Clojure
Clojure
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Clojure Track Management

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

Students
17,683
Submissions
468,486
Mentoring Discussions
7,566

The Clojure track needs attention ⚠️

Building

Clojure syllabus

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Help create the track syllabus: is a set of concepts and learning exercises put together to teach foundational elements of the programming language.

Next goal: Create a complete syllabus with at least 20 concepts. Find out more.
12 concepts being taught
Ba
Basics
6,468 learnt
Ve
Vectors
2,916 learnt
Co
Conditionals
3,824 learnt
Nu
Numbers
3,824 learnt
Fl
Floating-point Numbers
1,595 learnt
Bo
Booleans
2,063 learnt
St
Strings
2,068 learnt
Se
Sequential Destructuring
1,064 learnt
Ch
Chars
494 learnt
At
Atoms
354 learnt
Cl
Closures
354 learnt
Li
Lists
406 learnt
10 active learning exercises
Started
Attempts
Completions
Mentoring requests
Lucian's Luscious Lasagna Lucian's Luscious Lasagna
7,355
24,930 (avg. 3.4)
6,468 (87.9%)
44 (0.6%)
Bird Watcher Bird Watcher
3,618
42,030 (avg. 11.6)
2,916 (80.6%)
131 (3.6%)
Cars, Assemble! Cars, Assemble!
4,286
33,603 (avg. 7.8)
3,824 (89.2%)
97 (2.3%)
Interest is Interesting Interest is Interesting
2,020
31,490 (avg. 15.6)
1,595 (79.0%)
50 (2.5%)
Annalyn's Infiltration Annalyn's Infiltration
2,259
14,982 (avg. 6.6)
2,063 (91.3%)
25 (1.1%)
Log Levels Log Levels
2,400
22,248 (avg. 9.3)
2,068 (86.2%)
46 (1.9%)
Elyses Destructured Enchantments Elyses Destructured Enchantments
1,154
13,432 (avg. 11.6)
1,064 (92.2%)
33 (2.9%)
Squeaky Clean Squeaky Clean
729
11,724 (avg. 16.1)
494 (67.8%)
22 (3.0%)
Coordinate Transformation Coordinate Transformation
519
4,870 (avg. 9.4)
354 (68.2%)
18 (3.5%)
Card Games Card Games
520
7,059 (avg. 13.6)
406 (78.1%)
20 (3.8%)
1 deprecated learning exercises
Started
Attempts
Completions
Mentoring requests
Tracks on Tracks on Tracks Tracks on Tracks on Tracks
3,685
37,071 (avg. 10.1)
3,155 (85.6%)
70 (1.9%)

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.

Synced primary repo: 6ba4b709bd0a21db99cf09f0ab2b3b1bf0cefce9 (Updates should be instant)

