235,946
students have developed their JavaScript skills on Exercism.

Students
235,946
Submissions
4,410,082
Mentoring Discussions
37,662

The JavaScript track is healthy ✅

Building

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Use your knowledge to build the JavaScript track itself

Create the JavaScript 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 40 concepts. Find out more.

Usage statistics

32 concepts being taught
Ba
Basics
32,348 learnt
Bo
Booleans
17,865 learnt
Ar
Arithmetic Operators
17,697 learnt
Nu
Numbers
17,697 learnt
St
Strings
15,478 learnt
Ar
Arrays
12,536 learnt
Co
Comparison
11,667 learnt
Co
Conditionals
11,667 learnt
Fo
For Loops
10,207 learnt
In
Increment/Decrement
10,207 learnt
Sw
Switch Statement
8,373 learnt
Wh
While Loops
8,373 learnt
Ty
Type Conversion
6,279 learnt
Ar
Array Analysis
4,118 learnt
Ar
Arrow Functions
4,118 learnt
Ar
Array Destructuring
4,776 learnt
Re
Rest and Spread
4,776 learnt
Ar
Array Loops
3,602 learnt
Nu
Null and Undefined
7,111 learnt
Cl
Closures
4,368 learnt
Ca
Callbacks
4,529 learnt
Pr
Promises
1,752 learnt
Ob
Objects
7,813 learnt
Se
Sets
2,791 learnt
Fu
Functions
6,010 learnt
Er
Errors
3,397 learnt
In
Inheritance
3,397 learnt
Ar
Array Transformations
3,143 learnt
Te
Template Strings
5,034 learnt
Te
Ternary Operator
5,034 learnt
Pr
Prototypes & Classes
3,006 learnt
Re
Regular Expressions
445 learnt
24 active learning exercises
Started
Attempts
Completions
Mentoring requests
Lucian's Luscious Lasagna Lucian's Luscious Lasagna
59,686
308,628 (avg. 5.2)
32,348 (54.2%)
224 (0.4%)
Annalyn's Infiltration Annalyn's Infiltration
22,306
344,926 (avg. 15.5)
17,865 (80.1%)
192 (0.9%)
Freelancer Rates Freelancer Rates
22,808
289,000 (avg. 12.7)
17,697 (77.6%)
206 (0.9%)
Poetry Club Door Policy Poetry Club Door Policy
17,342
253,033 (avg. 14.6)
15,478 (89.3%)
110 (0.6%)
Elyses Enchantments Elyses Enchantments
13,437
189,544 (avg. 14.1)
12,536 (93.3%)
71 (0.5%)
Vehicle Purchase Vehicle Purchase
12,066
118,792 (avg. 9.8)
11,667 (96.7%)
110 (0.9%)
Bird Watcher Bird Watcher
11,003
162,373 (avg. 14.8)
10,207 (92.8%)
109 (1.0%)
Mixed Juices Mixed Juices
9,776
205,001 (avg. 21.0)
8,373 (85.6%)
128 (1.3%)
Lucky Numbers Lucky Numbers
6,603
120,184 (avg. 18.2)
6,279 (95.1%)
63 (1.0%)
Elyses Analytic Enchantments Elyses Analytic Enchantments
4,193
32,435 (avg. 7.7)
4,118 (98.2%)
25 (0.6%)
Elyses Destructured Enchantments Elyses Destructured Enchantments
4,907
54,209 (avg. 11.0)
4,776 (97.3%)
40 (0.8%)
Elyses Looping Enchantments Elyses Looping Enchantments
3,654
24,084 (avg. 6.6)
3,602 (98.6%)
25 (0.7%)
Amusement Park Amusement Park
7,437
120,588 (avg. 16.2)
7,111 (95.6%)
72 (1.0%)
Coordinate Transformation Coordinate Transformation
5,361
114,308 (avg. 21.3)
4,368 (81.5%)
126 (2.4%)
Fruit Picker Fruit Picker
5,072
71,217 (avg. 14.0)
4,529 (89.3%)
44 (0.9%)
Translation Service Translation Service
2,895
104,837 (avg. 36.2)
1,752 (60.5%)
58 (2.0%)
High Score Board High Score Board
8,282
128,689 (avg. 15.5)
7,813 (94.3%)
53 (0.6%)
Ozan's Playlist Ozan's Playlist
2,875
36,584 (avg. 12.7)
2,791 (97.1%)
24 (0.8%)
Lasagna Master Lasagna Master
6,329
117,420 (avg. 18.6)
6,010 (95.0%)
72 (1.1%)
Factory Sensors Factory Sensors
3,593
52,179 (avg. 14.5)
3,397 (94.5%)
31 (0.9%)
Elyses Transformative Enchantments Elyses Transformative Enchantments
3,333
74,542 (avg. 22.4)
3,143 (94.3%)
33 (1.0%)
Custom Signs Custom Signs
5,121
43,077 (avg. 8.4)
5,034 (98.3%)
16 (0.3%)
Windowing System Windowing System
3,522
81,385 (avg. 23.1)
3,006 (85.3%)
60 (1.7%)
Regular Chatbot Regular Chatbot
546
10,395 (avg. 19.0)
445 (81.5%)
6 (1.1%)
1 deprecated learning exercises
Started
Attempts
Completions
Mentoring requests
Employee Badges Employee Badges
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)

