Racket impact and status on Exercism

Racket

3,583 students

About Racket

Practice

57 contributors

90 mentors

Racket Track Management

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

Students

3,583

Submissions

30,924

Mentoring Discussions

670

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: a2036237930a12ffb5f71d693b2cce21ef0d5cdb (Updates should be instant)

Next goal: Implement 136 practice exercises. Find out more.

80 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

2,652

3,984 (avg. 1.5)

2,201 (83.0%)

3 (0.1%)

Acronym

422

1,176 (avg. 2.8)

185 (43.8%)

8 (1.9%)

Armstrong Numbers

265

722 (avg. 2.7)

191 (72.1%)

9 (3.4%)

Atbash Cipher

113

425 (avg. 3.8)

71 (62.8%)

5 (4.4%)

Binary Search

231 (avg. 3.3)

46 (65.7%)

5 (7.1%)

Bob

322

1,468 (avg. 4.6)

243 (75.5%)

28 (8.7%)

Clock

165 (avg. 2.9)

30 (53.6%)

2 (3.6%)

Collatz Conjecture

303

1,150 (avg. 3.8)

247 (81.5%)

27 (8.9%)

D&D Character

293 (avg. 3.5)

52 (61.9%)

1 (1.2%)

Darts

140 (avg. 2.2)

50 (76.9%)

3 (4.6%)

Difference of Squares

588

1,481 (avg. 2.5)

509 (86.6%)

56 (9.5%)

ETL

143

326 (avg. 2.3)

108 (75.5%)

5 (3.5%)

Eliud's Eggs

175 (avg. 2.1)

77 (90.6%)

0 (0.0%)

Gigasecond

337

530 (avg. 1.6)

284 (84.3%)

32 (9.5%)

Grains

1,265

3,953 (avg. 3.1)

771 (60.9%)

148 (11.7%)

Grep

105

280 (avg. 2.7)

61 (58.1%)

4 (3.8%)

Hamming

284

642 (avg. 2.3)

236 (83.1%)

24 (8.5%)

High Scores

56 (avg. 1.8)

18 (58.1%)

0 (0.0%)

Isogram

144

439 (avg. 3.0)

113 (78.5%)

6 (4.2%)

Leap

694

1,574 (avg. 2.3)

614 (88.5%)

76 (11.0%)

List Ops

146

477 (avg. 3.3)

89 (61.0%)

7 (4.8%)

Nth Prime

64 (avg. 4.3)

12 (80.0%)

1 (6.7%)

Nucleotide Count

139

345 (avg. 2.5)

115 (82.7%)

5 (3.6%)

Pangram

73 (avg. 2.1)

27 (79.4%)

0 (0.0%)

Protein Translation

71 (avg. 2.3)

21 (67.7%)

0 (0.0%)

Proverb

66 (avg. 2.6)

18 (72.0%)

1 (4.0%)

Queen Attack

41 (avg. 2.4)

12 (70.6%)

0 (0.0%)

RNA Transcription

162

237 (avg. 1.5)

144 (88.9%)

6 (3.7%)

Raindrops

145

353 (avg. 2.4)

125 (86.2%)

9 (6.2%)

Resistor Color

84 (avg. 2.6)

27 (84.4%)

2 (6.3%)

Resistor Color Duo

64 (avg. 2.5)

21 (80.8%)

1 (3.8%)

Resistor Color Trio

190 (avg. 6.8)

22 (78.6%)

2 (7.1%)

Reverse String

325

404 (avg. 1.2)

247 (76.0%)

4 (1.2%)

Roman Numerals

148

276 (avg. 1.9)

117 (79.1%)

6 (4.1%)

Scrabble Score

224

504 (avg. 2.3)

191 (85.3%)

22 (9.8%)

Sieve

60 (avg. 2.4)

19 (76.0%)

0 (0.0%)

Space Age

28 (avg. 1.0)

18 (66.7%)

0 (0.0%)

Square Root

55 (avg. 1.6)

22 (62.9%)

1 (2.9%)

Strain

44 (avg. 1.6)

20 (71.4%)

1 (3.6%)

Triangle

181 (avg. 3.7)

35 (71.4%)

0 (0.0%)

Two Fer

671

2,198 (avg. 3.3)

507 (75.6%)

97 (14.5%)

Affine Cipher

404 (avg. 4.4)

52 (57.1%)

3 (3.3%)

All Your Base

233

515 (avg. 2.2)

118 (50.6%)

3 (1.3%)

Allergies

141 (avg. 1.5)

74 (77.1%)

0 (0.0%)

Alphametics

241 (avg. 7.5)

