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 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 Minesweeper 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 Calendar 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 Minesweeper 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 80th GolfingSuccess 🇬🇷 0 65 92ms 7 hours ago 82nd Yax42 🇫🇷 0 66 402ms 6 days ago 82nd AdrienHache 🇫🇷 0 66 414ms 6 days ago 82nd GolfingSuccess 🇬🇷 0 66 10ms 8 hours ago 82nd error256 0 66 84ms 4 hours ago 86th Shanethegamer 🇺🇸 0 67 92ms 7 May 2025 86th Shanethegamer 🇺🇸 0 67 377ms 7 May 2025 86th emgordon154 0 67 466ms 9 May 2025 86th namelessiw 0 67 399ms 2 Nov 2025 90th lifthrasiir 🇰🇷 0 68 549ms 11 Dec 2024 90th Shanethegamer 🇺🇸 0 68 264ms 13 Dec 2024 92nd khvdm 0 69 142ms 13 Jan 2025 92nd 4atj 0 69 1,142ms 21 May 2025 92nd albanian-laundromat 0 69 529ms 6 Dec 2025 95th btnlq 0 70 204ms 4 Dec 2024 95th kg583 🇺🇸 0 70 169ms 3 Oct 2025 97th GolfingSuccess 🇬🇷 0 71 3ms 9 hours ago 97th GolfingSuccess 🇬🇷 0 71 25ms 8 hours ago 99th edsrzf 🇳🇿 0 72 572ms 9 May 2025 99th dokutan 0 72 389ms 15 Aug 2025 99th kg583 🇺🇸 0 72 18ms 2 Oct 2025 99th error256 0 72 20ms 4 hours ago 103rd IISResetMe 0 73 326ms 2 days ago 104th rhdqor213 0 74 3ms 11 May 2025 104th saito-ta 🇯🇵 0 74 3ms 11 May 2025 104th kg583 🇺🇸 0 74 138ms 3 Oct 2025 104th error256 0 74 3ms 5 hours ago 108th kg583 🇺🇸 0 75 131ms 1 Dec 2024 108th hallvabo 🇳🇴 0 75 133ms 30 Dec 2024 108th ovs-code 🇩🇪 0 75 19ms 23 Feb 2025 108th pardouin 🇫🇷 0 75 136ms 24 Feb 2025 108th Shanethegamer 🇺🇸 0 75 72ms 7 May 2025 108th edsrzf 🇳🇿 0 75 708ms 9 May 2025 108th error256 0 75 166ms 10 May 2025 108th Natanaelel 🇸🇪 0 75 18ms 11 May 2025 108th Seek64 🇩🇪 0 75 125ms 3 Jun 2025 108th commandblockguy 🇺🇸 0 75 1,176ms 27 Aug 2025 108th JOrE20 🇺🇸 0 75 17ms 18 days ago 108th albanian-laundromat 0 75 103ms 7 days ago 108th albanian-laundromat 0 75 375ms 6 days ago 108th GolfingSuccess 🇬🇷 0 75 19ms 32 hours ago 122nd Shanethegamer 🇺🇸 0 76 133ms 13 Dec 2024 122nd edsrzf 🇳🇿 0 76 117ms 10 May 2025 122nd ovs-code 🇩🇪 0 76 3ms 10 May 2025 122nd AlephSquirrel 0 76 38ms 3 Dec 2025 122nd AlephSquirrel 0 76 429ms 3 Dec 2025 127th CornerMercury 🇬🇧 0 77 18ms 3 Dec 2024 127th ndren 0 77 19ms 3 Dec 2024 127th lifthrasiir 🇰🇷 0 77 189ms 11 Dec 2024 127th Shanethegamer 🇺🇸 0 77 19ms 13 Dec 2024 127th DialFrost 🇸🇬 0 77 16ms 8 May 2025 127th emgordon154 0 77 38ms 9 May 2025 127th edsrzf 🇳🇿 0 77 1,937ms 9 May 2025 127th Natanaelel 🇸🇪 0 77 3ms 11 May 2025 127th lukegustafson 🇺🇸 0 77 17ms 16 Jun 2025 127th addmai 0 77 19ms 24 Jul 2025 127th hiichbindermax 0 77 17ms 17 Aug 2025 127th 5cw 🇺🇸 0 77 17ms 22 Aug 2025 127th davecame 0 77 140ms 25 Sep 2025 127th SirBogman 🇺🇸 0 77 230ms 13 Oct 2025 127th jtaxen 0 77 19ms 16 Oct 2025 127th albanian-laundromat 0 77 18ms 25 Nov 2025 127th albanian-laundromat 0 77 366ms 6 Dec 2025 144th jameswmccarty 0 78 18ms 29 Mar 2025 144th DialFrost 🇸🇬 0 78 939ms 10 May 2025 144th DialFrost 🇸🇬 0 78 3ms 10 May 2025 144th solisolu 0 78 18ms 10 Nov 2025 148th KasperKivimaeki 🇫🇮 0 79 3ms 1 Nov 2025 149th Shanethegamer 🇺🇸 0 80 5ms 3 Jun 2025 150th Shanethegamer 🇺🇸 0 81 291ms 3 Jun 2025 151st bricknellj 0 82 16ms 30 Jan 2025 151st dokutan 0 82 21ms 15 Aug 2025 153rd GolfingSuccess 🇬🇷 0 83 108ms 26 hours ago 153rd GolfingSuccess 🇬🇷 0 83 374ms 9 hours ago 153rd error256 0 83 367ms 5 hours ago 156th albanian-laundromat 0 84 9ms 11 Dec 2025 157th Shanethegamer 🇺🇸 0 85 11ms 13 Dec 2024 157th edsrzf 🇳🇿 0 85 1,029ms 25 May 2025 157th albanian-laundromat 0 85 92ms 6 Dec 2025 160th kg583 🇺🇸 0 86 22ms 2 Oct 2025 First Prev 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