Perl

2,737 students

44 contributors

2,737
students have developed their Perl skills on Exercism.

Students

2,737

Submissions

25,350

Mentoring Discussions

801

The Perl track needs attention ⚠️

Building

Build

Use your knowledge to build the Perl track itself

44 contributors

Build Test Runners

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

19,946

Test Run Pass Rate

26.2% (5222)

Test Run Fail Rate

57.9% (11553)

Test Run Error Rate

15.9% (3171)

Build Analyzers

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

Next goal: Build an Analyzer. Find out more.

Build Representers

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

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 129 practice exercises. Find out more.

Usage statistics

62 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

1,462

2,266 (avg. 1.5)

1,118 (76.5%)

3 (0.2%)

Accumulate

510

3,259 (avg. 6.4)

225 (44.1%)

10 (2.0%)

All Your Base

174

1,842 (avg. 10.6)

66 (37.9%)

7 (4.0%)

Allergies

159

904 (avg. 5.7)

97 (61.0%)

6 (3.8%)

Anagram

209

1,044 (avg. 5.0)

174 (83.3%)

25 (12.0%)

Atbash Cipher

108

662 (avg. 6.1)

88 (81.5%)

4 (3.7%)

Binary Search

63

502 (avg. 8.0)

44 (69.8%)

1 (1.6%)

Binary Search Tree

48

158 (avg. 3.3)

24 (50.0%)

0 (0.0%)

Bob

620

1,346 (avg. 2.2)

497 (80.2%)

130 (21.0%)

Clock

123

421 (avg. 3.4)

86 (69.9%)

10 (8.1%)

Crypto Square

67

263 (avg. 3.9)

47 (70.1%)

1 (1.5%)

Custom Set

37

220 (avg. 5.9)

20 (54.1%)

0 (0.0%)

Difference of Squares

201

406 (avg. 2.0)

152 (75.6%)

24 (11.9%)

ETL

212

446 (avg. 2.1)

183 (86.3%)

26 (12.3%)

Food Chain

28

75 (avg. 2.7)

16 (57.1%)

0 (0.0%)

Gigasecond

63

201 (avg. 3.2)

46 (73.0%)

0 (0.0%)

Grade School

44

210 (avg. 4.8)

30 (68.2%)

2 (4.5%)

Grains

329

634 (avg. 1.9)

301 (91.5%)

68 (20.7%)

Hamming

266

569 (avg. 2.1)

245 (92.1%)

45 (16.9%)

House

52

165 (avg. 3.2)

37 (71.2%)

0 (0.0%)

Kindergarten Garden

40

156 (avg. 3.9)

30 (75.0%)

1 (2.5%)

Largest Series Product

48

314 (avg. 6.5)

37 (77.1%)

0 (0.0%)

Leap

412

620 (avg. 1.5)

387 (93.9%)

75 (18.2%)

Linked List

54

65 (avg. 1.2)

36 (66.7%)

0 (0.0%)

List Ops

50

243 (avg. 4.9)

37 (74.0%)

2 (4.0%)

Luhn

55

214 (avg. 3.9)

47 (85.5%)

0 (0.0%)

Matrix

44

216 (avg. 4.9)

34 (77.3%)

1 (2.3%)

Meetup

33

194 (avg. 5.9)

24 (72.7%)

0 (0.0%)

Minesweeper

24

104 (avg. 4.3)

16 (66.7%)

0 (0.0%)

Nucleotide Count

49

369 (avg. 7.5)

39 (79.6%)

0 (0.0%)

OCR Numbers

29

90 (avg. 3.1)

17 (58.6%)

1 (3.4%)

Palindrome Products

31

231 (avg. 7.5)

19 (61.3%)

1 (3.2%)

Pascal's Triangle

40

233 (avg. 5.8)

30 (75.0%)

0 (0.0%)

Phone Number

89

316 (avg. 3.6)

73 (82.0%)

3 (3.4%)

Pig Latin

40

101 (avg. 2.5)

32 (80.0%)

0 (0.0%)

Prime Factors

103

168 (avg. 1.6)

84 (81.6%)

8 (7.8%)

