Lua

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Exercises

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36 contributors

130 mentors

10,380
students have developed their Lua skills on Exercism.

Students

10,380

Submissions

76,405

Mentoring Discussions

1,375

The Lua track needs attention ⚠️

Building

Build

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

71,597

Test Run Pass Rate

20.5% (14670)

Test Run Fail Rate

51.3% (36718)

Test Run Error Rate

28.2% (20209)

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

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.

Next goal: Implement 131 practice exercises. Find out more.

Usage statistics

82 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

7,488

24,986 (avg. 3.3)

4,797 (64.1%)

13 (0.2%)

Hamming

3,549

12,510 (avg. 3.5)

1,343 (37.8%)

347 (9.8%)

House

1,724

5,186 (avg. 3.0)

578 (33.5%)

150 (8.7%)

Difference of Squares

909

2,907 (avg. 3.2)

662 (72.8%)

90 (9.9%)

Binary Search

490

3,539 (avg. 7.2)

289 (59.0%)

65 (13.3%)

Matrix

466

2,014 (avg. 4.3)

214 (45.9%)

56 (12.0%)

Isogram

389

1,609 (avg. 4.1)

270 (69.4%)

43 (11.1%)

Bank Account

416

2,419 (avg. 5.8)

201 (48.3%)

34 (8.2%)

Nth Prime

190

842 (avg. 4.4)

116 (61.1%)

24 (12.6%)

Diamond

145

481 (avg. 3.3)

95 (65.5%)

21 (14.5%)

Run-Length Encoding

131

447 (avg. 3.4)

85 (64.9%)

20 (15.3%)

Robot Name

152

379 (avg. 2.5)

88 (57.9%)

19 (12.5%)

Leap

305

1,054 (avg. 3.5)

222 (72.8%)

19 (6.2%)

Custom Set

107

498 (avg. 4.7)

62 (57.9%)

11 (10.3%)

Pig Latin

256 (avg. 3.3)

39 (50.0%)

6 (7.7%)

List Ops

149 (avg. 1.8)

48 (57.1%)

8 (9.5%)

Binary

167

829 (avg. 5.0)

115 (68.9%)

5 (3.0%)

Allergies

166 (avg. 2.1)

45 (57.7%)

6 (7.7%)

Resistor Color Trio

251

760 (avg. 3.0)

177 (70.5%)

4 (1.6%)

Nucleotide Count

285

1,054 (avg. 3.7)

172 (60.4%)

30 (10.5%)

Protein Translation

145

463 (avg. 3.2)

105 (72.4%)

10 (6.9%)

RNA Transcription

183

363 (avg. 2.0)

141 (77.0%)

14 (7.7%)

Scrabble Score

183

603 (avg. 3.3)

120 (65.6%)

8 (4.4%)

Beer Song

184

784 (avg. 4.3)

124 (67.4%)

12 (6.5%)

Food Chain

105

290 (avg. 2.8)

68 (64.8%)

1 (1.0%)

Sum of Multiples

150

314 (avg. 2.1)

85 (56.7%)

5 (3.3%)

Collatz Conjecture

125

488 (avg. 3.9)

84 (67.2%)

2 (1.6%)

Perfect Numbers

141

287 (avg. 2.0)

110 (78.0%)

9 (6.4%)

Pythagorean Triplet

111

253 (avg. 2.3)

59 (53.2%)

4 (3.6%)

Triangle

130

414 (avg. 3.2)

82 (63.1%)

4 (3.1%)

Largest Series Product

118 (avg. 1.8)

37 (57.8%)

6 (9.4%)

Change

110 (avg. 1.6)

35 (51.5%)

1 (1.5%)

Binary Search Tree

91 (avg. 1.3)

33 (45.8%)

1 (1.4%)

Flatten Array

121

217 (avg. 1.8)

90 (74.4%)

16 (13.2%)

Matching Brackets

129

303 (avg. 2.3)

97 (75.2%)

16 (12.4%)

POV

84 (avg. 1.3)

17 (25.4%)

0 (0.0%)

Minesweeper

130 (avg. 2.3)

24 (42.9%)

6 (10.7%)

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

94 (avg. 1.5)

24 (38.7%)

3 (4.8%)

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

134

342 (avg. 2.6)

98 (73.1%)

11 (8.2%)

Word Count

184

558 (avg. 3.0)

118 (64.1%)

23 (12.5%)

Acronym

145 (avg. 2.4)

33 (55.0%)

4 (6.7%)

Anagram

173

474 (avg. 2.7)

127 (73.4%)

43 (24.9%)

Clock

103

366 (avg. 3.6)

43 (41.7%)

11 (10.7%)

Grade School

195 (avg. 2.6)

50 (65.8%)

5 (6.6%)

Prime Factors

54 (avg. 1.1)

23 (48.9%)

3 (6.4%)

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

259 (avg. 4.0)

33 (51.6%)

4 (6.3%)

ISBN Verifier

151 (avg. 2.5)

30 (50.0%)

2 (3.3%)

Luhn

166 (avg. 2.6)

39 (60.9%)

2 (3.1%)

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

235 (avg. 2.6)

40 (44.9%)

3 (3.4%)

Raindrops

293

519 (avg. 1.8)

224 (76.5%)

31 (10.6%)

Gigasecond

77 (avg. 1.0)

45 (58.4%)

0 (0.0%)

Grains

181 (avg. 2.3)

53 (67.1%)

2 (2.5%)

Space Age

152 (avg. 1.9)

38 (48.7%)

5 (6.4%)

Bob

275

590 (avg. 2.1)

211 (76.7%)

31 (11.3%)

Secret Handshake

148 (avg. 2.9)

22 (43.1%)

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

103 (avg. 1.3)

58 (72.5%)

2 (2.5%)

Queen Attack

163 (avg. 2.7)

20 (32.8%)

2 (3.3%)

Reverse String

131

254 (avg. 1.9)

81 (61.8%)

2 (1.5%)

Series

142 (avg. 3.0)

24 (51.1%)

5 (10.6%)

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

113

259 (avg. 2.3)

88 (77.9%)

17 (15.0%)

Phone Number

136

502 (avg. 3.7)

65 (47.8%)

6 (4.4%)

Bowling

61 (avg. 1.3)

12 (26.1%)

2 (4.3%)

Kindergarten Garden

111 (avg. 2.3)

24 (49.0%)

2 (4.1%)

Tournament

138 (avg. 2.2)

15 (24.2%)

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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8,802

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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10,380 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

10,380
students have developed their Lua skills on Exercism.