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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

51,554

Submissions

1,533,519

Mentoring Discussions

35,609

The Ruby track is healthy ✅

Building

Ruby syllabus

Learn More

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.

20 concepts being taught

Basics

10,733 learnt

Instance Variables

7,532 learnt

Nil

7,532 learnt

Booleans

6,337 learnt

Strings

6,959 learnt

Conditionals

4,999 learnt

Floating Point Numbers

4,999 learnt

Numbers

4,999 learnt

Loops

3,631 learnt

Modules

3,631 learnt

Symbols

1,216 learnt

Ranges

908 learnt

Case

571 learnt

Arrays

3,415 learnt

Enumeration

3,415 learnt

Advanced Enumeration

2,812 learnt

Ostruct

2,340 learnt

Multiple Assignment and Decomposition

1,012 learnt

Ternary operator

2,295 learnt

Raising Exceptions

3,364 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Lasagna

13,797

77,369 (avg. 5.6)

10,733 (77.8%)

142 (1.0%)

Amusement Park

8,114

39,979 (avg. 4.9)

7,532 (92.8%)

86 (1.1%)

Amusement Park Improvements

6,627

41,908 (avg. 6.3)

6,337 (95.6%)

59 (0.9%)

Log line Parser

8,285

101,757 (avg. 12.3)

6,959 (84.0%)

184 (2.2%)

Assembly Line

5,341

42,711 (avg. 8.0)

4,999 (93.6%)

77 (1.4%)

Savings Account

4,144

59,917 (avg. 14.5)

3,631 (87.6%)

67 (1.6%)

Port Of Palermo

1,285

9,775 (avg. 7.6)

1,216 (94.6%)

18 (1.4%)

Chess Game

970

13,870 (avg. 14.3)

908 (93.6%)

21 (2.2%)

BlackJack

627

9,479 (avg. 15.1)

571 (91.1%)

14 (2.2%)

Bird Count

3,543

26,957 (avg. 7.6)

3,415 (96.4%)

37 (1.0%)

Boutique Inventory

3,010

56,548 (avg. 18.8)

2,812 (93.4%)

52 (1.7%)

Boutique Inventory Improvements

2,549

25,416 (avg. 10.0)

2,340 (91.8%)

33 (1.3%)

Locomotive Engineer

1,175

14,808 (avg. 12.6)

1,012 (86.1%)

16 (1.4%)

Moviegoer

2,341

16,466 (avg. 7.0)

2,295 (98.0%)

25 (1.1%)

Simple Calculator

4,494

80,476 (avg. 17.9)

3,364 (74.9%)

116 (2.6%)

Practice Exercises

Learn More

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: 6c7777a7c34b031174be09746f2da52b0ba652f5 (Updates should be instant)

Next goal: Implement 131 practice exercises. Find out more.

103 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

34,853

56,475 (avg. 1.6)

30,465 (87.4%)

112 (0.3%)

Two Fer

12,034

47,413 (avg. 3.9)

9,839 (81.8%)

3,806 (31.6%)

Resistor Color Duo

5,698

24,802 (avg. 4.4)

4,598 (80.7%)

1,597 (28.0%)

Acronym

7,586

33,866 (avg. 4.5)

6,299 (83.0%)

2,172 (28.6%)

High Scores

5,000

18,880 (avg. 3.8)

4,218 (84.4%)

1,377 (27.5%)

Reverse String

434

1,579 (avg. 3.6)

351 (80.9%)

4 (0.9%)

D&D Character

237

2,894 (avg. 12.2)

152 (64.1%)

7 (3.0%)

Matrix

4,539

24,622 (avg. 5.4)

3,599 (79.3%)

1,157 (25.5%)

Series

4,415

20,881 (avg. 4.7)

3,739 (84.7%)

845 (19.1%)

Word Count

6,199

33,373 (avg. 5.4)

5,111 (82.4%)

2,000 (32.3%)

Hamming

12,240

29,692 (avg. 2.4)

11,500 (94.0%)

