TypeScript impact and status on Exercism

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

Students

81,169

Submissions

1,334,556

Mentoring Discussions

9,321

The TypeScript track is healthy ✅

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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: f9a92898c62cccfe160d51eaffa23a9033adb729 (Updates should be instant)

Next goal: Implement 138 practice exercises. Find out more.

100 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

58,372

83,976 (avg. 1.4)

46,704 (80.0%)

6 (0.0%)

Two Fer

36,424

125,330 (avg. 3.4)

27,679 (76.0%)

1,945 (5.3%)

Resistor Color

16,385

84,956 (avg. 5.2)

12,068 (73.7%)

511 (3.1%)

Resistor Color Duo

21,935

164,662 (avg. 7.5)

14,906 (68.0%)

1,400 (6.4%)

Resistor Color Trio

11,742

121,769 (avg. 10.4)

7,624 (64.9%)

474 (4.0%)

Leap

13,937

47,166 (avg. 3.4)

11,524 (82.7%)

1,450 (10.4%)

RNA Transcription

9,902

65,167 (avg. 6.6)

8,002 (80.8%)

704 (7.1%)

Space Age

8,092

53,654 (avg. 6.6)

6,374 (78.8%)

383 (4.7%)

D&D Character

5,787

44,472 (avg. 7.7)

3,769 (65.1%)

161 (2.8%)

Darts

2,870

10,130 (avg. 3.5)

2,205 (76.8%)

51 (1.8%)

Pangram

6,297

28,246 (avg. 4.5)

5,084 (80.7%)

279 (4.4%)

Bob

5,783

49,602 (avg. 8.6)

4,013 (69.4%)

275 (4.8%)

Matrix

5,315

36,564 (avg. 6.9)

3,365 (63.3%)

221 (4.2%)

Robot Name

4,757

34,940 (avg. 7.3)

2,659 (55.9%)

200 (4.2%)

Grade School

3,174

36,748 (avg. 11.6)

1,980 (62.4%)

131 (4.1%)

Clock

2,458

21,370 (avg. 8.7)

1,631 (66.4%)

83 (3.4%)

Secret Handshake

1,908

9,444 (avg. 4.9)

1,461 (76.6%)

64 (3.4%)

Binary Search

2,132

12,018 (avg. 5.6)

1,563 (73.3%)

45 (2.1%)

Linked List

2,040

16,433 (avg. 8.1)

1,263 (61.9%)

78 (3.8%)

Rational Numbers

1,078

9,713 (avg. 9.0)

722 (67.0%)

27 (2.5%)

Atbash Cipher

1,160

8,936 (avg. 7.7)

934 (80.5%)

34 (2.9%)

Simple Cipher

1,577

6,552 (avg. 4.2)

889 (56.4%)

158 (10.0%)

Wordy

1,120

12,962 (avg. 11.6)

633 (56.5%)

26 (2.3%)

List Ops

1,314

11,031 (avg. 8.4)

517 (39.3%)

37 (2.8%)

Word Count

3,172

18,462 (avg. 5.8)

2,081 (65.6%)

96 (3.0%)

Difference of Squares

2,414

7,080 (avg. 2.9)

1,912 (79.2%)

77 (3.2%)

Gigasecond

2,599

6,122 (avg. 2.4)

1,872 (72.0%)

81 (3.1%)

Square Root

88 (avg. 1.8)

43 (86.0%)

0 (0.0%)

Reverse String

2,855

5,910 (avg. 2.1)

2,457 (86.1%)

49 (1.7%)

Triangle

1,743

10,093 (avg. 5.8)

1,313 (75.3%)

40 (2.3%)

Collatz Conjecture

1,153

3,761 (avg. 3.3)

926 (80.3%)

19 (1.6%)

ETL

1,242

5,557 (avg. 4.5)

964 (77.6%)

18 (1.4%)

Protein Translation

1,268

8,539 (avg. 6.7)

979 (77.2%)

29 (2.3%)

Raindrops

1,416

4,477 (avg. 3.2)

1,217 (85.9%)

16 (1.1%)

Hamming

1,248

3,196 (avg. 2.6)

1,063 (85.2%)

13 (1.0%)