Proverb

145

187 (avg. 1.3)

118 (81.4%)

14 (9.7%)

Pythagorean Triplet

27

121 (avg. 4.5)

14 (51.9%)

1 (3.7%)

Queen Attack

36

126 (avg. 3.5)

25 (69.4%)

3 (8.3%)

Raindrops

283

492 (avg. 1.7)

265 (93.6%)

53 (18.7%)

RNA Transcription

79

197 (avg. 2.5)

71 (89.9%)

4 (5.1%)

Robot Name

80

198 (avg. 2.5)

63 (78.8%)

6 (7.5%)

Robot Simulator

28

77 (avg. 2.8)

14 (50.0%)

0 (0.0%)

Roman Numerals

115

196 (avg. 1.7)

94 (81.7%)

6 (5.2%)

Saddle Points

24

117 (avg. 4.9)

11 (45.8%)

0 (0.0%)

Say

34

74 (avg. 2.2)

19 (55.9%)

1 (2.9%)

Scrabble Score

171

345 (avg. 2.0)

152 (88.9%)

26 (15.2%)

Secret Handshake

37

129 (avg. 3.5)

27 (73.0%)

0 (0.0%)

Series

56

134 (avg. 2.4)

46 (82.1%)

1 (1.8%)

Sieve

34

114 (avg. 3.4)

27 (79.4%)

0 (0.0%)

Simple Cipher

53

108 (avg. 2.0)

36 (67.9%)

1 (1.9%)

Simple Linked List

27

49 (avg. 1.8)

12 (44.4%)

0 (0.0%)

Space Age

135

281 (avg. 2.1)

106 (78.5%)

10 (7.4%)

Strain

44

61 (avg. 1.4)

37 (84.1%)

0 (0.0%)

Sublist

27

112 (avg. 4.1)

17 (63.0%)

0 (0.0%)

Sum of Multiples

35

366 (avg. 10.5)

26 (74.3%)

0 (0.0%)

Triangle

100

480 (avg. 4.8)

84 (84.0%)

9 (9.0%)

Twelve Days

31

217 (avg. 7.0)

20 (64.5%)

0 (0.0%)

Two Fer

411

653 (avg. 1.6)

307 (74.7%)

186 (45.3%)

Word Count

184

392 (avg. 2.1)

155 (84.2%)

23 (12.5%)

Wordy

59

401 (avg. 6.8)

40 (67.8%)

2 (3.4%)

Bottle Song

11

81 (avg. 7.4)

7 (63.6%)

0 (0.0%)

5 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Beer Song

94

341 (avg. 3.6)

72 (76.6%)

3 (3.2%)

Binary

5

5 (avg. 1.0)

5 (100.0%)

0 (0.0%)

Hexadecimal

21

29 (avg. 1.4)

18 (85.7%)

0 (0.0%)

Point Mutations

1

1 (avg. 1.0)

1 (100.0%)

0 (0.0%)

Trinary

39

39 (avg. 1.0)

33 (84.6%)

2 (5.1%)

67 unimplemented practice exercises

Acronym

Affine Cipher

Alphametics

Armstrong Numbers

Bank Account

Book Store

Bowling

Change

Circular Buffer

Collatz Conjecture

Complex Numbers

Connect

D&D Character

DOT DSL

Darts

Diamond

Dominoes

Error Handling

Flatten Array

Forth

Go Counting

Grep

Hangman

High Scores

ISBN Verifier

Isogram

Killer Sudoku Helper

Knapsack

Ledger

Lens Person

Markdown

Matching Brackets

Micro Blog

Nth Prime

POV

PaaS I/O

Pangram

Parallel Letter Frequency

Perfect Numbers

Poker

Protein Translation

REST API

Rail Fence Cipher

Rational Numbers

React

Rectangles

Resistor Color

Resistor Color Duo

Resistor Color Trio

Reverse String

Rotational Cipher

Run-Length Encoding

SGF Parsing

Satellite

Scale Generator

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Tournament

Transpose

Tree Building

Two Bucket

Variable Length Quantity

Word Search

Yacht

Zebra Puzzle

Zipper

Volunteers

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3,683

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1,775

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1,528

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