af4da7ad5aca3ba18a (Updates should be instant)

Next goal: Implement 134 practice exercises. Find out more.
86 active practice exercises
Started
Attempts
Completions
Mentoring requests
Hello World Hello World
946
1,415 (avg. 1.5)
601 (63.5%)
2 (0.2%)
Acronym Acronym
49
147 (avg. 3.0)
13 (26.5%)
0 (0.0%)
Anagram Anagram
160
539 (avg. 3.4)
132 (82.5%)
4 (2.5%)
Armstrong Numbers Armstrong Numbers
12
32 (avg. 2.7)
8 (66.7%)
0 (0.0%)
Bank Account Bank Account
7
29 (avg. 4.1)
4 (57.1%)
0 (0.0%)
Binary Search Binary Search
9
62 (avg. 6.9)
6 (66.7%)
0 (0.0%)
Bottle Song Bottle Song
15
132 (avg. 8.8)
8 (53.3%)
1 (6.7%)
Clock Clock
43
159 (avg. 3.7)
30 (69.8%)
0 (0.0%)
Collatz Conjecture Collatz Conjecture
11
31 (avg. 2.8)
8 (72.7%)
0 (0.0%)
Conway's Game of Life Conway's Game of Life
2
1 (avg. 0.5)
1 (50.0%)
0 (0.0%)
D&D Character D&D Character
6
23 (avg. 3.8)
5 (83.3%)
0 (0.0%)
Darts Darts
11
12 (avg. 1.1)
8 (72.7%)
0 (0.0%)
Difference of Squares Difference of Squares
11
28 (avg. 2.5)
10 (90.9%)
0 (0.0%)
Eliud's Eggs Eliud's Eggs
8
13 (avg. 1.6)
7 (87.5%)
0 (0.0%)
ETL ETL
7
31 (avg. 4.4)
6 (85.7%)
0 (0.0%)
Flatten Array Flatten Array
6
26 (avg. 4.3)
6 (100.0%)
0 (0.0%)
Food Chain Food Chain
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Gigasecond Gigasecond
6
14 (avg. 2.3)
5 (83.3%)
0 (0.0%)
Grains Grains
8
36 (avg. 4.5)
7 (87.5%)
0 (0.0%)
High Scores High Scores
6
20 (avg. 3.3)
5 (83.3%)
0 (0.0%)
ISBN Verifier ISBN Verifier
5
12 (avg. 2.4)
5 (100.0%)
0 (0.0%)
Isogram Isogram
7
21 (avg. 3.0)
6 (85.7%)
0 (0.0%)
Leap Leap
28
51 (avg. 1.8)
25 (89.3%)
0 (0.0%)
Linked List Linked List
37
224 (avg. 6.1)
29 (78.4%)
0 (0.0%)
List Ops List Ops
7
55 (avg. 7.9)
6 (85.7%)
0 (0.0%)
Luhn Luhn
79
421 (avg. 5.3)
70 (88.6%)
0 (0.0%)
Matrix Matrix
7
27 (avg. 3.9)
5 (71.4%)
0 (0.0%)
Matching Brackets Matching Brackets
6
20 (avg. 3.3)
5 (83.3%)
0 (0.0%)
Micro Blog Micro Blog
7
24 (avg. 3.4)
6 (85.7%)
0 (0.0%)
Nucleotide Count Nucleotide Count
42
231 (avg. 5.5)
35 (83.3%)
3 (7.1%)
Palindrome Products Palindrome Products
50
213 (avg. 4.3)
39 (78.0%)
3 (6.0%)
Pangram Pangram
8
58 (avg. 7.3)
6 (75.0%)
0 (0.0%)
Pascal's Triangle Pascal's Triangle
84
404 (avg. 4.8)
70 (83.3%)
0 (0.0%)
Perfect Numbers Perfect Numbers
8
29 (avg. 3.6)
6 (75.0%)
0 (0.0%)
Phone Number Phone Number
15
110 (avg. 7.3)
12 (80.0%)
0 (0.0%)
Prime Factors Prime Factors
6
11 (avg. 1.8)
6 (100.0%)
0 (0.0%)
Protein Translation Protein Translation
8
64 (avg. 8.0)
6 (75.0%)
0 (0.0%)
Proverb Proverb
6
37 (avg. 6.2)
5 (83.3%)
0 (0.0%)
Queen Attack Queen Attack
175
525 (avg. 3.0)
52 (29.7%)
3 (1.7%)
Raindrops Raindrops
11
80 (avg. 7.3)
8 (72.7%)
0 (0.0%)
Resistor Color Resistor Color
7
13 (avg. 1.9)
6 (85.7%)
0 (0.0%)
Resistor Color Duo Resistor Color Duo
7
9 (avg. 1.3)
6 (85.7%)
0 (0.0%)
Resistor Color Trio Resistor Color Trio
2
1 (avg. 0.5)
1 (50.0%)
0 (0.0%)
Robot Simulator Robot Simulator
6
15 (avg. 2.5)
5 (83.3%)
0 (0.0%)
Reverse String Reverse String
11
32 (avg. 2.9)
10 (90.9%)
0 (0.0%)
RNA Transcription RNA Transcription
16
66 (avg. 4.1)
14 (87.5%)
0 (0.0%)
Roman Numerals Roman Numerals
8
32 (avg. 4.0)
6 (75.0%)
0 (0.0%)
Rotational Cipher Rotational Cipher
7
9 (avg. 1.3)
6 (85.7%)
0 (0.0%)
Scrabble Score Scrabble Score
17
181 (avg. 10.6)
15 (88.2%)
1 (5.9%)
Series Series
7
18 (avg. 2.6)
6 (85.7%)
0 (0.0%)
Space Age Space Age
8
32 (avg. 4.0)
6 (75.0%)
0 (0.0%)
Square Root Square Root
6
13 (avg. 2.2)
4 (66.7%)
0 (0.0%)
Strain Strain
7
10 (avg. 1.4)
6 (85.7%)
0 (0.0%)
