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students have developed their Rust skills on Exercism.

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Build Test Runners

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

Next goal: Get Test Runners to Version 2. Rust is currently utilising a Version 1 Test Runner. Find out more.

Usage statistics

Total Test Runner Runs

1,663,848

Test Run Pass Rate

25.0% (416165)

Test Run Fail Rate

22.4% (372618)

Test Run Error Rate

52.6% (875065)

Build Analyzers

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

Usage statistics

Total Analyzer Runs

304,562

Total Analysis Comments Made

44,934

Feedback Given Frequency

1.2%

Build Representers

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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.

Usage statistics

Total Representer Runs

304,571

Total Representation Comments Made

Feedback Given Frequency

0.0%

Create 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.

Next goal: Implement 137 practice exercises. Find out more.

Usage statistics

97 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

63,768

106,764 (avg. 1.7)

56,919 (89.3%)

28 (0.0%)

Reverse String

23,108

63,039 (avg. 2.7)

17,017 (73.6%)

4,015 (17.4%)

Gigasecond

18,416

43,097 (avg. 2.3)

15,242 (82.8%)

3,857 (20.9%)

Clock

11,939

82,278 (avg. 6.9)

8,603 (72.1%)

2,743 (23.0%)

Anagram

6,904

40,132 (avg. 5.8)

5,216 (75.6%)

1,703 (24.7%)

Space Age

4,910

16,426 (avg. 3.3)

3,957 (80.6%)

1,091 (22.2%)

Sublist

11,564

66,493 (avg. 5.8)

6,863 (59.3%)

1,166 (10.1%)

Minesweeper

4,071

24,285 (avg. 6.0)

2,662 (65.4%)

635 (15.6%)

Luhn

3,964

21,292 (avg. 5.4)

3,285 (82.9%)

558 (14.1%)

Parallel Letter Frequency

2,823

14,011 (avg. 5.0)

1,683 (59.6%)

438 (15.5%)

Macros

2,150

9,720 (avg. 4.5)

1,595 (74.2%)

300 (14.0%)

Poker

3,467

20,418 (avg. 5.9)

1,016 (29.3%)

243 (7.0%)

Forth

1,418

9,960 (avg. 7.0)

674 (47.5%)

143 (10.1%)

Armstrong Numbers

7,676

26,957 (avg. 3.5)

6,400 (83.4%)

158 (2.1%)

Beer Song

10,487

40,629 (avg. 3.9)

8,304 (79.2%)

174 (1.7%)

Difference of Squares

9,036

16,497 (avg. 1.8)

8,188 (90.6%)

201 (2.2%)

Grains

7,748

20,105 (avg. 2.6)

6,859 (88.5%)

113 (1.5%)

Leap

17,579

23,042 (avg. 1.3)

15,129 (86.1%)

453 (2.6%)

Nth Prime

11,500

24,521 (avg. 2.1)

8,269 (71.9%)

327 (2.8%)

Prime Factors

6,000

12,976 (avg. 2.2)

4,923 (82.1%)

66 (1.1%)

Proverb

7,462

15,391 (avg. 2.1)

6,286 (84.2%)

110 (1.5%)

Raindrops

14,399

21,919 (avg. 1.5)

12,377 (86.0%)

384 (2.7%)

Sum of Multiples

7,507

17,415 (avg. 2.3)

6,294 (83.8%)

128 (1.7%)

Bob

7,885

23,454 (avg. 3.0)

6,410 (81.3%)

828 (10.5%)

High Scores

4,716

21,848 (avg. 4.6)

3,678 (78.0%)

89 (1.9%)

Matching Brackets

5,432

15,847 (avg. 2.9)

4,379 (80.6%)

242 (4.5%)

Acronym

3,168

12,452 (avg. 3.9)

2,369 (74.8%)

31 (1.0%)

All Your Base

1,987

6,974 (avg. 3.5)

1,502 (75.6%)

25 (1.3%)

Allergies

3,820

21,356 (avg. 5.6)

2,865 (75.0%)

107 (2.8%)

Alphametics

1,764

6,272 (avg. 3.6)

713 (40.4%)

40 (2.3%)

Binary Search

2,620

8,434 (avg. 3.2)

2,001 (76.4%)

32 (1.2%)

