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Ruby Track Management

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

Students
62,786
Submissions
2,310,962
Mentoring Discussions
36,870

The Ruby track is healthy ✅

Building

Ruby syllabus

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Help create the track syllabus: is a set of concepts and learning exercises put together to teach foundational elements of the programming language.

Next goal: Create a complete syllabus with at least 30 concepts. Find out more.
21 concepts being taught
Ba
Basics
17,077 learnt
In
Instance Variables
12,129 learnt
Ni
Nil
12,129 learnt
Bo
Booleans
10,372 learnt
St
Strings
11,284 learnt
Co
Conditionals
8,245 learnt
Fl
Floating Point Numbers
8,245 learnt
Nu
Numbers
8,245 learnt
Lo
Loops
6,303 learnt
Mo
Modules
6,303 learnt
Sy
Symbols
3,810 learnt
Ra
Ranges
3,258 learnt
Ca
Case
2,591 learnt
Ar
Arrays
5,335 learnt
En
Enumeration
5,335 learnt
Ad
Advanced Enumeration
4,536 learnt
Os
Ostruct
3,901 learnt
Mu
Multiple Assignment and Decomposition
2,398 learnt
Na
Namespaces
265 learnt
Te
Ternary operator
3,821 learnt
Ra
Raising Exceptions
5,336 learnt
16 active learning exercises
Started
Attempts
Completions
Mentoring requests
Lasagna Lasagna
21,878
118,108 (avg. 5.4)
17,077 (78.1%)
237 (1.1%)
Amusement Park Amusement Park
13,200
60,496 (avg. 4.6)
12,129 (91.9%)
126 (1.0%)
Amusement Park Improvements Amusement Park Improvements
10,863
65,835 (avg. 6.1)
10,372 (95.5%)
91 (0.8%)
Log line Parser Log line Parser
13,352
156,709 (avg. 11.7)
11,284 (84.5%)
323 (2.4%)
Assembly Line Assembly Line
8,857
66,997 (avg. 7.6)
8,245 (93.1%)
118 (1.3%)
Savings Account Savings Account
7,161
93,833 (avg. 13.1)
6,303 (88.0%)
90 (1.3%)
Port Of Palermo Port Of Palermo
4,042
27,979 (avg. 6.9)
3,810 (94.3%)
37 (0.9%)
Chess Game Chess Game
3,443
44,923 (avg. 13.0)
3,258 (94.6%)
38 (1.1%)
BlackJack BlackJack
2,825
31,690 (avg. 11.2)
2,591 (91.7%)
44 (1.6%)
Bird Count Bird Count
5,545
39,051 (avg. 7.0)
5,335 (96.2%)
46 (0.8%)
Boutique Inventory Boutique Inventory
4,850
85,451 (avg. 17.6)
4,536 (93.5%)
66 (1.4%)
Boutique Inventory Improvements Boutique Inventory Improvements
4,203
38,551 (avg. 9.2)
3,901 (92.8%)
43 (1.0%)
Locomotive Engineer Locomotive Engineer
2,741
32,674 (avg. 11.9)
2,398 (87.5%)
31 (1.1%)
Last Will Last Will
306
1,493 (avg. 4.9)
265 (86.6%)
3 (1.0%)
Moviegoer Moviegoer
3,910
26,732 (avg. 6.8)
3,821 (97.7%)
30 (0.8%)
Simple Calculator Simple Calculator
6,980
118,142 (avg. 16.9)
5,336 (76.4%)
166 (2.4%)

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: f281185833348cfb5005ef80ba8ba434fa216eba (Updates should be instant)