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
4,179,153
Test Run Pass Rate
12.7% (528810)
Test Run Fail Rate
72.5% (3031428)
Test Run Error Rate
14.8% (618915)

Build Analyzers

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

Usage statistics

Total Analyzer Runs
371,807
Total Analysis Comments Made
81,860
Feedback Given Frequency
1.4%

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.

Usage statistics

Total Representer Runs
371,790
Total Representation Comments Made
84,255
Feedback Given Frequency
22.7%

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

116 active practice exercises
Started
Attempts
Completions
Mentoring requests
Hello World Hello World
152,868
391,650 (avg. 2.6)
111,031 (72.6%)
108 (0.1%)
Two Fer Two Fer
25,011
39,443 (avg. 1.6)
18,688 (74.7%)
7,443 (29.8%)
Resistor Color Resistor Color
14,878
27,180 (avg. 1.8)
11,759 (79.0%)
3,410 (22.9%)
Resistor Color Duo Resistor Color Duo
11,034
27,886 (avg. 2.5)
8,572 (77.7%)
4,321 (39.2%)
Gigasecond Gigasecond
13,410
37,100 (avg. 2.8)
9,754 (72.7%)
2,528 (18.9%)
RNA Transcription RNA Transcription
13,241
27,591 (avg. 2.1)
11,517 (87.0%)
2,859 (21.6%)
Space Age Space Age
7,695
26,006 (avg. 3.4)
6,400 (83.2%)
1,654 (21.5%)
Pangram Pangram
8,222
23,797 (avg. 2.9)
6,937 (84.4%)
1,456 (17.7%)
Matrix Matrix
5,281
29,732 (avg. 5.6)
3,561 (67.4%)
932 (17.6%)
Bob Bob
9,858
44,632 (avg. 4.5)
7,963 (80.8%)
1,604 (16.3%)
Book Store Book Store
945
18,406 (avg. 19.5)
359 (38.0%)
31 (3.3%)
Pascal's Triangle Pascal's Triangle
3,315
11,598 (avg. 3.5)
2,302 (69.4%)
475 (14.3%)
Linked List Linked List
2,724
12,999 (avg. 4.8)
1,762 (64.7%)
372 (13.7%)
Grade School Grade School
2,900
13,382 (avg. 4.6)
2,167 (74.7%)
306 (10.6%)
List Ops List Ops
1,475
10,382 (avg. 7.0)
905 (61.4%)
191 (12.9%)
Robot Name Robot Name
2,340
9,715 (avg. 4.2)
1,631 (69.7%)
201 (8.6%)
Simple Cipher Simple Cipher
2,886
8,734 (avg. 3.0)
1,915 (66.4%)
380 (13.2%)
Wordy Wordy
1,258
8,975 (avg. 7.1)
838 (66.6%)
93 (7.4%)
Secret Handshake Secret Handshake
1,292
3,056 (avg. 2.4)
963 (74.5%)
83 (6.4%)
Leap Leap
17,487
31,552 (avg. 1.8)
14,153 (80.9%)
2,969 (17.0%)
Reverse String Reverse String
7,946
11,935 (avg. 1.5)
6,598 (83.0%)
257 (3.2%)
Collatz Conjecture Collatz Conjecture
4,454
14,190 (avg. 3.2)
3,456 (77.6%)
195 (4.4%)
Triangle Triangle
5,136
20,054 (avg. 3.9)
3,531 (68.8%)
289 (5.6%)
Clock Clock
2,453
9,029 (avg. 3.7)
1,534 (62.5%)
102 (4.2%)
Meetup Meetup
1,445