Bowling

2,212

11,185 (avg. 5.1)

1,229 (55.6%)

27 (1.2%)

DOT DSL

3,153

9,354 (avg. 3.0)

1,844 (58.5%)

48 (1.5%)

ETL

2,698

4,696 (avg. 1.7)

2,241 (83.1%)

27 (1.0%)

Grade School

2,415

7,547 (avg. 3.1)

2,007 (83.1%)

30 (1.2%)

Hamming

2,753

4,530 (avg. 1.6)

2,429 (88.2%)

51 (1.9%)

ISBN Verifier

1,986

6,347 (avg. 3.2)

1,563 (78.7%)

16 (0.8%)

Isogram

2,401

4,862 (avg. 2.0)

1,996 (83.1%)

18 (0.7%)

Nucleotide Count

3,126

7,658 (avg. 2.4)

2,671 (85.4%)

39 (1.2%)

PaaS I/O

2,373

2,981 (avg. 1.3)

1,431 (60.3%)

12 (0.5%)

Palindrome Products

1,255

5,289 (avg. 4.2)

812 (64.7%)

16 (1.3%)

Pangram

2,217

4,632 (avg. 2.1)

1,937 (87.4%)

39 (1.8%)

Pascal's Triangle

2,861

5,440 (avg. 1.9)

2,361 (82.5%)

28 (1.0%)

Perfect Numbers

1,592

3,254 (avg. 2.0)

1,317 (82.7%)

35 (2.2%)

Pig Latin

912

2,198 (avg. 2.4)

558 (61.2%)

6 (0.7%)

Queen Attack

2,100

4,362 (avg. 2.1)

1,766 (84.1%)

13 (0.6%)

RNA Transcription

2,675

6,512 (avg. 2.4)

2,224 (83.1%)

34 (1.3%)

Run-Length Encoding

2,038

4,962 (avg. 2.4)

1,570 (77.0%)

28 (1.4%)

Saddle Points

2,731

4,400 (avg. 1.6)

1,842 (67.4%)

309 (11.3%)

Say

1,643

3,582 (avg. 2.2)

1,075 (65.4%)

12 (0.7%)

Scrabble Score

2,024

3,550 (avg. 1.8)

1,729 (85.4%)

23 (1.1%)

Sieve

2,211

4,711 (avg. 2.1)

1,836 (83.0%)

28 (1.3%)

Simple Linked List

3,507

16,942 (avg. 4.8)

2,277 (64.9%)

111 (3.2%)

Spiral Matrix

1,050

2,301 (avg. 2.2)

691 (65.8%)

8 (0.8%)

Tournament

2,388

15,351 (avg. 6.4)

1,727 (72.3%)

63 (2.6%)

Triangle

2,022

4,363 (avg. 2.2)

1,674 (82.8%)

23 (1.1%)

Two Bucket

999

1,553 (avg. 1.6)

521 (52.2%)

11 (1.1%)

Variable Length Quantity

1,006

2,179 (avg. 2.2)

651 (64.7%)

6 (0.6%)

Robot Simulator

2,755

10,550 (avg. 3.8)

2,282 (82.8%)

40 (1.5%)

Robot Name

1,202

4,219 (avg. 3.5)

829 (69.0%)

29 (2.4%)

Protein Translation

1,130

3,379 (avg. 3.0)

782 (69.2%)

9 (0.8%)

OCR Numbers

875

2,467 (avg. 2.8)

499 (57.0%)

9 (1.0%)

React

1,308

3,413 (avg. 2.6)

433 (33.1%)

19 (1.5%)

Wordy

847

2,302 (avg. 2.7)

567 (66.9%)

7 (0.8%)

Custom Set

1,081

3,441 (avg. 3.2)

721 (66.7%)

12 (1.1%)

Circular Buffer

1,263

3,828 (avg. 3.0)

776 (61.4%)

26 (2.1%)

Rectangles

980

3,731 (avg. 3.8)

499 (50.9%)

11 (1.1%)

Collatz Conjecture

2,702

8,719 (avg. 3.2)

2,213 (81.9%)

47 (1.7%)

Diffie-Hellman

2,402

8,000 (avg. 3.3)

1,650 (68.7%)

40 (1.7%)

Series

2,565

7,595 (avg. 3.0)

