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ALGOL 68
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BASIC
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brainfuck
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C#
C++
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Coconut
Common Lisp
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APL
Arturo
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BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
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12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Continued Fractions
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Gray Code Decoder
Gray Code Encoder
Happy Numbers
Happy Numbers (Long)
Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
Musical Chords
N Queens
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Taxicab Numbers
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Dragon Curve
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Hexagonal Spiral
Highly Composite Numbers
Huffman Encoder
NFA Simulator
Nim
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Collatz
vang1ong7ang
89
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22 days ago
Collatz
snoozingnewt
91
137ms
26 days ago
Collatz
madex
101
130ms
15 Mar 2026
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fantaize
91
133ms
10 Mar 2026
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130ms
13 Feb 2026
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91
131ms
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JohnSwiftC
111
134ms
31 Jan 2026
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102
131ms
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KatieLG
2,188
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ian-h-chamberlain
92
136ms
23 Nov 2025
Collatz
o800
104
125ms
17 Nov 2025
Collatz
luuumine
101
136ms
11 Nov 2025
Collatz
Mabeloid
102
130ms
31 Oct 2025
Collatz
kumavale
🥇
88
134ms
7 Oct 2025
Collatz
kmathis22
110
133ms
24 Sep 2025
Collatz
Arkadios200
105
130ms
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Collatz
CaedenHarper
3,246
116ms
16 Aug 2025
Collatz
addmai
118
131ms
25 Jul 2025
Collatz
ndren
104
127ms
14 Jul 2025
Collatz
henrydukepickle
97
132ms
8 Jul 2025
Collatz
unfinishedprogram
102
129ms
27 Jun 2025
Collatz
acotis
🥇
88
125ms
9 Jun 2025
Collatz
sean-niemann
92
135ms
8 Jun 2025
Collatz
LvLError
108
133ms
29 May 2025
Collatz
CosmicRaichu
110
131ms
25 Apr 2025
Collatz
DialFrost
91
130ms
7 Apr 2025
Collatz
TannerJ07
109
128ms
4 Apr 2025
Collatz
komunre
194
126ms
15 Mar 2025
Collatz
lolgeny
93
135ms
22 Feb 2025
Collatz
emgordon154
98
128ms
18 Feb 2025
Collatz
ComputerKWasTaken
110
131ms
20 Jan 2025
Collatz
nullie
93
134ms
19 Dec 2024
Collatz
edsrzf
91
124ms
29 Nov 2024
Collatz
avila-gabriel
116
140ms
17 Oct 2024
Collatz
FortuiteMan
108
124ms
10 Oct 2024
Collatz
dokutan
100
130ms
3 Oct 2024
Collatz
madeforlosers
108
124ms
5 Sep 2024
Collatz
asterized
110
132ms
24 Aug 2024
Collatz
trist224
93
125ms
12 Aug 2024
Collatz
smartiel
93
128ms
12 Aug 2024
Collatz
Florian-Mt
110
130ms
22 Jul 2024
Collatz
wuzekai518
106
124ms
8 Jul 2024
Collatz
lynn
91
128ms
6 Jul 2024
Collatz
inverseLorentz
92
129ms
27 May 2024
Collatz
HumanoidCPU
101
126ms
7 May 2024
Collatz
rucin93
105
129ms
2 May 2024
Collatz
gurglemurgle5
125
129ms
26 Apr 2024
Collatz
Alex-Huggett
109
129ms
14 Apr 2024
Collatz
77Tigers
104
126ms
9 Apr 2024
Collatz
TylerBloom
96
118ms
22 Mar 2024
Collatz
siltyy
103
127ms
20 Mar 2024
Collatz
TheMadRey
118
125ms
5 Mar 2024
Collatz
CarsonChr
119
135ms
14 Jan 2024
Collatz
mousetail
94
136ms
12 Jan 2024
Collatz
okaponta
102
129ms
11 Jan 2024
Collatz
logvp
93
127ms
2 Jan 2024
Collatz
drabart
112
131ms
15 Dec 2023
Collatz
stefangimmillaro
92
132ms
24 Oct 2023
Collatz
funnsam
130
134ms
23 Oct 2023
Collatz
lambda-abstraction
112
132ms
21 Oct 2023
Collatz
msbranicky
100
126ms
5 Oct 2023
Collatz
craftablescience
128
130ms
19 Sep 2023
Collatz
yamhab
103
126ms
14 Sep 2023
Collatz
StronkCheese
104
125ms
7 Sep 2023
Collatz
WatMan77
146
172ms
16 Aug 2023
Collatz
GoodDays13
133
125ms
12 Jul 2023
Collatz
AlexanderFair
103
135ms
5 Jul 2023
Collatz
undersquire
104
126ms
21 Jun 2023
Collatz
ovs-code
94
131ms
21 Jun 2023
Collatz
bogdan-cu
151
131ms
31 May 2023
Collatz
MeWhenI
101
123ms
29 May 2023
Collatz
StHagel
105
124ms
25 May 2023
Collatz
klixel
91
124ms
20 May 2023
Collatz
sona-tau
155
132ms
13 Apr 2023
Collatz
Z-snails
104
128ms
27 Feb 2023
Collatz
r-brinke
101
125ms
24 Feb 2023
Collatz
Betuaredead
110
130ms
5 Jan 2023
Collatz
retrohun
3,246
118ms
27 Dec 2022
Collatz
aDwarfNamedUrist
112
127ms
13 Dec 2022
Collatz
snobee
93
130ms
8 Dec 2022
Collatz
Super-Pizza
91
120ms
4 Dec 2022
Collatz
Starwort
102
126ms
11 Nov 2022
Collatz
Shanethegamer
98
129ms
26 Oct 2022
Collatz
andersk
91
133ms
25 Oct 2022
Collatz
datheia
299
136ms
23 Oct 2022
Collatz
nkoppel
94
128ms
19 Oct 2022
Collatz
JayXon
🥇
88
128ms
17 Oct 2022
Collatz
jhpaques
114
140ms
30 Jul 2022
Collatz
JGDoerrer
103
137ms
29 Jun 2022
Collatz
KatieLG-Transpiler
4,248
115ms
24 Jun 2022
Collatz
Natanaelel
94
129ms
17 Jun 2022
Collatz
TheSmilingTurtle
107
126ms
5 Jun 2022
Collatz
oliverjanka
183
126ms
2 Jun 2022
Collatz
hueblu
105
123ms
30 May 2022
Collatz
nipzu
94
128ms
17 May 2022
Collatz
oeb25
93
129ms
16 May 2022
Collatz
Lydxn
90
123ms
6 May 2022
Collatz
m-tkach
121
128ms
4 May 2022