4,797 (avg. 3.3)
749 (51.8%)
34 (2.4%)
ETL ETL
2,991
8,979 (avg. 3.0)
2,433 (81.3%)
58 (1.9%)
Hamming Hamming
7,089
14,000 (avg. 2.0)
6,359 (89.7%)
362 (5.1%)
Raindrops Raindrops
3,564
14,438 (avg. 4.1)
2,949 (82.7%)
83 (2.3%)
Nucleotide Count Nucleotide Count
1,640
4,458 (avg. 2.7)
1,344 (82.0%)
88 (5.4%)
Scrabble Score Scrabble Score
4,287
18,028 (avg. 4.2)
2,547 (59.4%)
104 (2.4%)
Allergies Allergies
2,784
12,073 (avg. 4.3)
1,310 (47.1%)
46 (1.7%)
Word Count Word Count
7,337
43,006 (avg. 5.9)
4,203 (57.3%)
497 (6.8%)
Bank Account Bank Account
4,097
28,245 (avg. 6.9)
1,583 (38.6%)
48 (1.2%)
Difference of Squares Difference of Squares
1,651
5,239 (avg. 3.2)
1,364 (82.6%)
23 (1.4%)
Perfect Numbers Perfect Numbers
2,435
10,522 (avg. 4.3)
1,751 (71.9%)
47 (1.9%)
Complex Numbers Complex Numbers
611
2,378 (avg. 3.9)
401 (65.6%)
5 (0.8%)
Luhn Luhn
1,547
11,101 (avg. 7.2)
1,070 (69.2%)
37 (2.4%)
Prime Factors Prime Factors
1,806
4,459 (avg. 2.5)
1,491 (82.6%)
74 (4.1%)
Grains Grains
1,747
7,467 (avg. 4.3)
1,332 (76.2%)
49 (2.8%)
Pythagorean Triplet Pythagorean Triplet
1,015
3,506 (avg. 3.5)
596 (58.7%)
17 (1.7%)
Palindrome Products Palindrome Products
935
5,826 (avg. 6.2)
444 (47.5%)
15 (1.6%)
Anagram Anagram
3,515
13,251 (avg. 3.8)
2,994 (85.2%)
226 (6.4%)
Acronym Acronym
1,811
9,654 (avg. 5.3)
1,486 (82.1%)
33 (1.8%)
High Scores High Scores
1,441
5,660 (avg. 3.9)
1,071 (74.3%)
21 (1.5%)
Isogram Isogram
2,947
10,909 (avg. 3.7)
2,405 (81.6%)
61 (2.1%)
Matching Brackets Matching Brackets
2,128
13,645 (avg. 6.4)
1,096 (51.5%)
32 (1.5%)
Phone Number Phone Number
2,749
18,418 (avg. 6.7)
2,195 (79.8%)
77 (2.8%)
Scale Generator Scale Generator
1,911
4,720 (avg. 2.5)
363 (19.0%)
10 (0.5%)
Series Series
1,605
8,556 (avg. 5.3)
1,048 (65.3%)
21 (1.3%)
Largest Series Product Largest Series Product
1,030
5,552 (avg. 5.4)
636 (61.7%)
7 (0.7%)
Transpose Transpose
1,750
15,923 (avg. 9.1)
671 (38.3%)
15 (0.9%)
Grep Grep
346
1,790 (avg. 5.2)
118 (34.1%)
7 (2.0%)
Rectangles Rectangles
727
2,729 (avg. 3.8)
201 (27.6%)
6 (0.8%)
Spiral Matrix Spiral Matrix
547
1,818 (avg. 3.3)
292 (53.4%)
7 (1.3%)
OCR Numbers OCR Numbers
558
2,026 (avg. 3.6)
295 (52.9%)
5 (0.9%)
Saddle Points Saddle Points
635
2,257 (avg. 3.6)
406 (63.9%)
9 (1.4%)
Forth Forth
640
3,008 (avg. 4.7)
200 (31.3%)
10 (1.6%)
Food Chain Food Chain
1,499
3,233 (avg. 2.2)
1,182 (78.9%)
24 (1.6%)
House House
485
2,925 (avg. 6.0)
230 (47.4%)
2 (0.4%)
ISBN Verifier ISBN Verifier