Next goal: Implement 133 practice exercises. Find out more.
95 active practice exercises
Started
Attempts
Completions
Mentoring requests
Hello World Hello World
13,899
21,897 (avg. 1.6)
12,170 (87.6%)
9 (0.1%)
Two Fer Two Fer
3,299
8,191 (avg. 2.5)
2,873 (87.1%)
952 (28.9%)
Armstrong Numbers Armstrong Numbers
3,879
15,908 (avg. 4.1)
2,479 (63.9%)
948 (24.4%)
Reverse String Reverse String
2,620
5,459 (avg. 2.1)
2,210 (84.4%)
692 (26.4%)
Acronym Acronym
867
7,124 (avg. 8.2)
716 (82.6%)
21 (2.4%)
All Your Base All Your Base
877
5,669 (avg. 6.5)
535 (61.0%)
31 (3.5%)
Anagram Anagram
1,870
5,851 (avg. 3.1)
1,727 (92.4%)
289 (15.5%)
Bob Bob
3,798
16,029 (avg. 4.2)
3,307 (87.1%)
947 (24.9%)
Collatz Conjecture Collatz Conjecture
1,509
4,585 (avg. 3.0)
1,277 (84.6%)
130 (8.6%)
Complex Numbers Complex Numbers
756
3,183 (avg. 4.2)
609 (80.6%)
23 (3.0%)
Eliud's Eggs Eliud's Eggs
68
146 (avg. 2.1)
57 (83.8%)
1 (1.5%)
ETL ETL
921
2,542 (avg. 2.8)
787 (85.5%)
36 (3.9%)
Hamming Hamming
1,372
3,542 (avg. 2.6)
1,262 (92.0%)
113 (8.2%)
Nth Prime Nth Prime
576
3,233 (avg. 5.6)
403 (70.0%)
12 (2.1%)
Nucleotide Count Nucleotide Count
1,362
3,950 (avg. 2.9)
1,194 (87.7%)
122 (9.0%)
Pangram Pangram
544
1,944 (avg. 3.6)
486 (89.3%)
16 (2.9%)
Pig Latin Pig Latin
403
2,717 (avg. 6.7)
270 (67.0%)
14 (3.5%)
Protein Translation Protein Translation
486
2,128 (avg. 4.4)
402 (82.7%)
19 (3.9%)
Raindrops Raindrops
839
3,031 (avg. 3.6)
760 (90.6%)
31 (3.7%)
RNA Transcription RNA Transcription
2,478
5,988 (avg. 2.4)
2,324 (93.8%)
579 (23.4%)
Robot Name Robot Name
945
4,582 (avg. 4.8)
787 (83.3%)
77 (8.1%)
Roman Numerals Roman Numerals
486
1,267 (avg. 2.6)
416 (85.6%)
15 (3.1%)
Rotational Cipher Rotational Cipher
319
1,268 (avg. 4.0)
254 (79.6%)
6 (1.9%)
Run-Length Encoding Run-Length Encoding
1,074
2,736 (avg. 2.5)
783 (72.9%)
307 (28.6%)
Scrabble Score Scrabble Score
516
1,234 (avg. 2.4)
468 (90.7%)
17 (3.3%)
Secret Handshake Secret Handshake
268
616 (avg. 2.3)
220 (82.1%)
4 (1.5%)
Series Series
791
1,557 (avg. 2.0)
641 (81.0%)
71 (9.0%)
Space Age Space Age
741
2,509 (avg. 3.4)
671 (90.6%)
24 (3.2%)
Strain Strain
393
886 (avg. 2.3)
340 (86.5%)
10 (2.5%)
Sublist Sublist
2,143
10,227 (avg. 4.8)
1,280 (59.7%)
79 (3.7%)
Sum of Multiples Sum of Multiples
376
959 (avg. 2.6)
316 (84.0%)
7 (1.9%)
High Scores High Scores
21
70 (avg. 3.3)
19 (90.5%)
1 (4.8%)
Triangle Triangle
753
3,575 (avg. 4.7)
685 (91.0%)
26 (3.5%)
Resistor Color Resistor Color
20
51 (avg. 2.6)
19 (95.0%)
0 (0.0%)
Word Count Word Count
1,738
3,776 (avg. 2.2)
1,625 (93.5%)
339 (19.5%)
Darts Darts
19
62 (avg. 3.3)
18 (94.7%)
1 (5.3%)
Atbash Cipher Atbash Cipher
368
1,214 (avg. 3.3)
317 (86.1%)
5 (1.4%)
Beer Song Beer Song
1,548
3,485 (avg. 2.3)
1,258 (81.3%)
158 (10.2%)
Binary Search Binary Search
601
2,307 (avg. 3.8)
473 (78.7%)
29 (4.8%)
Binary Search Tree Binary Search Tree
361
1,200 (avg. 3.3)
245 (67.9%)
4 (1.1%)
Change Change
254
1,052 (avg. 4.1)
139 (54.7%)
6 (2.4%)
Flatten Array Flatten Array
638
1,709 (avg. 2.7)
516 (80.9%)
14 (2.2%)
Gigasecond Gigasecond
451
1,163 (avg. 2.6)
367 (81.4%)
16 (3.5%)
Grade School Grade School
772
1,884 (avg. 2.4)
698 (90.4%)
57 (7.4%)
Grains Grains
505
1,554 (avg. 3.1)
447 (88.5%)
20 (4.0%)
ISBN Verifier ISBN Verifier
749
1,919 (avg. 2.6)
588 (78.5%)
212 (28.3%)
Isogram Isogram
347
1,010 (avg. 2.9)
289 (83.3%)
6 (1.7%)
Kindergarten Garden Kindergarten Garden
277
779 (avg. 2.8)
215 (77.6%)
6 (2.2%)
Leap Leap
1,862
6,598 (avg. 3.5)
1,691 (90.8%)
74 (4.0%)
Pascal's Triangle Pascal's Triangle
315
825 (avg. 2.6)
238 (75.6%)
5 (1.6%)
Perfect Numbers Perfect Numbers
