Collatz in C in chars. 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 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 Hilbert Curve 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 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 Groovy 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 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 Groovy 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 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 Hilbert Curve 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 Chars Time 63rd ehulinsky 🇺🇸 821 78 16 Feb 2024 63rd Luca2812 821 78 4 Mar 2024 63rd 0xV0RT3X 821 78 4 Mar 2024 63rd emgordon154 821 78 25 Jul 2024 63rd BlankSpruce 821 78 20 Aug 2024 63rd madeforlosers 821 78 5 Sep 2024 63rd rniii 821 78 24 Sep 2024 63rd FragmentedCurve 821 78 3 Oct 2024 63rd cdesodt 821 78 10 Oct 2024 63rd LvLError 821 78 29 May 2025 63rd Lv0Sys 🇵🇱 821 78 30 May 2025 87th c0d3-4-F00d 🇩🇪 810 79 5 May 2022 87th jgbaldwinbrown 810 79 16 Jun 2022 87th jupj 🇫🇮 810 79 12 Aug 2022 87th tkr-sh 🇫🇷 810 79 20 Aug 2022 87th djeedjay 🇳🇱 810 79 15 Sep 2022 87th ValentinCassayre 810 79 8 Oct 2022 87th namcartoon06 810 79 30 Jun 2023 87th Us1ngTh3Hub 810 79 8 Jul 2023 87th Widgitty 810 79 30 Aug 2023 87th Grrisly 810 79 10 Nov 2023 87th trist224 🇫🇷 810 79 14 Feb 2024 87th mathisfun271 810 79 19 Feb 2024 87th retrohun 810 79 29 Mar 2024 87th HumanoidCPU 810 79 6 May 2024 87th funnyboy-roks 810 79 14 Jun 2024 87th bac0id 810 79 29 Jun 2024 87th csharpython 810 79 4 days ago 104th Seek64 🇩🇪 800 80 11 Nov 2022 104th tvcv901 800 80 22 Mar 2023 104th kyleclaassen 800 80 20 May 2023 104th logvp 800 80 1 Feb 2024 104th ei14 800 80 9 May 2024 104th elttil 800 80 8 Jun 2024 104th CaedenHarper 🇨🇦 800 80 26 Jan 2025 104th gastropner 800 80 25 days ago 112th MinorLegato 🇸🇪 790 81 9 May 2022 112th slerpyyy 🇩🇪 790 81 21 Oct 2022 112th violeta-desantis 790 81 22 Sep 2023 112th SebastianoTaddei 790 81 4 Oct 2024 116th Ripick 780 82 10 Nov 2022 116th pandapawskat 780 82 13 Jan 2023 116th annoj 780 82 18 Jan 2023 116th CatsAreFluffy 780 82 18 Feb 2023 116th nyoshe 780 82 9 Dec 2023 116th NickTheEASDude 🇺🇸 780 82 26 Jan 2024 116th LHLaurini 🇧🇷 780 82 26 Jun 2024 116th lgrandco 780 82 9 Oct 2024 124th Anonymousellama21 771 83 15 Jun 2022 124th cmayer777 771 83 15 Oct 2022 124th nstearns96 🇬🇧 771 83 16 Nov 2022 124th osmith93 771 83 13 Dec 2022 124th mhgockel 771 83 15 Apr 2023 124th funnsam 🇭🇰 771 83 25 Jul 2023 124th mousetail 🇳🇱 771 83 10 May 2024 131st guilhem-roy 🇫🇷 762 84 5 May 2022 131st resetcentral 762 84 22 May 2022 131st Adrien-AM 762 84 12 Sep 2022 131st ibrahimhanifceker 762 84 9 Aug 2024 131st James-Oswald 🇺🇸 762 84 23 Aug 2024 131st h-hh-hhh 🇺🇦 762 84 6 Nov 2024 137th ms-tingliang 753 85 5 Aug 2022 137th aubergine-sauce 753 85 26 May 2023 137th kallmi28 🇨🇿 753 85 13 Nov 2023 137th azka1368 753 85 23 Nov 2023 137th iilegacyyii 753 85 22 Jan 2024 137th f-tucker 753 85 6 Feb 2024 137th Stockoh 🇫🇷 753 85 29 Sep 2024 144th garrisonhh 744 86 22 Oct 2022 144th tpasfieldERAU 744 86 5 Nov 2022 144th isaiah0311 744 86 16 Feb 2023 144th piano-miles 744 86 30 Mar 2023 148th razetime 736 87 22 Aug 2022 149th james-downey 727 88 9 Jul 2022 149th jhpaques 🇫🇷 727 88 4 Dec 2022 Prev 76–150 of 223 Next