655
2,727 (avg. 4.2)
429 (65.5%)
12 (1.8%)
Pig Latin Pig Latin
754
3,191 (avg. 4.2)
495 (65.6%)
7 (0.9%)
Proverb Proverb
420
2,153 (avg. 5.1)
308 (73.3%)
4 (1.0%)
Twelve Days Twelve Days
417
2,754 (avg. 6.6)
256 (61.4%)
2 (0.5%)
Promises Promises
451
4,287 (avg. 9.5)
101 (22.4%)
6 (1.3%)
Yacht Yacht
302
2,043 (avg. 6.8)
205 (67.9%)
7 (2.3%)
Beer Song Beer Song
2,091
4,546 (avg. 2.2)
1,827 (87.4%)
89 (4.3%)
Resistor Color Trio Resistor Color Trio
375
2,414 (avg. 6.4)
263 (70.1%)
7 (1.9%)
Dominoes Dominoes
202
1,072 (avg. 5.3)
77 (38.1%)
4 (2.0%)
Say Say
435
2,004 (avg. 4.6)
286 (65.7%)
0 (0.0%)
Diamond Diamond
472
2,053 (avg. 4.3)
288 (61.0%)
5 (1.1%)
Rational Numbers Rational Numbers
343
1,476 (avg. 4.3)
223 (65.0%)
2 (0.6%)
Sublist Sublist
526
1,951 (avg. 3.7)
365 (69.4%)
7 (1.3%)
Binary Search Tree Binary Search Tree
570
2,051 (avg. 3.6)
349 (61.2%)
8 (1.4%)
Custom Set Custom Set
460
2,080 (avg. 4.5)
300 (65.2%)
3 (0.7%)
Binary Search Binary Search
524
1,541 (avg. 2.9)
371 (70.8%)
6 (1.1%)
Circular Buffer Circular Buffer
660
1,637 (avg. 2.5)
481 (72.9%)
17 (2.6%)
Simple Linked List Simple Linked List
522
2,874 (avg. 5.5)
292 (55.9%)
5 (1.0%)
Word Search Word Search
463
2,856 (avg. 6.2)
147 (31.7%)
4 (0.9%)
Variable Length Quantity Variable Length Quantity
207
979 (avg. 4.7)
94 (45.4%)
1 (0.5%)
Two Bucket Two Bucket
324
927 (avg. 2.9)
157 (48.5%)
4 (1.2%)
Alphametics Alphametics
270
1,358 (avg. 5.0)
84 (31.1%)
4 (1.5%)
Connect Connect
199
604 (avg. 3.0)
86 (43.2%)
1 (0.5%)
Bowling Bowling
605
6,038 (avg. 10.0)
183 (30.2%)
4 (0.7%)
Strain Strain
780
1,229 (avg. 1.6)
582 (74.6%)
15 (1.9%)
Flatten Array Flatten Array
766
3,148 (avg. 4.1)
506 (66.1%)
13 (1.7%)
Nth Prime Nth Prime
607
1,790 (avg. 2.9)
404 (66.6%)
3 (0.5%)
Sieve Sieve
617
1,228 (avg. 2.0)
463 (75.0%)
5 (0.8%)
Rotational Cipher Rotational Cipher
1,049
6,400 (avg. 6.1)
648 (61.8%)
17 (1.6%)
Diffie-Hellman Diffie-Hellman
931
3,476 (avg. 3.7)
498 (53.5%)
6 (0.6%)
Affine Cipher Affine Cipher
165
1,449 (avg. 8.8)
87 (52.7%)
4 (2.4%)
Atbash Cipher Atbash Cipher
640
2,104 (avg. 3.3)
493 (77.0%)
10 (1.6%)
Crypto Square Crypto Square
670
2,133 (avg. 3.2)
441 (65.8%)
16 (2.4%)
Robot Simulator Robot Simulator
657
3,288 (avg. 5.0)
389 (59.2%)
10 (1.5%)
Kindergarten Garden Kindergarten Garden
371
789 (avg. 2.1)
277 (74.7%)
5 (1.3%)
Sum of Multiples Sum of Multiples
692
2,549 (avg. 3.7)
438 (63.3%)
11 (1.6%)
Change Change
618
4,092 (avg. 6.6)