409
850 (avg. 2.1)
353 (86.3%)
12 (2.9%)
Phone Number Phone Number
948
2,510 (avg. 2.6)
819 (86.4%)
82 (8.6%)
Prime Factors Prime Factors
350
894 (avg. 2.6)
289 (82.6%)
12 (3.4%)
Resistor Color Duo Resistor Color Duo
19
58 (avg. 3.1)
16 (84.2%)
0 (0.0%)
Proverb Proverb
196
528 (avg. 2.7)
145 (74.0%)
3 (1.5%)
Square Root Square Root
16
47 (avg. 2.9)
15 (93.8%)
0 (0.0%)
Say Say
603
2,662 (avg. 4.4)
348 (57.7%)
102 (16.9%)
Allergies Allergies
465
1,225 (avg. 2.6)
355 (76.3%)
9 (1.9%)
Crypto Square Crypto Square
329
1,517 (avg. 4.6)
233 (70.8%)
3 (0.9%)
Difference of Squares Difference of Squares
546
1,775 (avg. 3.3)
478 (87.5%)
7 (1.3%)
Dominoes Dominoes
197
628 (avg. 3.2)
98 (49.7%)
5 (2.5%)
Largest Series Product Largest Series Product
296
881 (avg. 3.0)
242 (81.8%)
6 (2.0%)
Matrix Matrix
15
39 (avg. 2.6)
12 (80.0%)
0 (0.0%)
Meetup Meetup
439
884 (avg. 2.0)
342 (77.9%)
20 (4.6%)
Simple Cipher Simple Cipher
15
111 (avg. 7.4)
12 (80.0%)
0 (0.0%)
D&D Character D&D Character
10
80 (avg. 8.0)
8 (80.0%)
0 (0.0%)
Twelve Days Twelve Days
8
71 (avg. 8.9)
4 (50.0%)
0 (0.0%)
Spiral Matrix Spiral Matrix
270
434 (avg. 1.6)
148 (54.8%)
7 (2.6%)
State of Tic-Tac-Toe State of Tic-Tac-Toe
11
63 (avg. 5.7)
7 (63.6%)
0 (0.0%)
Saddle Points Saddle Points
9
76 (avg. 8.4)
6 (66.7%)
0 (0.0%)
Clock Clock
587
1,098 (avg. 1.9)
428 (72.9%)
39 (6.6%)
Food Chain Food Chain
7
7 (avg. 1.0)
3 (42.9%)
0 (0.0%)
Resistor Color Trio Resistor Color Trio
9
54 (avg. 6.0)
7 (77.8%)
0 (0.0%)
List Ops List Ops
16
104 (avg. 6.5)
12 (75.0%)
0 (0.0%)
Diamond Diamond
181
483 (avg. 2.7)
119 (65.7%)
4 (2.2%)
Knapsack Knapsack
8
70 (avg. 8.8)
5 (62.5%)
0 (0.0%)
Luhn Luhn
306
832 (avg. 2.7)
232 (75.8%)
4 (1.3%)
Sieve Sieve
279
563 (avg. 2.0)
214 (76.7%)
12 (4.3%)
Pythagorean Triplet Pythagorean Triplet
13
52 (avg. 4.0)
7 (53.8%)
0 (0.0%)
Killer Sudoku Helper Killer Sudoku Helper
6
28 (avg. 4.7)
3 (50.0%)
0 (0.0%)
Robot Simulator Robot Simulator
974
6,037 (avg. 6.2)
580 (59.5%)
45 (4.6%)
Transpose Transpose
12
103 (avg. 8.6)
6 (50.0%)
0 (0.0%)
Conway's Game of Life Conway's Game of Life
9
31 (avg. 3.4)
4 (44.4%)
0 (0.0%)
Wordy Wordy
254
986 (avg. 3.9)
167 (65.7%)
7 (2.8%)
Bank Account Bank Account
436
1,035 (avg. 2.4)
333 (76.4%)
12 (2.8%)
Matching Brackets Matching Brackets
361
1,574 (avg. 4.4)
286 (79.2%)
13 (3.6%)
Minesweeper Minesweeper
211
599 (avg. 2.8)
134 (63.5%)
3 (1.4%)
Poker Poker
182
615 (avg. 3.4)
77 (42.3%)
8 (4.4%)
Queen Attack Queen Attack
284
807 (avg. 2.8)
214 (75.4%)
11 (3.9%)
Connect Connect
4
156 (avg. 39.0)
2 (50.0%)
0 (0.0%)
Zebra Puzzle Zebra Puzzle
9
5 (avg. 0.6)
2 (22.2%)
0 (0.0%)
Go Counting Go Counting
151
460 (avg. 3.0)
54 (35.8%)
5 (3.3%)
POV POV
227
378 (avg. 1.7)
95 (41.9%)
0 (0.0%)
Yacht Yacht
115
1,062 (avg. 9.2)
90 (78.3%)
3 (2.6%)
Zipper Zipper
51
149 (avg. 2.9)
26 (51.0%)
1 (2.0%)
5 deprecated practice exercises
Started
Attempts
Completions
Mentoring requests
Accumulate Accumulate
970
3,480 (avg. 3.6)
829 (85.5%)
26 (2.7%)
Binary Binary
441
1,157 (avg. 2.6)
387 (87.8%)
12 (2.7%)
Hexadecimal Hexadecimal
283
650 (avg. 2.3)
232 (82.0%)
8 (2.8%)
Octal Octal
374
1,245 (avg. 3.3)
314 (84.0%)
12 (3.2%)
Trinary Trinary
323
700 (avg. 2.2)
280 (86.7%)
11 (3.4%)
38 unimplemented practice exercises
Affine Cipher Affine Cipher
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Alphametics Alphametics
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Baffling Birthdays Baffling Birthdays
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Book Store Book Store
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Bottle Song Bottle Song