Nucleotide Count

958

3,786 (avg. 4.0)

730 (76.2%)

14 (1.5%)

Scrabble Score

1,097

4,904 (avg. 4.5)

863 (78.7%)

23 (2.1%)

Allergies

854

4,833 (avg. 5.7)

579 (67.8%)

14 (1.6%)

Perfect Numbers

962

3,767 (avg. 3.9)

777 (80.8%)

16 (1.7%)

Complex Numbers

585

2,396 (avg. 4.1)

379 (64.8%)

3 (0.5%)

Luhn

883

5,075 (avg. 5.7)

666 (75.4%)

17 (1.9%)

Grains

649

2,997 (avg. 4.6)

489 (75.3%)

8 (1.2%)

Pythagorean Triplet

610

2,449 (avg. 4.0)

336 (55.1%)

5 (0.8%)

Relative Distance

159 (avg. 6.9)

12 (52.2%)

1 (4.3%)

Sum of Multiples

650

2,910 (avg. 4.5)

472 (72.6%)

8 (1.2%)

Acronym

1,123

8,544 (avg. 7.6)

826 (73.6%)

13 (1.2%)

Anagram

1,072

5,930 (avg. 5.5)

837 (78.1%)

12 (1.1%)

Isogram

1,104

4,540 (avg. 4.1)

888 (80.4%)

8 (0.7%)

Roman Numerals

906

3,540 (avg. 3.9)

656 (72.4%)

9 (1.0%)

Series

848

4,757 (avg. 5.6)

636 (75.0%)

11 (1.3%)

Phone Number

772

5,670 (avg. 7.3)

535 (69.3%)

3 (0.4%)

Two Bucket

452

1,865 (avg. 4.1)

198 (43.8%)

3 (0.7%)

Variable Length Quantity

334

1,502 (avg. 4.5)

174 (52.1%)

1 (0.3%)

Largest Series Product

441

1,956 (avg. 4.4)

310 (70.3%)

13 (2.9%)

Food Chain

378

1,773 (avg. 4.7)

233 (61.6%)

0 (0.0%)

House

362

1,614 (avg. 4.5)

210 (58.0%)

3 (0.8%)

ISBN Verifier

487

2,014 (avg. 4.1)

347 (71.3%)

8 (1.6%)

Pig Latin

389

1,808 (avg. 4.6)

238 (61.2%)

6 (1.5%)

Proverb

338

872 (avg. 2.6)

249 (73.7%)

1 (0.3%)

Twelve Days

392

1,592 (avg. 4.1)

252 (64.3%)

3 (0.8%)

Beer Song

491

5,021 (avg. 10.2)

289 (58.9%)

1 (0.2%)

Say

337

1,835 (avg. 5.4)

202 (59.9%)

0 (0.0%)

Rectangles

265

848 (avg. 3.2)

126 (47.5%)

0 (0.0%)

Saddle Points

314

1,047 (avg. 3.3)

192 (61.1%)

5 (1.6%)

Spiral Matrix

305

1,102 (avg. 3.6)

182 (59.7%)

4 (1.3%)

Transpose

360

2,667 (avg. 7.4)

203 (56.4%)

1 (0.3%)

OCR Numbers

252

1,402 (avg. 5.6)

142 (56.3%)

3 (1.2%)

Nth Prime

406

1,360 (avg. 3.3)

286 (70.4%)

4 (1.0%)

Alphametics

255

1,154 (avg. 4.5)

88 (34.5%)

1 (0.4%)

Connect

203

693 (avg. 3.4)

92 (45.3%)

2 (1.0%)

Bowling

540

5,168 (avg. 9.6)

181 (33.5%)

8 (1.5%)

Prime Factors

386

934 (avg. 2.4)

282 (73.1%)

12 (3.1%)

Diamond

278

1,210 (avg. 4.4)

159 (57.2%)

0 (0.0%)

Pascal's Triangle

313

985 (avg. 3.1)

199 (63.6%)

5 (1.6%)

Binary Search Tree

414

1,938 (avg. 4.7)

251 (60.6%)

4 (1.0%)

Sublist

315

1,796 (avg. 5.7)

187 (59.4%)

2 (0.6%)

