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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

49,115

Submissions

1,338,122

Mentoring Discussions

35,311

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

9,374 learnt

Instance Variables

6,517 learnt

Nil

6,517 learnt

Booleans

5,470 learnt

Strings

6,016 learnt

Conditionals

4,280 learnt

Floating Point Numbers

4,280 learnt

Numbers

4,280 learnt

Loops

3,133 learnt

Modules

3,133 learnt

Symbols

663 learnt

Ranges

427 learnt

Case

138 learnt

Arrays

3,056 learnt

Enumeration

3,056 learnt

Advanced Enumeration

2,487 learnt

Ostruct

2,047 learnt

Multiple Assignment and Decomposition

743 learnt

Ternary operator

2,007 learnt

Raising Exceptions

2,979 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Lasagna

12,052

67,449 (avg. 5.6)

9,374 (77.8%)

126 (1.0%)

Amusement Park

6,999

35,014 (avg. 5.0)

6,517 (93.1%)

77 (1.1%)

Amusement Park Improvements

5,716

36,469 (avg. 6.4)

5,470 (95.7%)

48 (0.8%)

Log line Parser

7,174

88,403 (avg. 12.3)

6,016 (83.9%)

161 (2.2%)

Assembly Line

4,563

36,400 (avg. 8.0)

4,280 (93.8%)

70 (1.5%)

Savings Account

3,570

52,007 (avg. 14.6)

3,133 (87.8%)

60 (1.7%)

Port Of Palermo

700

5,214 (avg. 7.4)

663 (94.7%)

15 (2.1%)

Chess Game

453

6,288 (avg. 13.9)

427 (94.3%)

13 (2.9%)

BlackJack

157

2,122 (avg. 13.5)

138 (87.9%)

6 (3.8%)

Bird Count

3,170

24,461 (avg. 7.7)

3,056 (96.4%)

35 (1.1%)

Boutique Inventory

2,664

49,398 (avg. 18.5)

2,487 (93.4%)

49 (1.8%)

Boutique Inventory Improvements

2,240

22,313 (avg. 10.0)

2,047 (91.4%)

32 (1.4%)

Locomotive Engineer

874

10,459 (avg. 12.0)

743 (85.0%)

13 (1.5%)

Moviegoer

2,045

14,292 (avg. 7.0)

2,007 (98.1%)

25 (1.2%)

Simple Calculator

4,005

72,015 (avg. 18.0)

2,979 (74.4%)

103 (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: 6d7363ebf57601a703de2cc5fcf30fb29d039217 (Updates should be instant)

Next goal: Implement 130 practice exercises. Find out more.

96 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

32,223

51,748 (avg. 1.6)

28,351 (88.0%)

112 (0.3%)

Two Fer

11,470

42,561 (avg. 3.7)

9,336 (81.4%)

3,794 (33.1%)

Resistor Color Duo

5,462

22,356 (avg. 4.1)

4,372 (80.0%)

1,589 (29.1%)

Acronym

7,221

30,681 (avg. 4.2)

5,979 (82.8%)

2,161 (29.9%)

High Scores

4,784

17,074 (avg. 3.6)

4,013 (83.9%)

1,376 (28.8%)

Matrix

4,343

21,765 (avg. 5.0)

3,433 (79.0%)

1,156 (26.6%)

Series

4,234

18,068 (avg. 4.3)

3,571 (84.3%)

843 (19.9%)

Word Count

6,009

29,800 (avg. 5.0)

4,960 (82.5%)

1,998 (33.3%)

Hamming

12,075

28,364 (avg. 2.3)

11,343 (93.9%)

3,349 (27.7%)

Raindrops

7,879

21,100 (avg. 2.7)

7,432 (94.3%)

1,413 (17.9%)

Isogram

3,576

21,311 (avg. 6.0)

3,096 (86.6%)

625 (17.5%)

Scrabble Score

2,814

15,232 (avg. 5.4)

2,425 (86.2%)

527 (18.7%)

Luhn

2,635

25,058 (avg. 9.5)

1,936 (73.5%)

373 (14.2%)

Clock

2,543

20,361 (avg. 8.0)

1,873 (73.7%)

379 (14.9%)

Twelve Days

1,911

9,597 (avg. 5.0)

1,351 (70.7%)

237 (12.4%)

Tournament

2,709

36,287 (avg. 13.4)

1,309 (48.3%)

234 (8.6%)

Gigasecond

10,548

14,651 (avg. 1.4)

9,456 (89.6%)

1,163 (11.0%)

Resistor Color

2,205

5,093 (avg. 2.3)

1,916 (86.9%)

108 (4.9%)

RNA Transcription

9,006

20,490 (avg. 2.3)

8,408 (93.4%)

1,619 (18.0%)

Leap

5,351

11,058 (avg. 2.1)

4,711 (88.0%)

