Racket impact and status on Exercism

Racket

3,074 students

About Racket

Practice

51 contributors

79 mentors

Racket Track Management

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

Students

3,074

Submissions

24,614

Mentoring Discussions

623

The Racket track needs attention ⚠️

Building

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: 196a4d6e924caa3175429453f505294987e25971 (Updates should be instant)

Next goal: Implement 129 practice exercises. Find out more.

76 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

2,074

3,113 (avg. 1.5)

1,741 (83.9%)

3 (0.1%)

Grains

1,233

3,839 (avg. 3.1)

742 (60.2%)

148 (12.0%)

Two Fer

648

2,147 (avg. 3.3)

487 (75.2%)

97 (15.0%)

Leap

659

1,494 (avg. 2.3)

584 (88.6%)

75 (11.4%)

Difference of Squares

549

1,362 (avg. 2.5)

476 (86.7%)

54 (9.8%)

D&D Character

221 (avg. 4.4)

29 (58.0%)

1 (2.0%)

Perfect Numbers

380

1,098 (avg. 2.9)

320 (84.2%)

40 (10.5%)

Gigasecond

321

507 (avg. 1.6)

271 (84.4%)

32 (10.0%)

Bob

275

1,030 (avg. 3.7)

210 (76.4%)

27 (9.8%)

Collatz Conjecture

252

917 (avg. 3.6)

205 (81.3%)

26 (10.3%)

Hamming

269

616 (avg. 2.3)

221 (82.2%)

24 (8.9%)

Scrabble Score

208

437 (avg. 2.1)

177 (85.1%)

22 (10.6%)

Square Root

26 (avg. 1.5)

11 (64.7%)

0 (0.0%)

Twelve Days

193 (avg. 3.9)

33 (66.0%)

2 (4.0%)

Isogram

126

359 (avg. 2.8)

97 (77.0%)

5 (4.0%)

Robot Name

169

469 (avg. 2.8)

105 (62.1%)

3 (1.8%)

Armstrong Numbers

141

293 (avg. 2.1)

116 (82.3%)

2 (1.4%)

Affine Cipher

395 (avg. 4.5)

49 (56.3%)

3 (3.4%)

Acronym

122

246 (avg. 2.0)

95 (77.9%)

1 (0.8%)

All Your Base

221

469 (avg. 2.1)

110 (49.8%)

3 (1.4%)

Alphametics

235 (avg. 8.4)

8 (28.6%)

3 (10.7%)

Allergies

130 (avg. 1.5)

68 (78.2%)

0 (0.0%)

Anagram

142

287 (avg. 2.0)

119 (83.8%)

9 (6.3%)

Binary Search

66 (avg. 3.9)

14 (82.4%)

0 (0.0%)

Clock

40 (avg. 3.3)

8 (66.7%)

0 (0.0%)

ETL

128

260 (avg. 2.0)

97 (75.8%)

4 (3.1%)

Grep

231 (avg. 2.5)

55 (59.1%)

3 (3.2%)

High Scores

45 (avg. 3.5)

9 (69.2%)

0 (0.0%)

List Ops

124

357 (avg. 2.9)

78 (62.9%)

5 (4.0%)

Meetup

165 (avg. 1.8)

49 (53.8%)

5 (5.5%)

Nucleotide Count

128

283 (avg. 2.2)

104 (81.3%)

5 (3.9%)

Phone Number

107

210 (avg. 2.0)

84 (78.5%)

1 (0.9%)

Raindrops

130

290 (avg. 2.2)

110 (84.6%)

6 (4.6%)

Reverse String

309

364 (avg. 1.2)

229 (74.1%)

4 (1.3%)

RNA Transcription

147

198 (avg. 1.3)

130 (88.4%)

6 (4.1%)

Roman Numerals

139

257 (avg. 1.8)

109 (78.4%)

6 (4.3%)

Say

159 (avg. 2.4)

42 (63.6%)

0 (0.0%)

Triangle

86 (avg. 2.7)

25 (78.1%)

0 (0.0%)

Pangram

11 (avg. 1.0)

7 (63.6%)

0 (0.0%)

Eliud's Eggs

9 (avg. 0.8)

7 (58.3%)

0 (0.0%)

Protein Translation

46 (avg. 2.9)

10 (62.5%)

0 (0.0%)

Proverb

14 (avg. 1.6)

5 (55.6%)

0 (0.0%)

Word Count

130

260 (avg. 2.0)

102 (78.5%)

4 (3.1%)