3,350 (27.4%)

Raindrops

8,495

25,415 (avg. 3.0)

7,999 (94.2%)

1,424 (16.8%)

Isogram

3,820

24,007 (avg. 6.3)

3,320 (86.9%)

631 (16.5%)

Scrabble Score

2,966

16,472 (avg. 5.6)

2,571 (86.7%)

532 (17.9%)

Luhn

2,827

29,167 (avg. 10.3)

2,093 (74.0%)

381 (13.5%)

Clock

2,693

23,007 (avg. 8.5)

1,977 (73.4%)

383 (14.2%)

Twelve Days

2,049

11,163 (avg. 5.4)

1,456 (71.1%)

243 (11.9%)

Tournament

2,970

42,657 (avg. 14.4)

1,430 (48.1%)

248 (8.4%)

Gigasecond

10,640

15,057 (avg. 1.4)

9,537 (89.6%)

1,164 (10.9%)

Resistor Color

2,304

5,505 (avg. 2.4)

2,012 (87.3%)

111 (4.8%)

RNA Transcription

9,194

21,573 (avg. 2.3)

8,583 (93.4%)

1,623 (17.7%)

Leap

5,576

12,321 (avg. 2.2)

4,896 (87.8%)

705 (12.6%)

Pangram

5,183

13,992 (avg. 2.7)

4,759 (91.8%)

627 (12.1%)

Space Age

2,551

9,082 (avg. 3.6)

2,168 (85.0%)

241 (9.4%)

Triangle

1,895

10,072 (avg. 5.3)

1,605 (84.7%)

131 (6.9%)

Difference of Squares

6,153

12,101 (avg. 2.0)

5,869 (95.4%)

934 (15.2%)

Anagram

2,533

9,622 (avg. 3.8)

2,253 (88.9%)

711 (28.1%)

Spiral Matrix

1,206 (avg. 15.3)

46 (58.2%)

4 (5.1%)

Sum of Multiples

2,491

9,583 (avg. 3.8)

2,106 (84.5%)

137 (5.5%)

Transpose

1,093

16,715 (avg. 15.3)

620 (56.7%)

35 (3.2%)

Armstrong Numbers

1,232

4,688 (avg. 3.8)

1,040 (84.4%)

22 (1.8%)

Flatten Array

2,523

5,676 (avg. 2.2)

1,989 (78.8%)

110 (4.4%)

Phone Number

2,386

14,311 (avg. 6.0)

1,963 (82.3%)

164 (6.9%)

Grains

3,647

8,016 (avg. 2.2)

3,344 (91.7%)

627 (17.2%)

Resistor Color Trio

705

5,483 (avg. 7.8)

588 (83.4%)

21 (3.0%)

Saddle Points

918

4,538 (avg. 4.9)

728 (79.3%)

31 (3.4%)

ETL

1,900

4,031 (avg. 2.1)

1,688 (88.8%)

123 (6.5%)

Nucleotide Count

1,451

6,614 (avg. 4.6)

1,250 (86.1%)

273 (18.8%)

Pythagorean Triplet

786

4,659 (avg. 5.9)

541 (68.8%)

22 (2.8%)

Collatz Conjecture

989

3,947 (avg. 4.0)

813 (82.2%)

30 (3.0%)

Sieve

3,511

7,856 (avg. 2.2)

3,222 (91.8%)

285 (8.1%)

Proverb

957

4,823 (avg. 5.0)

804 (84.0%)

97 (10.1%)

Palindrome Products

918

4,725 (avg. 5.1)

600 (65.4%)

28 (3.1%)

Parallel Letter Frequency

1,084 (avg. 17.8)

40 (65.6%)

3 (4.9%)

Bob

4,924

17,011 (avg. 3.5)

4,447 (90.3%)

3,167 (64.3%)

Nth Prime

2,960

7,372 (avg. 2.5)

2,671 (90.2%)

243 (8.2%)

Perfect Numbers

544

1,775 (avg. 3.3)

