Perl

2,588 students

44 contributors

2,588
students have developed their Perl skills on Exercism.

Students

2,588

Submissions

21,446

Mentoring Discussions

796

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

16,069

Test Run Pass Rate

27.4% (4410)

Test Run Fail Rate

59.1% (9493)

Test Run Error Rate

13.5% (2166)

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

1,335

1,955 (avg. 1.5)

1,025 (76.8%)

3 (0.2%)

Accumulate

455

2,821 (avg. 6.2)

204 (44.8%)

10 (2.2%)

All Your Base

151

1,421 (avg. 9.4)

58 (38.4%)

6 (4.0%)

Allergies

144

646 (avg. 4.5)

86 (59.7%)

4 (2.8%)

Anagram

202

907 (avg. 4.5)

169 (83.7%)

25 (12.4%)

Atbash Cipher

102

546 (avg. 5.4)

83 (81.4%)

4 (3.9%)

Binary Search

56

379 (avg. 6.8)

39 (69.6%)

1 (1.8%)

Binary Search Tree

44

114 (avg. 2.6)

21 (47.7%)

0 (0.0%)

Bob

615

1,146 (avg. 1.9)

491 (79.8%)

129 (21.0%)

Clock

120

399 (avg. 3.3)

85 (70.8%)

10 (8.3%)

Crypto Square

65

262 (avg. 4.0)

46 (70.8%)

1 (1.5%)

Custom Set

35

185 (avg. 5.3)

18 (51.4%)

0 (0.0%)

Difference of Squares

198

396 (avg. 2.0)

149 (75.3%)

24 (12.1%)

ETL

211

406 (avg. 1.9)

180 (85.3%)

26 (12.3%)

Food Chain

27

75 (avg. 2.8)

16 (59.3%)

0 (0.0%)

Gigasecond

61

193 (avg. 3.2)

45 (73.8%)

0 (0.0%)

Grade School

43

210 (avg. 4.9)

30 (69.8%)

2 (4.7%)

Grains

325

561 (avg. 1.7)

298 (91.7%)

68 (20.9%)

Hamming

263

460 (avg. 1.7)

242 (92.0%)

45 (17.1%)

House

51

165 (avg. 3.2)

37 (72.5%)

0 (0.0%)

Kindergarten Garden

40

156 (avg. 3.9)

30 (75.0%)

1 (2.5%)

Largest Series Product

46

216 (avg. 4.7)

34 (73.9%)

0 (0.0%)

Leap

409

612 (avg. 1.5)

384 (93.9%)

75 (18.3%)

Linked List

52

58 (avg. 1.1)

34 (65.4%)

0 (0.0%)

List Ops

45

97 (avg. 2.2)

33 (73.3%)

1 (2.2%)

Luhn

53

165 (avg. 3.1)

45 (84.9%)

0 (0.0%)

Matrix

43

159 (avg. 3.7)

32 (74.4%)

1 (2.3%)

Meetup

32

178 (avg. 5.6)

23 (71.9%)

0 (0.0%)

Minesweeper

23

69 (avg. 3.0)

14 (60.9%)

0 (0.0%)

Nucleotide Count

47

337 (avg. 7.2)

37 (78.7%)

0 (0.0%)

OCR Numbers

28

89 (avg. 3.2)

16 (57.1%)

1 (3.6%)

Palindrome Products

27

144 (avg. 5.3)

17 (63.0%)

1 (3.7%)

Pascal's Triangle

39

111 (avg. 2.8)

28 (71.8%)

0 (0.0%)

Phone Number

87

289 (avg. 3.3)

71 (81.6%)

3 (3.4%)

Pig Latin

39

89 (avg. 2.3)

31 (79.5%)

0 (0.0%)

Prime Factors

99

134 (avg. 1.4)

82 (82.8%)

8 (8.1%)

Proverb

144

172 (avg. 1.2)

117 (81.3%)

14 (9.7%)

Pythagorean Triplet

25

117 (avg. 4.7)

13 (52.0%)

1 (4.0%)

Queen Attack

33

82 (avg. 2.5)

23 (69.7%)

3 (9.1%)

Raindrops

280

475 (avg. 1.7)

262 (93.6%)

53 (18.9%)

RNA Transcription

77

188 (avg. 2.4)

69 (89.6%)

4 (5.2%)

Robot Name

80

198 (avg. 2.5)

63 (78.8%)

6 (7.5%)

Robot Simulator

26

71 (avg. 2.7)

13 (50.0%)

0 (0.0%)

Roman Numerals

112

143 (avg. 1.3)

92 (82.1%)

6 (5.4%)

Saddle Points

23

116 (avg. 5.0)

11 (47.8%)

0 (0.0%)

Say

30

58 (avg. 1.9)

18 (60.0%)

1 (3.3%)

Scrabble Score

168

292 (avg. 1.7)

149 (88.7%)

26 (15.5%)

Secret Handshake

35

116 (avg. 3.3)

26 (74.3%)

0 (0.0%)

Series

54

72 (avg. 1.3)

44 (81.5%)

1 (1.9%)

Sieve

32

78 (avg. 2.4)

24 (75.0%)

0 (0.0%)

Simple Cipher

51

107 (avg. 2.1)

36 (70.6%)

1 (2.0%)

Simple Linked List

25

48 (avg. 1.9)

12 (48.0%)

0 (0.0%)

Space Age

130

229 (avg. 1.8)

103 (79.2%)

10 (7.7%)

Strain

42

56 (avg. 1.3)

35 (83.3%)

0 (0.0%)

Sublist

25

89 (avg. 3.6)

16 (64.0%)

0 (0.0%)

Sum of Multiples

32

260 (avg. 8.1)

24 (75.0%)

0 (0.0%)

Triangle

98

270 (avg. 2.8)

83 (84.7%)

8 (8.2%)

Twelve Days

30

193 (avg. 6.4)

19 (63.3%)

0 (0.0%)

Two Fer

406

636 (avg. 1.6)

304 (74.9%)

186 (45.8%)

Word Count

183

380 (avg. 2.1)

154 (84.2%)

23 (12.6%)

Wordy

58

378 (avg. 6.5)

39 (67.2%)

2 (3.4%)

Bottle Song

7

58 (avg. 8.3)

6 (85.7%)

0 (0.0%)

5 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Beer Song

94

340 (avg. 3.6)

71 (75.5%)

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

94

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3,658

yanick

1,775

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1,396

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