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 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 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 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 Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 62nd Luca2812 833 78 4 Mar 2024 62nd 0xV0RT3X 833 78 4 Mar 2024 62nd dokutan 833 78 17 Mar 2024 62nd emgordon154 833 78 25 Jul 2024 62nd BlankSpruce 833 78 20 Aug 2024 62nd madeforlosers 833 78 5 Sep 2024 62nd rniii 833 78 24 Sep 2024 62nd FragmentedCurve 833 78 3 Oct 2024 62nd FortuiteMan 🇫🇷 833 78 10 Oct 2024 62nd Iznoanygod 🇺🇸 833 78 19 Dec 2024 62nd LvLError 833 78 29 May 2025 62nd Lv0Sys 🇵🇱 833 78 30 May 2025 88th c0d3-4-F00d 🇩🇪 823 79 5 May 2022 88th jgbaldwinbrown 823 79 16 Jun 2022 88th jupj 🇫🇮 823 79 12 Aug 2022 88th tkr-sh 🇫🇷 823 79 20 Aug 2022 88th djeedjay 🇳🇱 823 79 15 Sep 2022 88th ValentinCassayre 823 79 8 Oct 2022 88th namcartoon06 823 79 30 Jun 2023 88th Us1ngTh3Hub 823 79 8 Jul 2023 88th Widgitty 823 79 30 Aug 2023 88th Grrisly 823 79 10 Nov 2023 88th trist224 🇫🇷 823 79 14 Feb 2024 88th mathisfun271 823 79 19 Feb 2024 88th retrohun 823 79 29 Mar 2024 88th HumanoidCPU 823 79 6 May 2024 88th funnyboy-roks 823 79 14 Jun 2024 88th csharpython 823 79 5 Aug 2025 104th Seek64 🇩🇪 813 80 11 Nov 2022 104th tvcv901 813 80 22 Mar 2023 104th kyleclaassen 813 80 20 May 2023 104th logvp 813 80 1 Feb 2024 104th ei14 813 80 9 May 2024 104th elttil 813 80 8 Jun 2024 104th bac0id 813 80 29 Jun 2024 104th CaedenHarper 🇨🇦 813 80 26 Jan 2025 104th gastropner 813 80 14 Jul 2025 113th MinorLegato 🇸🇪 802 81 9 May 2022 113th slerpyyy 🇩🇪 802 81 21 Oct 2022 113th violeta-desantis 802 81 22 Sep 2023 113th SebastianoTaddei 802 81 4 Oct 2024 117th Ripick 793 82 10 Nov 2022 117th pandapawskat 793 82 13 Jan 2023 117th annoj 793 82 18 Jan 2023 117th CatsAreFluffy 793 82 18 Feb 2023 117th nyoshe 793 82 9 Dec 2023 117th NickTheEASDude 🇺🇸 793 82 26 Jan 2024 117th LHLaurini 🇧🇷 793 82 26 Jun 2024 117th lgrandco 793 82 9 Oct 2024 125th Anonymousellama21 783 83 15 Jun 2022 125th cmayer777 783 83 15 Oct 2022 125th nstearns96 🇬🇧 783 83 16 Nov 2022 125th osmith93 783 83 13 Dec 2022 125th mhgockel 783 83 15 Apr 2023 125th funnsam 🇭🇰 783 83 25 Jul 2023 125th mousetail 🇳🇱 783 83 10 May 2024 132nd guilhem-roy 🇫🇷 774 84 5 May 2022 132nd resetcentral 774 84 22 May 2022 132nd Adrien-AM 774 84 12 Sep 2022 132nd ibrahimhanifceker 774 84 9 Aug 2024 132nd James-Oswald 🇺🇸 774 84 23 Aug 2024 132nd h-hh-hhh 🇺🇦 774 84 6 Nov 2024 138th ms-tingliang 765 85 5 Aug 2022 138th aubergine-sauce 765 85 26 May 2023 138th kallmi28 🇨🇿 765 85 13 Nov 2023 138th azka1368 765 85 23 Nov 2023 138th iilegacyyii 765 85 22 Jan 2024 138th f-tucker 765 85 6 Feb 2024 138th Stockoh 🇫🇷 765 85 29 Sep 2024 145th garrisonhh 756 86 22 Oct 2022 145th tpasfieldERAU 756 86 5 Nov 2022 145th isaiah0311 756 86 16 Feb 2023 145th piano-miles 756 86 30 Mar 2023 149th razetime 747 87 22 Aug 2022 150th james-downey 739 88 9 Jul 2022 Prev 76–150 of 225 Next