Next goal: Implement 139 practice exercises. Find out more.
105 active practice exercises
Started
Attempts
Completions
Mentoring requests
Hello World Hello World
46,852
77,974 (avg. 1.7)
39,844 (85.0%)
112 (0.2%)
Two Fer Two Fer
15,048
69,501 (avg. 4.6)
12,527 (83.2%)
3,861 (25.7%)
Resistor Color Duo Resistor Color Duo
6,859
33,701 (avg. 4.9)
5,662 (82.5%)
1,616 (23.6%)
Acronym Acronym
9,323
48,440 (avg. 5.2)
7,862 (84.3%)
2,207 (23.7%)
High Scores High Scores
6,042
26,207 (avg. 4.3)
5,177 (85.7%)
1,390 (23.0%)
Reverse String Reverse String
2,383
9,198 (avg. 3.9)
1,836 (77.0%)
43 (1.8%)
D&D Character D&D Character
1,666
14,774 (avg. 8.9)
1,077 (64.6%)
48 (2.9%)
Matrix Matrix
5,434
34,581 (avg. 6.4)
4,390 (80.8%)
1,172 (21.6%)
Series Series
5,191
30,420 (avg. 5.9)
4,435 (85.4%)
864 (16.6%)
Word Count Word Count
6,992
43,081 (avg. 6.2)
5,772 (82.6%)
2,017 (28.8%)
Eliud's Eggs Eliud's Eggs
1,118
4,550 (avg. 4.1)
867 (77.5%)
21 (1.9%)
Hamming Hamming
13,002
34,465 (avg. 2.7)
12,208 (93.9%)
3,358 (25.8%)
Raindrops Raindrops
9,333
30,614 (avg. 3.3)
8,779 (94.1%)
1,433 (15.4%)
Isogram Isogram
4,950
33,754 (avg. 6.8)
4,342 (87.7%)
650 (13.1%)
Scrabble Score Scrabble Score
3,580
20,650 (avg. 5.8)
3,126 (87.3%)
547 (15.3%)
Luhn Luhn
3,598
41,885 (avg. 11.6)
2,732 (75.9%)
402 (11.2%)
Clock Clock
3,285
32,805 (avg. 10.0)
2,423 (73.8%)
390 (11.9%)
Twelve Days Twelve Days
2,726
16,974 (avg. 6.2)
1,966 (72.1%)
252 (9.2%)
Tournament Tournament
4,187
63,780 (avg. 15.2)
2,037 (48.7%)
285 (6.8%)
Gigasecond Gigasecond
11,082
16,641 (avg. 1.5)
9,926 (89.6%)
1,168 (10.5%)
Resistor Color Resistor Color
2,764
7,464 (avg. 2.7)
2,436 (88.1%)
115 (4.2%)
RNA Transcription RNA Transcription
10,023
26,237 (avg. 2.6)
9,313 (92.9%)
1,640 (16.4%)
Leap Leap
6,126
15,162 (avg. 2.5)
5,408 (88.3%)
706 (11.5%)
Pangram Pangram
5,845
18,631 (avg. 3.2)
5,373 (91.9%)
638 (10.9%)
Space Age Space Age
3,124
12,773 (avg. 4.1)
2,683 (85.9%)
247 (7.9%)
Triangle Triangle
2,349
15,219 (avg. 6.5)
2,018 (85.9%)
135 (5.7%)
Difference of Squares Difference of Squares
6,582
14,122 (avg. 2.1)
6,256 (95.0%)
942 (14.3%)
Anagram Anagram
3,019
13,815 (avg. 4.6)
2,673 (88.5%)
718 (23.8%)
Spiral Matrix Spiral Matrix
574
5,774 (avg. 10.1)
349 (60.8%)
13 (2.3%)
Sum of Multiples Sum of Multiples
2,873
12,897 (avg. 4.5)
2,418 (84.2%)
148 (5.2%)
Transpose Transpose
1,451
23,393 (avg. 16.1)
836 (57.6%)
38 (2.6%)
Armstrong Numbers Armstrong Numbers
1,584
6,184 (avg. 3.9)
1,356 (85.6%)
28 (1.8%)
Flatten Array Flatten Array
2,911
7,284 (avg. 2.5)
2,345 (80.6%)
113 (3.9%)
Phone Number Phone Number
2,750
19,657 (avg. 7.1)
2,261 (82.2%)
174 (6.3%)
Grains Grains
3,945
9,700 (avg. 2.5)
3,609 (91.5%)
629 (15.9%)
Resistor Color Trio Resistor Color Trio
1,019
8,792 (avg. 8.6)
854 (83.8%)
27 (2.6%)
Saddle Points Saddle Points
1,161
6,966 (avg. 6.0)
913 (78.6%)
34 (2.9%)
ETL ETL
