Gray Code Decoder in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 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) 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 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) 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 161st AlephSquirrel 843 76 39ms 3 Dec 2025 161st MeWhenI 🇻🇦 843 76 586ms 16 days ago 161st duckyluuk 🇳🇱 843 76 128ms 5 days ago 164th GolfingSuccess 🇬🇷 843 89 56ms 12 Jan 2026 165th ovs-code 🇩🇪 843 91 261ms 13 Dec 2025 165th error256 843 91 293ms 14 Jan 2026 165th GolfingSuccess 🇬🇷 843 91 272ms 14 Jan 2026 165th Natanaelel 🇸🇪 843 91 311ms 7 days ago 165th edsrzf 🇳🇿 843 91 546ms 10 hours ago 165th Steffan153 🇫🇮 843 91 285ms 10 hours ago 171st Natanaelel 🇸🇪 842 38 41ms 8 May 2025 171st ovs-code 🇩🇪 842 38 38ms 13 Jan 2026 171st Steffan153 🇫🇮 842 38 77ms 19 Feb 2026 171st pardouin 🇫🇷 842 38 37ms 19 Feb 2026 175th Steffan153 🇫🇮 842 62 56ms 10 hours ago 176th error256 842 98 155ms 16 Jan 2026 176th edsrzf 🇳🇿 842 98 157ms 6 days ago 178th madex 🇩🇪 840 67 9ms 5 days ago 179th GolfingSuccess 🇬🇷 840 69 447ms 14 Jan 2026 179th error256 840 69 410ms 9 days ago 179th Steffan153 🇫🇮 840 69 493ms 11 hours ago 182nd GolfingSuccess 🇬🇷 839 70 15ms 6 hours ago 183rd edsrzf 🇳🇿 837 48 1,062ms 7 days ago 184th DialFrost 🇸🇬 837 70 116ms 5 days ago 184th Steffan153 🇫🇮 837 70 2,152ms 10 hours ago 186th error256 836 80 466ms 16 Jan 2026 187th kg583 🇺🇸 835 86 23ms 2 Oct 2025 188th edsrzf 🇳🇿 835 94 6ms 6 days ago 188th albanian-laundromat 835 94 6ms 6 days ago 188th sean-niemann 🇺🇸 835 94 6ms 2 days ago 188th Steffan153 🇫🇮 835 94 6ms 10 hours ago 192nd edsrzf 🇳🇿 835 96 32ms 7 days ago 192nd Steffan153 🇫🇮 835 96 30ms 2 days ago 194th Yax42 🇫🇷 834 75 4ms 7 days ago 195th stefangimmillaro 834 99 150ms 28 hours ago 195th Steffan153 🇫🇮 834 99 157ms 7 hours ago 197th GolfingSuccess 🇬🇷 834 117 283ms 12 Jan 2026 197th Steffan153 🇫🇮 834 117 340ms 13 hours ago 199th edsrzf 🇳🇿 833 78 119ms 9 hours ago 199th Steffan153 🇫🇮 833 78 102ms 9 hours ago 201st lifthrasiir 🇰🇷 832 77 192ms 11 Dec 2024 201st Shanethegamer 🇺🇸 832 77 19ms 13 Dec 2024 201st emgordon154 832 77 161ms 9 May 2025 201st addmai 832 77 20ms 24 Jul 2025 201st hiichbindermax 832 77 17ms 17 Aug 2025 201st 5cw 🇺🇸 832 77 18ms 22 Aug 2025 201st davecame 832 77 135ms 25 Sep 2025 201st SirBogman 🇺🇸 832 77 232ms 13 Oct 2025 201st jtaxen 832 77 19ms 16 Oct 2025 201st albanian-laundromat 832 77 19ms 25 Nov 2025 201st anter69 🇭🇺 832 77 133ms 4 Feb 2026 201st Matter1024 🇮🇳 832 77 17ms 12 Feb 2026 201st KasperKivimaeki 🇫🇮 832 77 564ms 16 days ago 201st StefanHabel 🇨🇦 832 77 1,217ms 8 days ago 201st ahmetdemirag 🇨🇾 832 77 18ms 8 days ago 201st tomh1012 832 77 17ms 7 days ago 201st HumanoidCPU 832 77 230ms 7 days ago 201st qpwoeirut 832 77 19ms 7 days ago 201st btjones0 832 77 19ms 7 days ago 201st ComradeSquirrel 832 77 18ms 7 days ago 201st bzijlema 🇳🇱 832 77 18ms 7 days ago 201st Lv0Sys 🇵🇱 832 77 18ms 6 days ago 201st stefangimmillaro 832 77 136ms 3 days ago 201st LostSyntax21 🇬🇧 832 77 18ms 2 days ago 201st scpchicken 🇵🇼 832 77 18ms 7 hours ago 201st Andrey2001 832 77 18ms 49 mins ago 227th error256 830 55 2,813ms 15 Feb 2026 228th GolfingSuccess 🇬🇷 830 86 2,109ms 23 days ago 228th Steffan153 🇫🇮 830 86 2,054ms 10 hours ago 230th anter69 🇭🇺 829 47 1,210ms 4 Feb 2026 231st CaedenHarper 🇨🇦 829 56 12ms 7 days ago 231st MeWhenI 🇻🇦 829 56 12ms 6 days ago 231st madex 🇩🇪 829 56 13ms 5 days ago 231st edsrzf 🇳🇿 829 56 25ms 6 hours ago 235th edsrzf 🇳🇿 829 62 111ms 7 days ago 236th Steffan153 🇫🇮 829 68 487ms 10 hours ago 237th MeWhenI 🇻🇦 827 118 284ms 4 days ago 238th MeWhenI 🇻🇦 826 80 106ms 28 hours ago 239th edsrzf 🇳🇿 826 100 145ms 9 May 2025 240th ovs-code 🇩🇪 825 71 139ms 5 days ago First Prev 161–240 of 471 Next Last