Lua

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Exercises

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36 contributors

129 mentors

10,060
students have developed their Lua skills on Exercism.

Students

10,060

Submissions

72,998

Mentoring Discussions

1,366

The Lua track needs attention ⚠️

Building

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Use your knowledge to build the Lua track itself

36 contributors

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.

Usage statistics

Total Test Runner Runs

68,210

Test Run Pass Rate

20.8% (14178)

Test Run Fail Rate

51.7% (35271)

Test Run Error Rate

27.5% (18761)

Build Analyzers

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

Next goal: Build an Analyzer. Find out more.

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.

Next goal: Build a Representer. Find out more.

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 131 practice exercises. Find out more.

Usage statistics

82 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

7,207

23,903 (avg. 3.3)

4,632 (64.3%)

13 (0.2%)

Hamming

3,433

11,954 (avg. 3.5)

1,303 (38.0%)

343 (10.0%)

House

1,662

4,979 (avg. 3.0)

563 (33.9%)

148 (8.9%)

Difference of Squares

875

2,793 (avg. 3.2)

633 (72.3%)

88 (10.1%)

Binary Search

475

3,307 (avg. 7.0)

280 (58.9%)

65 (13.7%)

Matrix

448

1,931 (avg. 4.3)

209 (46.7%)

56 (12.5%)

Isogram

371

1,557 (avg. 4.2)

259 (69.8%)

43 (11.6%)

Bank Account

398

2,286 (avg. 5.7)

196 (49.2%)

34 (8.5%)

Nth Prime

186

797 (avg. 4.3)

113 (60.8%)

24 (12.9%)

Diamond

143

467 (avg. 3.3)

94 (65.7%)

21 (14.7%)

Run-Length Encoding

128

410 (avg. 3.2)

82 (64.1%)

20 (15.6%)

Robot Name

149

378 (avg. 2.5)

87 (58.4%)

19 (12.8%)

Leap

297

1,038 (avg. 3.5)

217 (73.1%)

18 (6.1%)

Custom Set

106

497 (avg. 4.7)

61 (57.5%)

11 (10.4%)

Pig Latin

256 (avg. 3.3)

39 (50.0%)

6 (7.7%)

List Ops

144 (avg. 1.7)

47 (56.6%)

8 (9.6%)

Binary

155

741 (avg. 4.8)

108 (69.7%)

5 (3.2%)

Allergies

155 (avg. 2.0)

44 (57.9%)

6 (7.9%)

Resistor Color Trio

246

724 (avg. 2.9)

172 (69.9%)

4 (1.6%)

Nucleotide Count

280

990 (avg. 3.5)

168 (60.0%)

30 (10.7%)

Protein Translation

143

433 (avg. 3.0)

103 (72.0%)

10 (7.0%)

RNA Transcription

179

350 (avg. 2.0)

137 (76.5%)

14 (7.8%)

Scrabble Score

181

600 (avg. 3.3)

119 (65.7%)

8 (4.4%)

Beer Song

180

727 (avg. 4.0)

121 (67.2%)

12 (6.7%)

Food Chain

104

269 (avg. 2.6)

67 (64.4%)

1 (1.0%)

Sum of Multiples

146

297 (avg. 2.0)

84 (57.5%)

5 (3.4%)

Collatz Conjecture

121

467 (avg. 3.9)

82 (67.8%)

2 (1.7%)

Perfect Numbers

140

280 (avg. 2.0)

109 (77.9%)

9 (6.4%)

Pythagorean Triplet

108

224 (avg. 2.1)

57 (52.8%)

4 (3.7%)

Triangle

129

406 (avg. 3.1)

82 (63.6%)

4 (3.1%)

Largest Series Product

114 (avg. 1.9)

36 (59.0%)

6 (9.8%)

Change

96 (avg. 1.4)

34 (50.7%)

1 (1.5%)

Binary Search Tree

91 (avg. 1.3)

33 (45.8%)

1 (1.4%)

Flatten Array

119

206 (avg. 1.7)

88 (73.9%)

16 (13.4%)

Matching Brackets

128

301 (avg. 2.4)

96 (75.0%)

16 (12.5%)

POV

77 (avg. 1.2)

16 (24.2%)

0 (0.0%)

Minesweeper

114 (avg. 2.1)

23 (41.8%)

6 (10.9%)

OCR Numbers

95 (avg. 2.2)

19 (43.2%)

4 (9.1%)

Transpose

99 (avg. 2.1)

18 (37.5%)

2 (4.2%)

Word Search

66 (avg. 1.1)

24 (39.3%)

3 (4.9%)

Alphametics

291 (avg. 4.5)

14 (21.5%)

2 (3.1%)

React

133 (avg. 1.8)

17 (22.7%)

1 (1.3%)

Rectangles

182 (avg. 3.4)

13 (24.5%)

2 (3.8%)