2,179
5,248 (avg. 2.4)
1,922 (88.2%)
126 (5.8%)
Nucleotide Count Nucleotide Count
1,710
9,182 (avg. 5.4)
1,481 (86.6%)
277 (16.2%)
Pythagorean Triplet Pythagorean Triplet
1,002
6,804 (avg. 6.8)
689 (68.8%)
24 (2.4%)
Collatz Conjecture Collatz Conjecture
1,319
5,972 (avg. 4.5)
1,116 (84.6%)
39 (3.0%)
Sieve Sieve
3,775
9,547 (avg. 2.5)
3,443 (91.2%)
287 (7.6%)
Proverb Proverb
1,171
7,100 (avg. 6.1)
993 (84.8%)
99 (8.5%)
Palindrome Products Palindrome Products
1,157
7,902 (avg. 6.8)
721 (62.3%)
34 (2.9%)
Parallel Letter Frequency Parallel Letter Frequency
367
3,784 (avg. 10.3)
195 (53.1%)
10 (2.7%)
Bob Bob
5,300
21,513 (avg. 4.1)
4,770 (90.0%)
3,176 (59.9%)
Nth Prime Nth Prime
3,179
9,098 (avg. 2.9)
2,845 (89.5%)
247 (7.8%)
Perfect Numbers Perfect Numbers
723
2,864 (avg. 4.0)
595 (82.3%)
13 (1.8%)
Alphametics Alphametics
1,079
5,530 (avg. 5.1)
414 (38.4%)
32 (3.0%)
Binary Search Binary Search
871
4,368 (avg. 5.0)
662 (76.0%)
29 (3.3%)
Two Bucket Two Bucket
1,175
6,643 (avg. 5.7)
413 (35.1%)
28 (2.4%)
Matching Brackets Matching Brackets
944
4,187 (avg. 4.4)
680 (72.0%)
27 (2.9%)
All Your Base All Your Base
763
6,075 (avg. 8.0)
509 (66.7%)
13 (1.7%)
Allergies Allergies
751
3,860 (avg. 5.1)
572 (76.2%)
21 (2.8%)
Rail Fence Cipher Rail Fence Cipher
696
3,647 (avg. 5.2)
399 (57.3%)
11 (1.6%)
Run-Length Encoding Run-Length Encoding
1,770
7,071 (avg. 4.0)
1,452 (82.0%)
89 (5.0%)
Flower Field Flower Field
100
766 (avg. 7.7)
70 (70.0%)
4 (4.0%)
Robot Simulator Robot Simulator
791
5,418 (avg. 6.8)
570 (72.1%)
31 (3.9%)
Bottle Song Bottle Song
211
2,320 (avg. 11.0)
161 (76.3%)
8 (3.8%)
Protein Translation Protein Translation
863
7,929 (avg. 9.2)
690 (80.0%)
27 (3.1%)
Wordy Wordy
912
8,287 (avg. 9.1)
633 (69.4%)
33 (3.6%)
Secret Handshake Secret Handshake
679
3,147 (avg. 4.6)
519 (76.4%)
24 (3.5%)
Atbash Cipher Atbash Cipher
878
6,573 (avg. 7.5)
725 (82.6%)
26 (3.0%)
Crypto Square Crypto Square
1,105
5,753 (avg. 5.2)
825 (74.7%)
28 (2.5%)
List Ops List Ops
798
6,451 (avg. 8.1)
525 (65.8%)
11 (1.4%)
Robot Name Robot Name
2,905
4,986 (avg. 1.7)
2,511 (86.4%)
492 (16.9%)
Simple Cipher Simple Cipher
902
6,895 (avg. 7.6)
581 (64.4%)
27 (3.0%)
Dominoes Dominoes
407
2,520 (avg. 6.2)
210 (51.6%)
9 (2.2%)
Pig Latin Pig Latin
677
5,048 (avg. 7.5)
464 (68.5%)
24 (3.5%)
Simple Linked List Simple Linked List
914
8,452 (avg. 9.2)
601 (65.8%)
35 (3.8%)
Binary Search Tree Binary Search Tree
1,340
5,594 (avg. 4.2)
977 (72.9%)
98 (7.3%)
Change Change
597
4,767 (avg. 8.0)
293 (49.1%)
17 (2.8%)
Circular Buffer Circular Buffer
651
3,999 (avg. 6.1)
477 (73.3%)
23 (3.5%)
Grade School Grade School
2,005
5,062 (avg. 2.5)
1,651 (82.3%)
218 (10.9%)
Roman Numerals Roman Numerals
3,951
9,088 (avg. 2.3)
3,516 (89.0%)
322 (8.1%)
Rotational Cipher Rotational Cipher
754
5,630 (avg. 7.5)
596 (79.0%)
20 (2.7%)
Affine Cipher Affine Cipher
482