443 (81.4%)

11 (2.0%)

Alphametics

915

3,520 (avg. 3.8)

340 (37.2%)

29 (3.2%)

Binary Search

658

2,733 (avg. 4.2)

487 (74.0%)

26 (4.0%)

Two Bucket

789

4,032 (avg. 5.1)

264 (33.5%)

19 (2.4%)

Matching Brackets

747

2,761 (avg. 3.7)

518 (69.3%)

24 (3.2%)

All Your Base

539

3,631 (avg. 6.7)

349 (64.7%)

7 (1.3%)

Allergies

576

2,440 (avg. 4.2)

443 (76.9%)

20 (3.5%)

Rail Fence Cipher

563

1,951 (avg. 3.5)

316 (56.1%)

9 (1.6%)

Run-Length Encoding

1,592

5,278 (avg. 3.3)

1,310 (82.3%)

85 (5.3%)

Minesweeper

468

2,079 (avg. 4.4)

304 (65.0%)

5 (1.1%)

Robot Simulator

594

3,164 (avg. 5.3)

421 (70.9%)

24 (4.0%)

Beer Song

1,523

7,634 (avg. 5.0)

1,209 (79.4%)

176 (11.6%)

Protein Translation

650

4,935 (avg. 7.6)

518 (79.7%)

18 (2.8%)

Wordy

686

5,254 (avg. 7.7)

486 (70.8%)

27 (3.9%)

Secret Handshake

546

2,202 (avg. 4.0)

414 (75.8%)

20 (3.7%)

Atbash Cipher

690

4,333 (avg. 6.3)

569 (82.5%)

21 (3.0%)

Crypto Square

944

3,990 (avg. 4.2)

715 (75.7%)

27 (2.9%)

List Ops

590

4,212 (avg. 7.1)

373 (63.2%)

8 (1.4%)

Robot Name

2,793

4,851 (avg. 1.7)

2,428 (86.9%)

489 (17.5%)

Simple Cipher

653

4,093 (avg. 6.3)

423 (64.8%)

22 (3.4%)

Dominoes

296

1,536 (avg. 5.2)

141 (47.6%)

9 (3.0%)

Pig Latin

512

3,010 (avg. 5.9)

358 (69.9%)

18 (3.5%)

Simple Linked List

683

5,081 (avg. 7.4)

455 (66.6%)

29 (4.2%)

Binary Search Tree

1,179

3,946 (avg. 3.3)

853 (72.3%)

94 (8.0%)

Change

442

3,198 (avg. 7.2)

207 (46.8%)

13 (2.9%)

Circular Buffer

517

2,984 (avg. 5.8)

382 (73.9%)

22 (4.3%)

Grade School

1,891

4,110 (avg. 2.2)

1,568 (82.9%)

216 (11.4%)

Roman Numerals

3,772

7,778 (avg. 2.1)

3,387 (89.8%)

319 (8.5%)

Rotational Cipher

517

3,934 (avg. 7.6)

398 (77.0%)

16 (3.1%)

Affine Cipher

349

2,033 (avg. 5.8)

208 (59.6%)

6 (1.7%)

Kindergarten Garden

489

2,813 (avg. 5.8)

357 (73.0%)

13 (2.7%)

Largest Series Product

448

2,134 (avg. 4.8)

357 (79.7%)

10 (2.2%)

Prime Factors

1,250

2,945 (avg. 2.4)

1,103 (88.2%)

60 (4.8%)

Custom Set

344

1,294 (avg. 3.8)

251 (73.0%)

9 (2.6%)

House

538

1,872 (avg. 3.5)

406 (75.5%)

29 (5.4%)

Linked List

471

1,008 (avg. 2.1)

319 (67.7%)

21 (4.5%)

Poker

346

1,219 (avg. 3.5)

150 (43.4%)

13 (3.8%)

ISBN Verifier

689

5,631 (avg. 8.2)

511 (74.2%)

24 (3.5%)

Complex Numbers

338

1,728 (avg. 5.1)