150 (24.3%)
1 (0.2%)
Protein Translation Protein Translation
3,780
11,233 (avg. 3.0)
2,080 (55.0%)
333 (8.8%)
Armstrong Numbers Armstrong Numbers
3,037
7,570 (avg. 2.5)
2,215 (72.9%)
164 (5.4%)
D&D Character D&D Character
1,532
6,500 (avg. 4.2)
854 (55.7%)
65 (4.2%)
Run-Length Encoding Run-Length Encoding
2,802
7,766 (avg. 2.8)
1,502 (53.6%)
108 (3.9%)
Darts Darts
2,923
5,603 (avg. 1.9)
1,920 (65.7%)
83 (2.8%)
Roman Numerals Roman Numerals
2,762
6,300 (avg. 2.3)
1,612 (58.4%)
65 (2.4%)
Square Root Square Root
736
1,432 (avg. 1.9)
451 (61.3%)
11 (1.5%)
All Your Base All Your Base
1,158
2,698 (avg. 2.3)
552 (47.7%)
36 (3.1%)
Minesweeper Minesweeper
1,196
2,667 (avg. 2.2)
511 (42.7%)
47 (3.9%)
Queen Attack Queen Attack
1,224
3,761 (avg. 3.1)
656 (53.6%)
46 (3.8%)
React React
1,443
2,750 (avg. 1.9)
237 (16.4%)
16 (1.1%)
Zipper Zipper
1,104
1,207 (avg. 1.1)
210 (19.0%)
16 (1.4%)
Zebra Puzzle Zebra Puzzle
70
271 (avg. 3.9)
30 (42.9%)
0 (0.0%)
Tournament Tournament
324
4,949 (avg. 15.3)
142 (43.8%)
11 (3.4%)
Rail Fence Cipher Rail Fence Cipher
300
4,584 (avg. 15.3)
122 (40.7%)
7 (2.3%)
REST API REST API
103
1,321 (avg. 12.8)
55 (53.4%)
0 (0.0%)
Go Counting Go Counting
39
390 (avg. 10.0)
25 (64.1%)
3 (7.7%)
Knapsack Knapsack
104
994 (avg. 9.6)
46 (44.2%)
1 (1.0%)
Satellite Satellite
55
268 (avg. 4.9)
33 (60.0%)
0 (0.0%)
Poker Poker
123
2,242 (avg. 18.2)
35 (28.5%)
3 (2.4%)
100 deprecated practice exercises
Started
Attempts
Completions
Mentoring requests
Accumulate Accumulate
556
645 (avg. 1.2)
439 (79.0%)
11 (2.0%)
Accumulate (Legacy) Accumulate (Legacy)
10
12 (avg. 1.2)
10 (100.0%)
0 (0.0%)
Acronym (Legacy) Acronym (Legacy)
7
9 (avg. 1.3)
7 (100.0%)
0 (0.0%)
All Your Base (Legacy) All Your Base (Legacy)
2
2 (avg. 1.0)
2 (100.0%)
0 (0.0%)
Allergies (Legacy) Allergies (Legacy)
12
18 (avg. 1.5)
12 (100.0%)
0 (0.0%)
Alphametics (Legacy) Alphametics (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
Anagram (Legacy) Anagram (Legacy)
32
58 (avg. 1.8)
32 (100.0%)
6 (18.8%)
Armstrong Numbers (Legacy) Armstrong Numbers (Legacy)
3
3 (avg. 1.0)
3 (100.0%)
0 (0.0%)
Atbash Cipher (Legacy) Atbash Cipher (Legacy)
9
14 (avg. 1.6)
9 (100.0%)
1 (11.1%)
Beer Song (Legacy) Beer Song (Legacy)
31
39 (avg. 1.3)
31 (100.0%)
2 (6.5%)
Binary Binary
775
1,042 (avg. 1.3)
754 (97.3%)
38 (4.9%)
Binary (Legacy) Binary (Legacy)
15
20 (avg. 1.3)
15 (100.0%)
0 (0.0%)
Binary Search (Legacy) Binary Search (Legacy)
4
6 (avg. 1.5)
4 (100.0%)