3,674 (avg. 7.6)
311 (64.5%)
9 (1.9%)
Kindergarten Garden Kindergarten Garden
600
3,633 (avg. 6.1)
439 (73.2%)
18 (3.0%)
Largest Series Product Largest Series Product
583
3,301 (avg. 5.7)
468 (80.3%)
13 (2.2%)
Prime Factors Prime Factors
1,391
3,693 (avg. 2.7)
1,218 (87.6%)
60 (4.3%)
Custom Set Custom Set
441
2,062 (avg. 4.7)
318 (72.1%)
10 (2.3%)
House House
680
2,893 (avg. 4.3)
514 (75.6%)
32 (4.7%)
Linked List Linked List
574
1,440 (avg. 2.5)
393 (68.5%)
23 (4.0%)
Poker Poker
442
2,737 (avg. 6.2)
202 (45.7%)
18 (4.1%)
ISBN Verifier ISBN Verifier
966
9,240 (avg. 9.6)
736 (76.2%)
34 (3.5%)
Complex Numbers Complex Numbers
441
2,602 (avg. 5.9)
279 (63.3%)
11 (2.5%)
Meetup Meetup
2,392
10,283 (avg. 4.3)
897 (37.5%)
77 (3.2%)
Diamond Diamond
967
9,659 (avg. 10.0)
631 (65.3%)
32 (3.3%)
Bowling Bowling
1,543
18,581 (avg. 12.0)
687 (44.5%)
46 (3.0%)
OCR Numbers OCR Numbers
454
2,189 (avg. 4.8)
320 (70.5%)
8 (1.8%)
Say Say
662
3,007 (avg. 4.5)
456 (68.9%)
16 (2.4%)
Zipper Zipper
333
1,155 (avg. 3.5)
161 (48.3%)
2 (0.6%)
Grep Grep
529
4,103 (avg. 7.8)
268 (50.7%)
9 (1.7%)
Food Chain Food Chain
1,063
3,342 (avg. 3.1)
889 (83.6%)
55 (5.2%)
Pascal's Triangle Pascal's Triangle
425
1,359 (avg. 3.2)
316 (74.4%)
12 (2.8%)
Queen Attack Queen Attack
699
2,246 (avg. 3.2)
538 (77.0%)
24 (3.4%)
Yacht Yacht
236
2,411 (avg. 10.2)
143 (60.6%)
10 (4.2%)
Book Store Book Store
702
4,959 (avg. 7.1)
255 (36.3%)
13 (1.9%)
Connect Connect
403
1,903 (avg. 4.7)
190 (47.1%)
7 (1.7%)
Microwave Microwave
2,370
18,001 (avg. 7.6)
1,164 (49.1%)
76 (3.2%)
Darts Darts
1,147
4,080 (avg. 3.6)
876 (76.4%)
35 (3.1%)
Bank Account Bank Account
362
2,814 (avg. 7.8)
230 (63.5%)
12 (3.3%)
Gilded Rose Gilded Rose
240
3,140 (avg. 13.1)
100 (41.7%)
9 (3.8%)
Knapsack Knapsack
203
1,651 (avg. 8.1)
95 (46.8%)
5 (2.5%)
Zebra Puzzle Zebra Puzzle
199
1,109 (avg. 5.6)
76 (38.2%)
1 (0.5%)
10 deprecated practice exercises
Started
Attempts
Completions
Mentoring requests
Accumulate Accumulate
1,813
3,341 (avg. 1.8)
1,572 (86.7%)
172 (9.5%)
Beer Song Beer Song
1,606
9,109 (avg. 5.7)
1,276 (79.5%)
176 (11.0%)
Binary Binary
1,354
1,998 (avg. 1.5)
1,258 (92.9%)
128 (9.5%)
Hexadecimal Hexadecimal
423
580 (avg. 1.4)
386 (91.3%)
25 (5.9%)
Minesweeper Minesweeper
582
3,373 (avg. 5.8)
382 (65.6%)
8 (1.4%)
Octal Octal
14
23 (avg. 1.6)
11 (78.6%)
0 (0.0%)
Point Mutations Point Mutations
57
143 (avg. 2.5)
55 (96.5%)
44 (77.2%)
Scale Generator Scale Generator
508
1,949 (avg. 3.8)
268 (52.8%)
10 (2.0%)
Strain Strain
1,381
2,311 (avg. 1.7)
1,176 (85.2%)
97 (7.0%)
Trinary Trinary
785
1,060 (avg. 1.4)
746 (95.0%)
49 (6.2%)
34 unimplemented practice exercises
Baffling Birthdays Baffling Birthdays
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Camicia Camicia
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Conway's Game of Life Conway's Game of Life