Atbash Cipher

171 (avg. 3.1)

38 (67.9%)

0 (0.0%)

Variable Length Quantity

170 (avg. 3.2)

23 (43.4%)

2 (3.8%)

Matching Brackets

328 (avg. 4.3)

56 (72.7%)

0 (0.0%)

Sublist

54 (avg. 1.9)

17 (58.6%)

2 (6.9%)

House

66 (avg. 2.5)

14 (53.8%)

0 (0.0%)

Resistor Color Trio

83 (avg. 5.9)

9 (64.3%)

2 (14.3%)

Resistor Color

23 (avg. 1.6)

10 (71.4%)

1 (7.1%)

Rotational Cipher

15 (avg. 1.1)

8 (57.1%)

0 (0.0%)

Space Age

16 (avg. 0.9)

9 (52.9%)

0 (0.0%)

Strain

7 (avg. 0.7)

6 (60.0%)

0 (0.0%)

Darts

52 (avg. 1.6)

23 (71.9%)

2 (6.3%)

Resistor Color Duo

32 (avg. 2.3)

10 (71.4%)

1 (7.1%)

Zebra Puzzle

12 (avg. 2.0)

2 (33.3%)

0 (0.0%)

Sieve

9 (avg. 1.3)

4 (57.1%)

0 (0.0%)

Two Bucket

7 (avg. 1.4)

2 (40.0%)

0 (0.0%)

Run-Length Encoding

19 (avg. 3.8)

2 (40.0%)

0 (0.0%)

Yacht

2 (avg. 0.4)

2 (40.0%)

0 (0.0%)

Knapsack

12 (avg. 2.4)

2 (40.0%)

0 (0.0%)

Pig Latin

7 (avg. 1.4)

2 (40.0%)

0 (0.0%)

Largest Series Product

6 (avg. 0.8)

3 (37.5%)

0 (0.0%)

Luhn

21 (avg. 2.3)

4 (44.4%)

0 (0.0%)

Circular Buffer

17 (avg. 1.9)

3 (33.3%)

0 (0.0%)

Minesweeper

15 (avg. 2.1)

2 (28.6%)

0 (0.0%)

Spiral Matrix

20 (avg. 4.0)

2 (40.0%)

0 (0.0%)

Diamond

17 (avg. 3.4)

2 (40.0%)

0 (0.0%)

Food Chain

66 (avg. 13.2)

2 (40.0%)

0 (0.0%)

Robot Simulator

10 (avg. 2.0)

2 (40.0%)

0 (0.0%)

Parallel Letter Frequency

69 (avg. 8.6)

5 (62.5%)

0 (0.0%)

Pascal's Triangle

4 (avg. 0.7)

2 (33.3%)

0 (0.0%)

Bank Account

28 (avg. 4.7)

2 (33.3%)

0 (0.0%)

Grade School

6 (avg. 1.0)

2 (33.3%)

0 (0.0%)

Kindergarten Garden

7 (avg. 1.4)

2 (40.0%)

0 (0.0%)

Secret Handshake

3 (avg. 0.6)

2 (40.0%)

0 (0.0%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

6 (avg. 1.2)

3 (60.0%)

1 (20.0%)

53 unimplemented practice exercises

Binary Search Tree

Book Store

Bottle Song

Bowling

Change

Complex Numbers

Connect

Conway's Game of Life

Crypto Square

Custom Set

Dominoes

DOT DSL

Error Handling

Flatten Array

Forth

Go Counting

Hangman

ISBN Verifier

Killer Sudoku Helper

Ledger

Lens Person

Linked List

Markdown

Matrix

Micro Blog

Nth Prime

OCR Numbers

PaaS I/O

Palindrome Products

Poker

POV

Prime Factors

Pythagorean Triplet

Queen Attack

Rail Fence Cipher

Rational Numbers

React

Rectangles

REST API

Saddle Points

Satellite

Series

SGF Parsing

Simple Cipher

Simple Linked List

State of Tic-Tac-Toe

Sum of Multiples

Tournament

Transpose

Tree Building

Word Search

Wordy

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

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

Current version: 726bfe9259ce7f875e6f8e443b653b34ad6feaea (Takes up to 10 mins to deploy)

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

Total Test Runner Runs

23,074

Test Run Pass Rate

40.6% (9358)

Test Run Fail Rate

56.4% (13014)

Test Run Error Rate

3.0% (702)

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.

Next goal: Build a Representer. Find out more.

Analyzer

Learn More

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

Next goal: Build an Analyzer. Find out more.

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