0 (0.0%)
Binary Search Tree (Legacy) Binary Search Tree (Legacy)
4
5 (avg. 1.3)
4 (100.0%)
0 (0.0%)
Bob (Legacy) Bob (Legacy)
94
144 (avg. 1.5)
94 (100.0%)
16 (17.0%)
Bowling (Legacy) Bowling (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Bracket Push (Legacy) Bracket Push (Legacy)
6
6 (avg. 1.0)
6 (100.0%)
0 (0.0%)
Change (Legacy) Change (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Circular Buffer (Legacy) Circular Buffer (Legacy)
11
17 (avg. 1.5)
11 (100.0%)
2 (18.2%)
Clock (Legacy) Clock (Legacy)
14
23 (avg. 1.6)
14 (100.0%)
4 (28.6%)
Collatz Conjecture (Legacy) Collatz Conjecture (Legacy)
4
5 (avg. 1.3)
4 (100.0%)
0 (0.0%)
Connect (Legacy) Connect (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Crypto Square (Legacy) Crypto Square (Legacy)
8
9 (avg. 1.1)
8 (100.0%)
0 (0.0%)
Custom Set (Legacy) Custom Set (Legacy)
4
6 (avg. 1.5)
4 (100.0%)
0 (0.0%)
Diamond (Legacy) Diamond (Legacy)
3
3 (avg. 1.0)
3 (100.0%)
0 (0.0%)
Difference Of Squares (Legacy) Difference Of Squares (Legacy)
6
7 (avg. 1.2)
6 (100.0%)
1 (16.7%)
Diffie Hellman (Legacy) Diffie Hellman (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Etl (Legacy) Etl (Legacy)
23
29 (avg. 1.3)
23 (100.0%)
2 (8.7%)
Flatten Array (Legacy) Flatten Array (Legacy)
2
2 (avg. 1.0)
2 (100.0%)
0 (0.0%)
Food Chain (Legacy) Food Chain (Legacy)
18
27 (avg. 1.5)
18 (100.0%)
2 (11.1%)
Forth (Legacy) Forth (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
Gigasecond (Legacy) Gigasecond (Legacy)
64
81 (avg. 1.3)
64 (100.0%)
7 (10.9%)
Grade School (Legacy) Grade School (Legacy)
25
36 (avg. 1.4)
25 (100.0%)
4 (16.0%)
Grains (Legacy) Grains (Legacy)
17
23 (avg. 1.4)
17 (100.0%)
2 (11.8%)
Hamming (Legacy) Hamming (Legacy)
127
182 (avg. 1.4)
127 (100.0%)
9 (7.1%)
Hello World (Legacy) Hello World (Legacy)
506
584 (avg. 1.2)
506 (100.0%)
3 (0.6%)
Hexadecimal Hexadecimal
141
165 (avg. 1.2)
136 (96.5%)
2 (1.4%)
Hexadecimal (Legacy) Hexadecimal (Legacy)
3
3 (avg. 1.0)
3 (100.0%)
0 (0.0%)
Isbn Verifier (Legacy) Isbn Verifier (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Isogram (Legacy) Isogram (Legacy)
8
10 (avg. 1.3)
8 (100.0%)
0 (0.0%)
Kindergarten Garden (Legacy) Kindergarten Garden (Legacy)
4
7 (avg. 1.8)
4 (100.0%)
0 (0.0%)
Largest Series Product (Legacy) Largest Series Product (Legacy)
5
5 (avg. 1.0)
5 (100.0%)
0 (0.0%)
Leap (Legacy) Leap (Legacy)
307
434 (avg. 1.4)
307 (100.0%)
51 (16.6%)
Linked List (Legacy) Linked List (Legacy)
10