Custom Set

326

1,954 (avg. 6.0)

182 (55.8%)

1 (0.3%)

Circular Buffer

541

2,288 (avg. 4.2)

324 (59.9%)

7 (1.3%)

Word Search

478

2,217 (avg. 4.6)

166 (34.7%)

7 (1.5%)

Sieve

271

684 (avg. 2.5)

188 (69.4%)

2 (0.7%)

Palindrome Products

276

2,089 (avg. 7.6)

123 (44.6%)

4 (1.4%)

Diffie-Hellman

714

2,379 (avg. 3.3)

483 (67.6%)

6 (0.8%)

Robot Simulator

592

3,851 (avg. 6.5)

375 (63.3%)

7 (1.2%)

Armstrong Numbers

1,400

5,769 (avg. 4.1)

1,044 (74.6%)

27 (1.9%)

Run-Length Encoding

1,153

5,336 (avg. 4.6)

753 (65.3%)

22 (1.9%)

Bank Account

314

1,732 (avg. 5.5)

220 (70.1%)

1 (0.3%)

Eliud's Eggs

243

628 (avg. 2.6)

195 (80.2%)

3 (1.2%)

Rotational Cipher

448

812 (avg. 1.8)

292 (65.2%)

9 (2.0%)

Strain

630

1,419 (avg. 2.3)

430 (68.3%)

16 (2.5%)

All Your Base

443

1,662 (avg. 3.8)

247 (55.8%)

5 (1.1%)

Flatten Array

754

3,273 (avg. 4.3)

484 (64.2%)

14 (1.9%)

Matching Brackets

631

2,747 (avg. 4.4)

389 (61.6%)

16 (2.5%)

Tournament

255

2,226 (avg. 8.7)

139 (54.5%)

2 (0.8%)

Minesweeper

500

2,142 (avg. 4.3)

267 (53.4%)

8 (1.6%)

Kindergarten Garden

300

1,228 (avg. 4.1)

179 (59.7%)

1 (0.3%)

Queen Attack

708

3,239 (avg. 4.6)

399 (56.4%)

23 (3.2%)

React

908

1,934 (avg. 2.1)

85 (9.4%)

1 (0.1%)

Crypto Square

428

1,588 (avg. 3.7)

227 (53.0%)

7 (1.6%)

Knapsack

508

2,814 (avg. 5.5)

180 (35.4%)

5 (1.0%)

Conway's Game of Life

103 (avg. 2.9)

22 (61.1%)

0 (0.0%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

386

884 (avg. 2.3)

266 (68.9%)

11 (2.8%)

38 unimplemented practice exercises

Affine Cipher

Baffling Birthdays

Book Store

Bottle Song

Change

Dominoes

DOT DSL

Error Handling

Flower Field

Forth

Go Counting

Grep

Hangman

High Scores

Intergalactic Transmission

Killer Sudoku Helper

Ledger

Lens Person

Markdown

Meetup

Micro Blog

PaaS I/O

Parallel Letter Frequency

Piecing It Together

Poker

POV

Rail Fence Cipher

REST API

Satellite

SGF Parsing

Simple Linked List

Split-Second Stopwatch

State of Tic-Tac-Toe

Swift Scheduling

Tree Building

Yacht

Zebra Puzzle

Zipper

Programming Tags

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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: 078ce57d389542e5c9f84ce27fa06904d38a5af2 (Takes up to 10 mins to deploy)

Total Test Runner Runs

1,302,524

Test Run Pass Rate

19.4% (253029)

Test Run Fail Rate

40.9% (533251)

Test Run Error Rate

39.6% (516244)

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: 970e41d244fe29d25e5836d1d504bae5d87ebf28 (Takes up to 10 mins to deploy)

Total Representer Runs

240,156

Total Representation Comments Made

55,415

Feedback Given Frequency

23.1%

Analyzer

Learn More

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

Current version: 8cda5a222e955b9ac0c1fc2150364a3ed0252515 (Takes up to 10 mins to deploy)

Total Analyzer Runs

239,486

Total Analysis Comments Made

11,363

Feedback Given Frequency

0.8%

Volunteers

523

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6,699

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6,162

SleeplessByte

5,721

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