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Bowling Bowling
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Circular Buffer Circular Buffer
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Custom Set Custom Set
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DOT DSL DOT DSL
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Error Handling Error Handling
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Forth Forth
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Grep Grep
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Hangman Hangman
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House House
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Ledger Ledger
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Lens Person Lens Person
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Linked List Linked List
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Markdown Markdown
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Micro Blog Micro Blog
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OCR Numbers OCR Numbers
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PaaS I/O PaaS I/O
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Palindrome Products Palindrome Products
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Parallel Letter Frequency Parallel Letter Frequency
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Rail Fence Cipher Rail Fence Cipher
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Rational Numbers Rational Numbers
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React React
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Rectangles Rectangles
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Relative Distance Relative Distance
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REST API REST API
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Satellite Satellite
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SGF Parsing SGF Parsing
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Simple Linked List Simple Linked List
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Swift Scheduling Swift Scheduling
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Tournament Tournament
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Tree Building Tree Building
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Two Bucket Two Bucket
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Variable Length Quantity Variable Length Quantity
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Word Search Word Search
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Programming Tags

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Help manage the tags used to group, filter and recommend solutions, approaches and articles.

0 tags
Tag
Enabled
Filterable
Num Solutions

Test Runner

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

Current version: 33d0f8d3ae29f3ddd682546cc7721b69fe6b7166 (Takes up to 10 mins to deploy)

Total Test Runner Runs
432,803
Test Run Pass Rate
22.2% (95903)
Test Run Fail Rate
59.3% (256773)
Test Run Error Rate
18.5% (80127)

Representer

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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.

Current version: 7d314c84d7d61367ec621db7a38b681e26e06832 (Takes up to 10 mins to deploy)

Total Representer Runs
102,723
Total Representation Comments Made
12,147
Feedback Given Frequency
11.8%

Analyzer

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

Next goal: Build an Analyzer. Find out more.