699 (13.1%)

Pangram

5,044

12,938 (avg. 2.6)

4,633 (91.9%)

622 (12.3%)

Space Age

2,435

8,255 (avg. 3.4)

2,067 (84.9%)

239 (9.8%)

Triangle

1,787

8,918 (avg. 5.0)

1,511 (84.6%)

131 (7.3%)

Difference of Squares

6,042

11,447 (avg. 1.9)

5,769 (95.5%)

933 (15.4%)

Anagram

2,432

8,554 (avg. 3.5)

2,166 (89.1%)

710 (29.2%)

Sum of Multiples

2,403

8,654 (avg. 3.6)

2,030 (84.5%)

137 (5.7%)

Transpose

1,009

13,885 (avg. 13.8)

569 (56.4%)

32 (3.2%)

Armstrong Numbers

1,151

4,272 (avg. 3.7)

969 (84.2%)

20 (1.7%)

Flatten Array

2,429

5,288 (avg. 2.2)

1,898 (78.1%)

110 (4.5%)

Phone Number

2,296

12,923 (avg. 5.6)

1,894 (82.5%)

161 (7.0%)

Grains

3,587

7,662 (avg. 2.1)

3,285 (91.6%)

627 (17.5%)

Resistor Color Trio

648

4,628 (avg. 7.1)

532 (82.1%)

20 (3.1%)

Saddle Points

863

3,720 (avg. 4.3)

688 (79.7%)

28 (3.2%)

ETL

1,842

3,681 (avg. 2.0)

1,637 (88.9%)

122 (6.6%)

Nucleotide Count

1,391

5,710 (avg. 4.1)

1,198 (86.1%)

271 (19.5%)

Pythagorean Triplet

738

3,999 (avg. 5.4)

512 (69.4%)

20 (2.7%)

Collatz Conjecture

910

3,390 (avg. 3.7)

739 (81.2%)

27 (3.0%)

Sieve

3,438

7,322 (avg. 2.1)

3,163 (92.0%)

284 (8.3%)

Proverb

912

4,110 (avg. 4.5)

761 (83.4%)

96 (10.5%)

Palindrome Products

872

3,784 (avg. 4.3)

571 (65.5%)

27 (3.1%)

Bob

4,858

15,926 (avg. 3.3)

4,394 (90.4%)

3,163 (65.1%)

Nth Prime

2,900

6,893 (avg. 2.4)

2,621 (90.4%)

243 (8.4%)

Perfect Numbers

511

1,565 (avg. 3.1)

412 (80.6%)

10 (2.0%)

Alphametics

882

3,332 (avg. 3.8)

326 (37.0%)

25 (2.8%)

Binary Search

620

2,502 (avg. 4.0)

455 (73.4%)

24 (3.9%)

Two Bucket

703

3,368 (avg. 4.8)

240 (34.1%)

19 (2.7%)

Matching Brackets

716

2,636 (avg. 3.7)

495 (69.1%)

24 (3.4%)

All Your Base

498

3,354 (avg. 6.7)

320 (64.3%)

7 (1.4%)

Allergies

532

2,046 (avg. 3.8)

408 (76.7%)

20 (3.8%)

Rail Fence Cipher

547

1,815 (avg. 3.3)

302 (55.2%)

7 (1.3%)

Run-Length Encoding

1,562

4,713 (avg. 3.0)

1,289 (82.5%)

84 (5.4%)

Minesweeper

443

1,796 (avg. 4.1)

290 (65.5%)

4 (0.9%)

Robot Simulator

559

2,677 (avg. 4.8)

397 (71.0%)

23 (4.1%)

Beer Song

1,471

6,735 (avg. 4.6)

1,170 (79.5%)

175 (11.9%)

Protein Translation

575

4,023 (avg. 7.0)

451 (78.4%)

18 (3.1%)

Wordy

645

4,558 (avg. 7.1)

460 (71.3%)

27 (4.2%)

Secret Handshake

521

1,918 (avg. 3.7)

392 (75.2%)

17 (3.3%)

Atbash Cipher

645

3,586 (avg. 5.6)

529 (82.0%)

20 (3.1%)

Crypto Square

902

3,416 (avg. 3.8)

688 (76.3%)

27 (3.0%)

List Ops

533

3,391 (avg. 6.4)

331 (62.1%)

7 (1.3%)

Robot Name

2,768

4,811 (avg. 1.7)

2,406 (86.9%)

487 (17.6%)

Simple Cipher

602

3,689 (avg. 6.1)

398 (66.1%)

22 (3.7%)

Dominoes

282

1,487 (avg. 5.3)

130 (46.1%)

9 (3.2%)

Pig Latin

491

2,831 (avg. 5.8)

344 (70.1%)

17 (3.5%)

Simple Linked List

648

4,739 (avg. 7.3)

434 (67.0%)