2,084 (81.2%)

36 (1.4%)

Accumulate

1,038

3,110 (avg. 3.0)

762 (73.4%)

27 (2.6%)

Affine Cipher

608

2,345 (avg. 3.9)

391 (64.3%)

5 (0.8%)

Atbash Cipher

1,996

5,218 (avg. 2.6)

1,521 (76.2%)

796 (39.9%)

Crypto Square

858

1,662 (avg. 1.9)

561 (65.4%)

5 (0.6%)

Diamond

676

1,851 (avg. 2.7)

449 (66.4%)

0 (0.0%)

Largest Series Product

1,096

2,734 (avg. 2.5)

860 (78.5%)

16 (1.5%)

Luhn From

996

1,872 (avg. 1.9)

730 (73.3%)

8 (0.8%)

Luhn Trait

856

1,072 (avg. 1.3)

630 (73.6%)

3 (0.4%)

Phone Number

929

2,298 (avg. 2.5)

701 (75.5%)

18 (1.9%)

Rail Fence Cipher

632

1,570 (avg. 2.5)

379 (60.0%)

4 (0.6%)

Roman Numerals

1,069

2,205 (avg. 2.1)

804 (75.2%)

5 (0.5%)

Rotational Cipher

952

1,746 (avg. 1.8)

730 (76.7%)

12 (1.3%)

Simple Cipher

758

2,279 (avg. 3.0)

472 (62.3%)

5 (0.7%)

Word Count

1,681

4,611 (avg. 2.7)

1,384 (82.3%)

40 (2.4%)

Fizzy

812

3,432 (avg. 4.2)

410 (50.5%)

7 (0.9%)

Pythagorean Triplet

3,686

6,214 (avg. 1.7)

1,948 (52.8%)

1,315 (35.7%)

Xorcism

685

2,876 (avg. 4.2)

230 (33.6%)

16 (2.3%)

Book Store

551

1,201 (avg. 2.2)

254 (46.1%)

6 (1.1%)

Decimal

684

2,137 (avg. 3.1)

295 (43.1%)

3 (0.4%)

Grep

670

2,177 (avg. 3.2)

330 (49.3%)

7 (1.0%)

Scale Generator

1,072

4,193 (avg. 3.9)

462 (43.1%)

8 (0.7%)

Dominoes

688

1,757 (avg. 2.6)

342 (49.7%)

14 (2.0%)

Doubly Linked List

687

1,836 (avg. 2.7)

183 (26.6%)

13 (1.9%)

Secret Handshake

260

860 (avg. 3.3)

201 (77.3%)

9 (3.5%)

Knapsack

103

430 (avg. 4.2)

62 (60.2%)

1 (1.0%)

Kindergarten Garden

313

1,796 (avg. 5.7)

224 (71.6%)

9 (2.9%)

Yacht

119

737 (avg. 6.2)

79 (66.4%)

3 (2.5%)

3 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Hexadecimal

120

184 (avg. 1.5)

114 (95.0%)

10 (8.3%)

Nucleotide Codons

133

157 (avg. 1.2)

129 (97.0%)

1 (0.8%)

Two Fer

28 (avg. 1.2)

4 (17.4%)

1 (4.3%)

40 unimplemented practice exercises

Bank Account

Binary Search Tree

Bottle Song

Change

Complex Numbers

Connect

D&D Character

Darts

Error Handling

Flatten Array

Food Chain

Go Counting

Hangman

House

Killer Sudoku Helper

Ledger

Lens Person

Linked List

List Ops

Markdown

Matrix

Meetup

Micro Blog

POV

REST API

Rational Numbers

Resistor Color

Resistor Color Duo

Resistor Color Trio

SGF Parsing

Satellite

Square Root

State of Tic-Tac-Toe

Strain

Transpose

Tree Building

Twelve Days

Word Search

Zebra Puzzle

Zipper

3 foregone practice exercises

Binary

View data

Octal

View data

Trinary

View data

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81,017 students have developed their Rust skills on Exercism.

The Rust track needs attention ⚠️

Build

Build Test Runners

Usage statistics

Build Analyzers

Usage statistics

Build Representers

Usage statistics

Create Practice Exercises

Usage statistics

We 💙 our volunteers

81,017
students have developed their Rust skills on Exercism.