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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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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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Line Up Line Up
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Markdown Markdown
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Micro Blog Micro Blog
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PaaS I/O PaaS I/O
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Piecing It Together Piecing It Together
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POV POV
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Prism Prism
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Rational Numbers Rational Numbers
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React React
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Rectangles Rectangles
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Relative Distance Relative Distance
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REST API REST API
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Satellite Satellite
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Save the Cow Save the Cow
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SGF Parsing SGF Parsing
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Split-Second Stopwatch Split-Second Stopwatch
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Square Root Square Root
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State of Tic-Tac-Toe State of Tic-Tac-Toe
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Sublist Sublist
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Swift Scheduling Swift Scheduling
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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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Test Runner

Learn More

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

Current version: ddc5f48fe1eb8f520a8c947ae7d9c568e77f82df (Takes up to 10 mins to deploy)

Next goal: Get Test Runners to Version 3. Ruby is currently utilising a Version 2 Test Runner. Find out more.
Total Test Runner Runs
2,194,219
Test Run Pass Rate
20.0% (438429)
Test Run Fail Rate
67.4% (1479390)
Test Run Error Rate
12.6% (276400)

Representer

Learn More

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

Current version: f805395de74abc816e16ee22db438ae5aef38018 (Takes up to 10 mins to deploy)

Total Representer Runs
420,010
Total Representation Comments Made
69,231
Feedback Given Frequency
16.5%

Analyzer

Learn More

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

Current version: b768a73f234165ff8a4b7f559dbea9a041e4fc6a (Takes up to 10 mins to deploy)

Total Analyzer Runs
397,254
Total Analysis Comments Made
15,477
Feedback Given Frequency
0.7%