13 (avg. 1.3)
10 (100.0%)
0 (0.0%)
List Ops (Legacy) List Ops (Legacy)
3
3 (avg. 1.0)
3 (100.0%)
0 (0.0%)
Luhn (Legacy) Luhn (Legacy)
6
10 (avg. 1.7)
6 (100.0%)
2 (33.3%)
Matrix (Legacy) Matrix (Legacy)
8
9 (avg. 1.1)
8 (100.0%)
0 (0.0%)
Meetup (Legacy) Meetup (Legacy)
3
4 (avg. 1.3)
3 (100.0%)
0 (0.0%)
Minesweeper (Legacy) Minesweeper (Legacy)
3
2 (avg. 0.7)
3 (100.0%)
0 (0.0%)
Nth Prime (Legacy) Nth Prime (Legacy)
4
4 (avg. 1.0)
4 (100.0%)
0 (0.0%)
Nucleotide Count (Legacy) Nucleotide Count (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
Ocr Numbers (Legacy) Ocr Numbers (Legacy)
3
4 (avg. 1.3)
3 (100.0%)
0 (0.0%)
Octal Octal
192
214 (avg. 1.1)
188 (97.9%)
1 (0.5%)
Octal (Legacy) Octal (Legacy)
5
8 (avg. 1.6)
5 (100.0%)
0 (0.0%)
Palindrome Products (Legacy) Palindrome Products (Legacy)
4
8 (avg. 2.0)
4 (100.0%)
0 (0.0%)
Pangram (Legacy) Pangram (Legacy)
58
87 (avg. 1.5)
58 (100.0%)
7 (12.1%)
Pascals Triangle (Legacy) Pascals Triangle (Legacy)
7
8 (avg. 1.1)
7 (100.0%)
0 (0.0%)
Perfect Numbers (Legacy) Perfect Numbers (Legacy)
3
4 (avg. 1.3)
3 (100.0%)
0 (0.0%)
Phone Number (Legacy) Phone Number (Legacy)
31
41 (avg. 1.3)
31 (100.0%)
1 (3.2%)
Pig Latin (Legacy) Pig Latin (Legacy)
6
6 (avg. 1.0)
6 (100.0%)
0 (0.0%)
Point Mutations Point Mutations
66
94 (avg. 1.4)
64 (97.0%)
10 (15.2%)
Point Mutations (Legacy) Point Mutations (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
Prime Factors (Legacy) Prime Factors (Legacy)
13
17 (avg. 1.3)
13 (100.0%)
0 (0.0%)
Protein Translation (Legacy) Protein Translation (Legacy)
3
6 (avg. 2.0)
3 (100.0%)
0 (0.0%)
Proverb (Legacy) Proverb (Legacy)
1
2 (avg. 2.0)
1 (100.0%)
1 (100.0%)
Pythagorean Triplet (Legacy) Pythagorean Triplet (Legacy)
6
8 (avg. 1.3)
6 (100.0%)
0 (0.0%)
Queen Attack (Legacy) Queen Attack (Legacy)
5
7 (avg. 1.4)
5 (100.0%)
1 (20.0%)
Raindrops (Legacy) Raindrops (Legacy)
12
14 (avg. 1.2)
12 (100.0%)
1 (8.3%)
Rational Numbers (Legacy) Rational Numbers (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
Rectangles (Legacy) Rectangles (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
Reverse String (Legacy) Reverse String (Legacy)
14
20 (avg. 1.4)
14 (100.0%)
1 (7.1%)
Rna Transcription (Legacy) Rna Transcription (Legacy)
174
263 (avg. 1.5)
174 (100.0%)
24 (13.8%)
Robot Name (Legacy) Robot Name (Legacy)
23
40 (avg. 1.7)
23 (100.0%)
5 (21.7%)
Robot Simulator (Legacy) Robot Simulator (Legacy)
5
6 (avg. 1.2)
5 (100.0%)
0 (0.0%)