210 (62.1%)

10 (3.0%)

Meetup

2,179

8,946 (avg. 4.1)

782 (35.9%)

73 (3.4%)

Diamond

689

6,193 (avg. 9.0)

432 (62.7%)

27 (3.9%)

Bowling

1,222

12,067 (avg. 9.9)

563 (46.1%)

41 (3.4%)

OCR Numbers

357

1,320 (avg. 3.7)

254 (71.1%)

6 (1.7%)

Say

573

1,971 (avg. 3.4)

399 (69.6%)

12 (2.1%)

Zipper

247

778 (avg. 3.1)

111 (44.9%)

1 (0.4%)

Grep

398

2,615 (avg. 6.6)

188 (47.2%)

3 (0.8%)

Food Chain

905

1,930 (avg. 2.1)

760 (84.0%)

51 (5.6%)

Pascal's Triangle

333

982 (avg. 2.9)

252 (75.7%)

10 (3.0%)

Queen Attack

607

1,698 (avg. 2.8)

470 (77.4%)

24 (4.0%)

Yacht

795 (avg. 18.5)

27 (62.8%)

6 (14.0%)

Book Store

513

3,209 (avg. 6.3)

179 (34.9%)

7 (1.4%)

Connect

320

1,305 (avg. 4.1)

143 (44.7%)

7 (2.2%)

Microwave

2,122

15,650 (avg. 7.4)

991 (46.7%)

70 (3.3%)

Darts

917

2,990 (avg. 3.3)

701 (76.4%)

30 (3.3%)

Gilded Rose

834 (avg. 12.4)

30 (44.8%)

3 (4.5%)

Knapsack

213 (avg. 11.8)

7 (38.9%)

4 (22.2%)

Zebra Puzzle

82 (avg. 3.9)

4 (19.0%)

0 (0.0%)

8 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

1,813

3,336 (avg. 1.8)

1,572 (86.7%)

172 (9.5%)

Binary

1,354

1,990 (avg. 1.5)

1,258 (92.9%)

128 (9.5%)

Hexadecimal

423

580 (avg. 1.4)

386 (91.3%)

25 (5.9%)

Octal

13 (avg. 0.9)

11 (78.6%)

0 (0.0%)

Point Mutations

143 (avg. 2.5)

55 (96.5%)

44 (77.2%)

Scale Generator

508

1,934 (avg. 3.8)

264 (52.0%)

10 (2.0%)

Strain

1,381

2,304 (avg. 1.7)

1,173 (84.9%)

97 (7.0%)

Trinary

785

1,055 (avg. 1.3)

746 (95.0%)

49 (6.2%)

28 unimplemented practice exercises

Bank Account

View data

Bottle Song

View data

Conway's Game of Life

DOT DSL

Eliud's Eggs

Error Handling

Forth

Go Counting

Hangman

Killer Sudoku Helper

Ledger

Lens Person

Markdown

Micro Blog

PaaS I/O

POV

Rational Numbers

React

Rectangles

REST API

Satellite

SGF Parsing

Square Root

State of Tic-Tac-Toe

Sublist

Tree Building

Variable Length Quantity

View data

Word Search

View data

Programming Tags

Learn More

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

0 tags

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: b2f8b0ed8002ddd4eeb8f58f1c281e300b8bdaa0 (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

1,418,157

Test Run Pass Rate

21.2% (301271)

Test Run Fail Rate

66.3% (940590)

Test Run Error Rate

12.4% (176296)

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: 7f7f5d8e57837c936bf3c8551f43a09224a4269c (Takes up to 10 mins to deploy)

Total Representer Runs

310,637

Total Representation Comments Made

48,341

Feedback Given Frequency

15.6%

Analyzer

Learn More

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

Current version: 2988acd802311c15a384bf81177f99b9f0822298 (Takes up to 10 mins to deploy)

Total Analyzer Runs

288,298

Total Analysis Comments Made

10,528

Feedback Given Frequency

0.7%

Volunteers

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