9 (28.1%)

4 (12.5%)

Anagram

151

299 (avg. 2.0)

127 (84.1%)

10 (6.6%)

Circular Buffer

21 (avg. 1.0)

5 (23.8%)

0 (0.0%)

Diamond

21 (avg. 1.9)

5 (45.5%)

0 (0.0%)

Food Chain

69 (avg. 6.9)

4 (40.0%)

0 (0.0%)

Grade School

24 (avg. 1.8)

6 (46.2%)

0 (0.0%)

House

67 (avg. 2.6)

15 (57.7%)

0 (0.0%)

Kindergarten Garden

22 (avg. 2.2)

4 (40.0%)

1 (10.0%)

Knapsack

31 (avg. 2.1)

9 (60.0%)

1 (6.7%)

Largest Series Product

17 (avg. 1.4)

5 (41.7%)

1 (8.3%)

Matching Brackets

143

737 (avg. 5.2)

111 (77.6%)

2 (1.4%)

Meetup

166 (avg. 1.8)

49 (52.7%)

5 (5.4%)

Pascal's Triangle

29 (avg. 1.9)

8 (53.3%)

0 (0.0%)

Perfect Numbers

388

1,134 (avg. 2.9)

329 (84.8%)

40 (10.3%)

Phone Number

112

215 (avg. 1.9)

85 (75.9%)

1 (0.9%)

Pig Latin

10 (avg. 1.3)

3 (37.5%)

0 (0.0%)

Robot Name

171

474 (avg. 2.8)

108 (63.2%)

3 (1.8%)

Robot Simulator

17 (avg. 1.7)

4 (40.0%)

0 (0.0%)

Rotational Cipher

33 (avg. 1.7)

12 (60.0%)

0 (0.0%)

Run-Length Encoding

31 (avg. 3.1)

5 (50.0%)

0 (0.0%)

Say

160 (avg. 2.4)

42 (63.6%)

0 (0.0%)

Secret Handshake

7 (avg. 0.9)

4 (50.0%)

0 (0.0%)

Spiral Matrix

24 (avg. 2.4)

3 (30.0%)

0 (0.0%)

Sublist

89 (avg. 2.6)

19 (55.9%)

3 (8.8%)

Twelve Days

196 (avg. 3.7)

34 (64.2%)

2 (3.8%)

Two Bucket

27 (avg. 3.0)

4 (44.4%)

0 (0.0%)

Word Count

132

263 (avg. 2.0)

103 (78.0%)

4 (3.0%)

Yacht

40 (avg. 3.6)

5 (45.5%)

0 (0.0%)

Zebra Puzzle

15 (avg. 1.4)

3 (27.3%)

0 (0.0%)

Bank Account

35 (avg. 2.5)

3 (21.4%)

0 (0.0%)

Luhn

29 (avg. 1.8)

7 (43.8%)

0 (0.0%)

Minesweeper

28 (avg. 2.2)

4 (30.8%)

0 (0.0%)

Parallel Letter Frequency

75 (avg. 6.3)

6 (50.0%)

0 (0.0%)

Variable Length Quantity

171 (avg. 3.1)

23 (41.1%)

2 (3.6%)

Bowling

3 (avg. 0.8)

2 (50.0%)

0 (0.0%)

Pythagorean Triplet

13 (avg. 1.6)

4 (50.0%)

0 (0.0%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

6 (avg. 1.2)

3 (60.0%)

1 (20.0%)

56 unimplemented practice exercises

Baffling Birthdays

Binary Search Tree

Book Store

Bottle Song

Change

Complex Numbers

Connect

Conway's Game of Life

Crypto Square

Custom Set

Dominoes

DOT DSL

Error Handling

Flatten Array

Forth

Go Counting

Hangman

Intergalactic Transmission

ISBN Verifier

Killer Sudoku Helper

Ledger

Lens Person

Linked List

Markdown

Matrix

Micro Blog

OCR Numbers

PaaS I/O

Palindrome Products

Piecing It Together

Poker

POV

Prime Factors

Pythagorean Triplet

Rail Fence Cipher

Rational Numbers

React

Rectangles

Relative Distance

REST API

Saddle Points

Satellite

Series

SGF Parsing

Simple Cipher

Simple Linked List

Split-Second Stopwatch

State of Tic-Tac-Toe

Sum of Multiples

Swift Scheduling

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

Learn More

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

Current version: 9edc0750a47adab0e67b3919c64dcf60ab6a40bf (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

29,351

Test Run Pass Rate

39.3% (11533)

Test Run Fail Rate

57.7% (16936)

Test Run Error Rate

3.0% (882)

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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