Roman Numerals (Legacy) Roman Numerals (Legacy)
16
27 (avg. 1.7)
16 (100.0%)
1 (6.3%)
Rotational Cipher (Legacy) Rotational Cipher (Legacy)
2
2 (avg. 1.0)
2 (100.0%)
0 (0.0%)
Run Length Encoding (Legacy) Run Length Encoding (Legacy)
7
3 (avg. 0.4)
7 (100.0%)
0 (0.0%)
Saddle Points (Legacy) Saddle Points (Legacy)
3
4 (avg. 1.3)
3 (100.0%)
0 (0.0%)
Say (Legacy) Say (Legacy)
3
3 (avg. 1.0)
3 (100.0%)
0 (0.0%)
Scrabble Score (Legacy) Scrabble Score (Legacy)
13
20 (avg. 1.5)
13 (100.0%)
1 (7.7%)
Secret Handshake (Legacy) Secret Handshake (Legacy)
10
12 (avg. 1.2)
10 (100.0%)
0 (0.0%)
Series (Legacy) Series (Legacy)
6
10 (avg. 1.7)
6 (100.0%)
2 (33.3%)
Sieve (Legacy) Sieve (Legacy)
9
12 (avg. 1.3)
9 (100.0%)
0 (0.0%)
Simple Cipher (Legacy) Simple Cipher (Legacy)
32
46 (avg. 1.4)
32 (100.0%)
5 (15.6%)
Simple Linked List (Legacy) Simple Linked List (Legacy)
2
2 (avg. 1.0)
2 (100.0%)
0 (0.0%)
Space Age (Legacy) Space Age (Legacy)
23
33 (avg. 1.4)
23 (100.0%)
3 (13.0%)
Strain (Legacy) Strain (Legacy)
9
11 (avg. 1.2)
9 (100.0%)
0 (0.0%)
Sublist (Legacy) Sublist (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Sum Of Multiples (Legacy) Sum Of Multiples (Legacy)
3
4 (avg. 1.3)
3 (100.0%)
1 (33.3%)
Transpose (Legacy) Transpose (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Triangle (Legacy) Triangle (Legacy)
19
34 (avg. 1.8)
19 (100.0%)
3 (15.8%)
Trinary Trinary
244
290 (avg. 1.2)
240 (98.4%)
2 (0.8%)
Trinary (Legacy) Trinary (Legacy)
5
6 (avg. 1.2)
5 (100.0%)
1 (20.0%)
Twelve Days (Legacy) Twelve Days (Legacy)
1
1 (avg. 1.0)
1 (100.0%)
0 (0.0%)
Two Bucket (Legacy) Two Bucket (Legacy)
4
4 (avg. 1.0)
4 (100.0%)
0 (0.0%)
Two Fer (Legacy) Two Fer (Legacy)
15
19 (avg. 1.3)
15 (100.0%)
2 (13.3%)
Variable Length Quantity (Legacy) Variable Length Quantity (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
Word Count (Legacy) Word Count (Legacy)
53
94 (avg. 1.8)
53 (100.0%)
13 (24.5%)
Wordy (Legacy) Wordy (Legacy)
8
8 (avg. 1.0)
8 (100.0%)
0 (0.0%)
Zipper (Legacy) Zipper (Legacy)
0
0 (avg. 0.0)
0 (0.0%)
0 (0.0%)
15 unimplemented practice exercises
Bottle Song Bottle Song
DOT DSL DOT DSL
Error Handling Error Handling
Hangman Hangman
Killer Sudoku Helper Killer Sudoku Helper
Ledger Ledger
Lens Person Lens Person
Markdown Markdown
Micro Blog Micro Blog
POV POV
PaaS I/O PaaS I/O
Parallel Letter Frequency Parallel Letter Frequency
SGF Parsing SGF Parsing
State of Tic-Tac-Toe State of Tic-Tac-Toe
Tree Building Tree Building