29 (4.5%)

Binary Search Tree

1,149

3,767 (avg. 3.3)

828 (72.1%)

92 (8.0%)

Change

423

3,006 (avg. 7.1)

194 (45.9%)

12 (2.8%)

Circular Buffer

465

2,232 (avg. 4.8)

348 (74.8%)

20 (4.3%)

Grade School

1,872

3,987 (avg. 2.1)

1,554 (83.0%)

216 (11.5%)

Roman Numerals

3,698

7,096 (avg. 1.9)

3,325 (89.9%)

317 (8.6%)

Rotational Cipher

473

3,448 (avg. 7.3)

366 (77.4%)

14 (3.0%)

Affine Cipher

323

1,771 (avg. 5.5)

192 (59.4%)

6 (1.9%)

Kindergarten Garden

477

2,779 (avg. 5.8)

347 (72.7%)

13 (2.7%)

Largest Series Product

425

1,813 (avg. 4.3)

340 (80.0%)

10 (2.4%)

Prime Factors

1,221

2,557 (avg. 2.1)

1,078 (88.3%)

59 (4.8%)

Custom Set

330

1,167 (avg. 3.5)

238 (72.1%)

9 (2.7%)

House

512

1,774 (avg. 3.5)

393 (76.8%)

28 (5.5%)

Linked List

442

921 (avg. 2.1)

297 (67.2%)

21 (4.8%)

Poker

329

1,094 (avg. 3.3)

141 (42.9%)

13 (4.0%)

ISBN Verifier

638

5,096 (avg. 8.0)

475 (74.5%)

23 (3.6%)

Complex Numbers

316

1,569 (avg. 5.0)

193 (61.1%)

8 (2.5%)

Meetup

2,090

7,926 (avg. 3.8)

744 (35.6%)

69 (3.3%)

Diamond

635

5,587 (avg. 8.8)

398 (62.7%)

26 (4.1%)

Bowling

1,145

10,124 (avg. 8.8)

539 (47.1%)

40 (3.5%)

OCR Numbers

339

1,253 (avg. 3.7)

242 (71.4%)

6 (1.8%)

Say

558

1,922 (avg. 3.4)

389 (69.7%)

11 (2.0%)

Zipper

235

721 (avg. 3.1)

101 (43.0%)

1 (0.4%)

Grep

374

2,522 (avg. 6.7)

177 (47.3%)

3 (0.8%)

Food Chain

881

1,793 (avg. 2.0)

744 (84.4%)

50 (5.7%)

Pascal's Triangle

314

928 (avg. 3.0)

237 (75.5%)

10 (3.2%)

Queen Attack

593

1,622 (avg. 2.7)

457 (77.1%)

24 (4.0%)

Book Store

483

3,018 (avg. 6.2)

164 (34.0%)

5 (1.0%)

Connect

306

1,233 (avg. 4.0)

133 (43.5%)

7 (2.3%)

Microwave

2,039

15,044 (avg. 7.4)

951 (46.6%)

65 (3.2%)

Darts

856

2,741 (avg. 3.2)

657 (76.8%)

29 (3.4%)

Gilded Rose

383 (avg. 20.2)

12 (63.2%)

2 (10.5%)

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

578 (avg. 1.4)

385 (91.0%)

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

1,933 (avg. 3.8)

264 (52.0%)

9 (1.8%)

Strain

1,381

2,274 (avg. 1.6)

1,173 (84.9%)

96 (7.0%)

Trinary

785

1,055 (avg. 1.3)

746 (95.0%)

49 (6.2%)

34 unimplemented practice exercises

Bank Account

Bottle Song

D&D Character

DOT DSL

Eliud's Eggs

Error Handling

Forth

Go Counting

Hangman

Killer Sudoku Helper

Knapsack

Ledger

Lens Person

Markdown

Micro Blog

POV

PaaS I/O

Parallel Letter Frequency

REST API

Rational Numbers

React

Rectangles

Reverse String

SGF Parsing

Satellite

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Sublist

Tree Building

Variable Length Quantity

Word Search

Yacht

Zebra Puzzle

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: 38c5267935f32f7b4171214ddf9183f79692fc41 (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

1,186,753

Test Run Pass Rate

22.7% (269534)

Test Run Fail Rate

65.0% (771688)

Test Run Error Rate

12.3% (145531)

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: d12dbfbafbec126b8c64f3357a1d3dae65cac2fd (Takes up to 10 mins to deploy)

Total Representer Runs

273,013

Total Representation Comments Made

34,434

Feedback Given Frequency

12.6%

Analyzer

Learn More

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

Current version: 8d102a182f766f6279e9ed8c4a772ceb0288d56d (Takes up to 10 mins to deploy)

Total Analyzer Runs

131,630

Total Analysis Comments Made

5,203

Feedback Given Frequency

0.4%

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