Sublist Sublist
5
19 (avg. 3.8)
5 (100.0%)
0 (0.0%)
Sum of Multiples Sum of Multiples
7
38 (avg. 5.4)
7 (100.0%)
0 (0.0%)
Triangle Triangle
93
316 (avg. 3.4)
85 (91.4%)
4 (4.3%)
Twelve Days Twelve Days
2
1 (avg. 0.5)
1 (50.0%)
0 (0.0%)
Two Fer Two Fer
30
100 (avg. 3.3)
21 (70.0%)
1 (3.3%)
Yacht Yacht
6
43 (avg. 7.2)
4 (66.7%)
0 (0.0%)
Word Count Word Count
212
494 (avg. 2.3)
197 (92.9%)
15 (7.1%)
Atbash Cipher Atbash Cipher
33
122 (avg. 3.7)
29 (87.9%)
1 (3.0%)
Binary Search Tree Binary Search Tree
60
120 (avg. 2.0)
56 (93.3%)
4 (6.7%)
Bob Bob
382
741 (avg. 1.9)
348 (91.1%)
83 (21.7%)
Custom Set Custom Set
5
61 (avg. 12.2)
4 (80.0%)
0 (0.0%)
Diamond Diamond
2
1 (avg. 0.5)
1 (50.0%)
0 (0.0%)
House House
2
2 (avg. 1.0)
1 (50.0%)
0 (0.0%)
Kindergarten Garden Kindergarten Garden
6
8 (avg. 1.3)
5 (83.3%)
0 (0.0%)
Largest Series Product Largest Series Product
6
14 (avg. 2.3)
5 (83.3%)
0 (0.0%)
Nth Prime Nth Prime
54
133 (avg. 2.5)
47 (87.0%)
4 (7.4%)
Pig Latin Pig Latin
6
26 (avg. 4.3)
4 (66.7%)
0 (0.0%)
Run-Length Encoding Run-Length Encoding
6
13 (avg. 2.2)
4 (66.7%)
0 (0.0%)
Spiral Matrix Spiral Matrix
6
28 (avg. 4.7)
4 (66.7%)
0 (0.0%)
Wordy Wordy
39
173 (avg. 4.4)
34 (87.2%)
0 (0.0%)
Allergies Allergies
6
14 (avg. 2.3)
5 (83.3%)
0 (0.0%)
Circular Buffer Circular Buffer
8
20 (avg. 2.5)
5 (62.5%)
0 (0.0%)
Sieve Sieve
6
38 (avg. 6.3)
5 (83.3%)
0 (0.0%)
Secret Handshake Secret Handshake
6
13 (avg. 2.2)
5 (83.3%)
0 (0.0%)
Hamming Hamming
7
23 (avg. 3.3)
6 (85.7%)
0 (0.0%)
Grade School Grade School
6
48 (avg. 8.0)
5 (83.3%)
0 (0.0%)
Relative Distance Relative Distance
2
1 (avg. 0.5)
1 (50.0%)
0 (0.0%)
Minesweeper Minesweeper
6
5 (avg. 0.8)
4 (66.7%)
0 (0.0%)
Simple Linked List Simple Linked List
6
9 (avg. 1.5)
4 (66.7%)
0 (0.0%)
Two Bucket Two Bucket
6
13 (avg. 2.2)
3 (50.0%)
0 (0.0%)
All Your Base All Your Base
5
18 (avg. 3.6)
4 (80.0%)
0 (0.0%)
Meetup Meetup
5
13 (avg. 2.6)
3 (60.0%)
0 (0.0%)
Knapsack Knapsack
5
3 (avg. 0.6)
3 (60.0%)
0 (0.0%)
5 deprecated practice exercises
Started
Attempts
Completions
Mentoring requests
Accumulate Accumulate
151
225 (avg. 1.5)
143 (94.7%)
9 (6.0%)
Beer Song Beer Song
43
81 (avg. 1.9)
31 (72.1%)
2 (4.7%)
Binary Binary
148
376 (avg. 2.5)
138 (93.2%)
10 (6.8%)
Hexadecimal Hexadecimal
96
177 (avg. 1.8)
91 (94.8%)
6 (6.3%)
Trinary Trinary
102
128 (avg. 1.3)
99 (97.1%)
1 (1.0%)
48 unimplemented practice exercises
Affine Cipher Affine Cipher
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Alphametics Alphametics
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Baffling Birthdays Baffling Birthdays
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Book Store Book Store
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Bowling Bowling
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Change Change
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Complex Numbers Complex Numbers
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Connect Connect
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Crypto Square Crypto Square
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Dominoes Dominoes
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DOT DSL DOT DSL
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Error Handling Error Handling
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Forth Forth
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Go Counting Go Counting
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Grep Grep