Pangram

131

339 (avg. 2.6)

95 (72.5%)

11 (8.4%)

Word Count

181

543 (avg. 3.0)

116 (64.1%)

23 (12.7%)

Acronym

141 (avg. 2.4)

31 (53.4%)

4 (6.9%)

Anagram

171

473 (avg. 2.8)

127 (74.3%)

43 (25.1%)

Clock

102

336 (avg. 3.3)

42 (41.2%)

11 (10.8%)

Grade School

180 (avg. 2.4)

50 (66.7%)

5 (6.7%)

Prime Factors

53 (avg. 1.2)

22 (47.8%)

3 (6.5%)

Sieve

79 (avg. 1.5)

27 (52.9%)

3 (5.9%)

Pascal's Triangle

100 (avg. 1.8)

33 (58.9%)

0 (0.0%)

Atbash Cipher

238 (avg. 3.8)

31 (50.0%)

4 (6.5%)

ISBN Verifier

151 (avg. 2.5)

29 (48.3%)

2 (3.3%)

Luhn

165 (avg. 2.6)

38 (60.3%)

2 (3.2%)

Crypto Square

201 (avg. 4.4)

23 (50.0%)

1 (2.2%)

Variable Length Quantity

105

229 (avg. 2.2)

61 (58.1%)

2 (1.9%)

Rail Fence Cipher

83 (avg. 1.9)

15 (34.9%)

0 (0.0%)

Robot Simulator

204 (avg. 2.4)

37 (44.0%)

3 (3.6%)

Raindrops

290

458 (avg. 1.6)

221 (76.2%)

31 (10.7%)

Gigasecond

76 (avg. 1.0)

44 (57.9%)

0 (0.0%)

Grains

172 (avg. 2.2)

51 (66.2%)

2 (2.6%)

Space Age

122 (avg. 1.6)

36 (47.4%)

5 (6.6%)

Bob

271

562 (avg. 2.1)

208 (76.8%)

31 (11.4%)

Secret Handshake

146 (avg. 3.0)

20 (40.8%)

1 (2.0%)

Roman Numerals

46 (avg. 0.9)

22 (44.0%)

2 (4.0%)

Rational Numbers

86 (avg. 2.6)

13 (39.4%)

1 (3.0%)

Circular Buffer

170 (avg. 3.2)

27 (50.9%)

7 (13.2%)

Linked List

208 (avg. 3.6)

28 (48.3%)

4 (6.9%)

Meetup

97 (avg. 2.6)

13 (35.1%)

1 (2.7%)

Say

86 (avg. 2.3)

11 (29.7%)

1 (2.7%)

ETL

102 (avg. 1.3)

57 (72.2%)

2 (2.5%)

Queen Attack

163 (avg. 2.7)

20 (32.8%)

2 (3.3%)

Reverse String

125

241 (avg. 1.9)

75 (60.0%)

2 (1.6%)

Series

140 (avg. 3.0)

24 (52.2%)

5 (10.9%)

Sublist

90 (avg. 1.8)

28 (56.0%)

3 (6.0%)

All Your Base

133 (avg. 2.8)

21 (44.7%)

2 (4.3%)

Octal

110

253 (avg. 2.3)

85 (77.3%)

16 (14.5%)

Phone Number

133

468 (avg. 3.5)

64 (48.1%)

6 (4.5%)

Bowling

61 (avg. 1.3)

12 (26.1%)

2 (4.3%)

Kindergarten Garden

111 (avg. 2.3)

24 (49.0%)

2 (4.1%)

Tournament

106 (avg. 1.7)

15 (24.6%)

1 (1.6%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

102

161 (avg. 1.6)

102 (100.0%)

33 (32.4%)

49 unimplemented practice exercises

Affine Cipher

Armstrong Numbers

Book Store

Bottle Song

Complex Numbers

Connect

D&D Character

DOT DSL

Darts

Dominoes

Error Handling

Forth

Go Counting

Grep

Hangman

High Scores

Killer Sudoku Helper

Knapsack

Ledger

Lens Person

Markdown

Micro Blog

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Poker

Proverb

REST API

Resistor Color

Resistor Color Duo

Rotational Cipher

SGF Parsing

Saddle Points

Satellite

Scale Generator

Simple Cipher

Simple Linked List

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Strain

Tree Building

Twelve Days

Two Bucket

Two-Fer

Wordy

Yacht

Zebra Puzzle

Zipper

Volunteers

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8,784

aarti

1,472

kytrinyx

888

+ 61 more

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Exercism relies on open-source volunteers to build our language tracks and mentor students.

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10,060 students have developed their Lua skills on Exercism.

The Lua track needs attention ⚠️

Build

Build Test Runners

Usage statistics

Build Analyzers

Build Representers

Create Practice Exercises

Usage statistics

We 💙 our volunteers

10,060
students have developed their Lua skills on Exercism.