Collatz in C in bytes. Cheevos Holes Recent Holes Langs Medals Misc All Holes 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Morse Decoder Morse Encoder 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) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Morse Decoder Morse Encoder 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) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 151st james-downey 739 88 9 Jul 2022 151st jhpaques 🇫🇷 739 88 4 Dec 2022 151st mamalakic 739 88 1 Mar 2023 151st xnacly 🇩🇪 739 88 5 Jul 2023 151st KrausRaus 🇺🇸 739 88 31 Jul 2023 151st dranjohn 739 88 17 Sep 2023 151st roguh 🇬🇹 739 88 15 Jan 2024 151st northsuperman 739 88 24 Mar 2024 159th RealAMC 🇳🇿 730 89 15 Nov 2023 159th mathb0y512 730 89 25 Jun 2024 159th Mabeloid 🇳🇴 730 89 25 Sep 2024 162nd Starwort 🇬🇧 722 90 11 Nov 2022 163rd astdefu 714 91 10 Dec 2022 163rd msbranicky 714 91 9 Jan 2024 165th MaxElf999 707 92 5 Feb 2023 165th ComputerKWasTaken 🇺🇸 707 92 20 Jan 2025 165th matejmatik123 🇸🇰 707 92 6 Jul 2025 168th LawrenceZ1A 🇨🇦 699 93 25 May 2022 168th jaxmattfair 🇺🇸 699 93 10 Jan 2023 168th Maximizer02 699 93 7 May 2024 168th BlueGummi 699 93 15 Apr 2025 168th 0dyse 699 93 23 Apr 2025 173rd Smetalo 691 94 25 Aug 2022 173rd kellantech 691 94 8 Aug 2023 173rd evan18c 691 94 12 Dec 2023 176th NeatCrown 🇨🇦 670 97 14 Dec 2022 177th calinous 🇷🇴 663 98 2 Mar 2023 177th jtaxen 663 98 14 Apr 2024 179th Azearia 650 100 6 Jul 2023 180th Sephirem98 637 102 25 Oct 2023 181st galloj 🇨🇿 631 103 20 May 2023 181st Pyro569 631 103 28 Jul 2023 183rd TornadoCookie 607 107 17 Oct 2022 183rd aarooosh 607 107 8 Aug 2024 185th dillon-duncando 602 108 22 Sep 2022 186th MasFlam 596 109 21 Jun 2024 187th tweska 🇳🇱 591 110 5 Jun 2023 187th Jaro32768 🇸🇰 591 110 8 Feb 2024 189th michztl01 586 111 1 Jun 2022 190th kenballus 580 112 13 Jul 2022 190th nandanjp 580 112 29 Mar 2023 190th CyberTapir 580 112 27 Aug 2024 193rd Giantnoodlemonster 575 113 14 Sep 2024 193rd kmathis22 575 113 19 days ago 195th pinguicula 570 114 6 Apr 2023 195th fkantelberg 570 114 15 Jul 2023 197th TerenceTux 565 115 22 May 2023 198th tik25 556 117 28 Mar 2024 199th 104210 542 120 29 Jul 2022 200th Qruintrox 537 121 25 Jun 2023 201st aDwarfNamedUrist 533 122 12 Jul 2023 201st Alex-Huggett 🇬🇧 533 122 14 Apr 2024 203rd cgjohannsen 528 123 12 Jun 2022 204th TotoAJ 520 125 15 Dec 2023 204th mrmena 🇦🇺 520 125 19 Mar 2024 206th StronkCheese 🇺🇸 516 126 18 Feb 2023 207th MEarley 504 129 19 Sep 2023 208th wearsunscreen 489 133 19 Oct 2023 209th 4ndyJ 🇬🇧 485 134 16 Dec 2022 209th programmeruser2 485 134 3 Mar 2023 211th AstroOrbis 471 138 10 Jul 2025 212th julianreece 468 139 29 Apr 2025 213th myclevorname 🇺🇸 448 145 20 Aug 2023 214th Bodo171 445 146 6 Dec 2022 215th jameswmccarty 439 148 24 Sep 2024 216th craftablescience 417 156 19 Sep 2023 217th NOS4A5I 411 158 30 Dec 2022 218th calum12345 396 164 27 Mar 2025 219th george1605 342 190 14 Feb 2023 220th kevinnaviapaiva 322 202 20 Feb 2025 221st taha-daneshmand 188 345 2 Oct 2024 222nd MaNafromSaar 169 384 14 Nov 2023 223rd somT-oss 150 432 26 Nov 2024 224th Haksell 🇦🇶 20 3,242 28 Feb 2023 225th KatieLG-Transpiler 🇬🇧 15 4,245 23 Jun 2022 Prev 151–225 of 226 Next