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Hangman Hangman
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Intergalactic Transmission Intergalactic Transmission
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Killer Sudoku Helper Killer Sudoku Helper
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Ledger Ledger
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Lens Person Lens Person
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Markdown Markdown
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OCR Numbers OCR Numbers
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PaaS I/O PaaS I/O
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Parallel Letter Frequency Parallel Letter Frequency
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Poker Poker
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POV POV
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Pythagorean Triplet Pythagorean Triplet
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Rail Fence Cipher Rail Fence Cipher
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Rational Numbers Rational Numbers
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React React
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Rectangles Rectangles
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REST API REST API
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Robot Name Robot Name
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Saddle Points Saddle Points
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Satellite Satellite
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Say Say
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SGF Parsing SGF Parsing
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Simple Cipher Simple Cipher
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Split-Second Stopwatch Split-Second Stopwatch
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State of Tic-Tac-Toe State of Tic-Tac-Toe
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Swift Scheduling Swift Scheduling
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Tournament Tournament
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Transpose Transpose
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Tree Building Tree Building
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Variable Length Quantity Variable Length Quantity
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Word Search Word Search
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Zebra Puzzle Zebra Puzzle
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Zipper Zipper
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Programming Tags

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Help manage the tags used to group, filter and recommend solutions, approaches and articles.

0 tags

Test Runner

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Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Current version: 5c45183f9fa039f8893df1eba047cfb8118b8e1a (Takes up to 10 mins to deploy)

Total Test Runner Runs
8,650
Test Run Pass Rate
32.6% (2818)
Test Run Fail Rate
50.8% (4398)
Test Run Error Rate
16.6% (1434)

Representer

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Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Next goal: Build a Representer. Find out more.

Analyzer

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Build an Analyzer for CoffeeScript: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.