Gray Code Decoder in all languages in chars. 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 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 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 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 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 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 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 Chars Time Submitted 81st lifthrasiir 🇰🇷 0 59 572ms 11 Dec 2024 81st ovs-code 🇩🇪 0 59 502ms 23 Feb 2025 81st GolfingSuccess 🇬🇷 0 59 175ms 12 Jan 2026 81st error256 0 59 68ms 13 Jan 2026 85th khvdm 0 60 156ms 13 Jan 2025 85th emgordon154 0 60 274ms 9 May 2025 85th emgordon154 0 60 379ms 9 May 2025 85th albanian-laundromat 0 60 445ms 29 hours ago 89th DialFrost 🇸🇬 0 61 26ms 24 Feb 2025 89th voytxt 🇨🇿 0 61 42ms 1 Jan 2026 91st Andrey-Plotnikov 0 62 26ms 12 Jan 2025 91st XenThe 🇬🇧 0 62 13ms 15 Jul 2025 91st sean-niemann 🇺🇸 0 62 401ms 15 Jan 2026 91st pardouin 🇫🇷 0 62 192ms 9 days ago 91st Steffan153 🇫🇮 0 62 200ms 3 days ago 96th kg583 🇺🇸 0 63 904ms 1 Dec 2024 96th hallvabo 🇳🇴 0 63 150ms 30 Dec 2024 96th Shanethegamer 🇺🇸 0 63 171ms 7 May 2025 96th sean-niemann 🇺🇸 0 63 7ms 9 May 2025 96th rucin93 🇵🇱 0 63 7ms 10 May 2025 96th edsrzf 🇳🇿 0 63 6ms 10 May 2025 96th targrik 0 63 7ms 8 Oct 2025 96th albanian-laundromat 0 63 15ms 7 Dec 2025 96th GolfingSuccess 🇬🇷 0 63 7ms 12 Jan 2026 105th CornerMercury 🇬🇧 0 64 19ms 3 Dec 2024 105th ndren 0 64 18ms 3 Dec 2024 105th lifthrasiir 🇰🇷 0 64 182ms 11 Dec 2024 105th emgordon154 0 64 19ms 9 May 2025 105th error256 0 64 4,378ms 15 Jan 2026 105th anter69 🇭🇺 0 64 19ms 19 days ago 105th albanian-laundromat 0 64 18ms 29 hours ago 105th albanian-laundromat 0 64 477ms 6 hours ago 113th Shanethegamer 🇺🇸 0 65 257ms 13 Dec 2024 113th GolfingSuccess 🇬🇷 0 65 92ms 12 Jan 2026 113th dokutan 0 65 359ms 9 days ago 116th dokutan 0 66 19ms 18 Aug 2025 116th Yax42 🇫🇷 0 66 398ms 6 Jan 2026 116th AdrienHache 🇫🇷 0 66 423ms 6 Jan 2026 116th GolfingSuccess 🇬🇷 0 66 10ms 12 Jan 2026 116th JOrE20 0 66 34ms 12 days ago 121st Shanethegamer 🇺🇸 0 67 92ms 7 May 2025 121st Shanethegamer 🇺🇸 0 67 436ms 7 May 2025 121st namelessiw 0 67 441ms 2 Nov 2025 121st error256 0 67 146ms 25 days ago 125th 4atj 0 69 1,159ms 21 May 2025 125th GolfingSuccess 🇬🇷 0 69 394ms 14 Jan 2026 127th btnlq 0 70 193ms 4 Dec 2024 127th kg583 🇺🇸 0 70 120ms 3 Oct 2025 127th error256 0 70 133ms 15 Jan 2026 130th GolfingSuccess 🇬🇷 0 71 4ms 12 Jan 2026 130th GolfingSuccess 🇬🇷 0 71 25ms 12 Jan 2026 130th GolfingSuccess 🇬🇷 0 71 18ms 14 Jan 2026 133rd edsrzf 🇳🇿 0 72 546ms 9 May 2025 133rd kg583 🇺🇸 0 72 18ms 2 Oct 2025 133rd error256 0 72 19ms 12 Jan 2026 136th IISResetMe 0 73 256ms 10 Jan 2026 137th rhdqor213 0 74 3ms 11 May 2025 137th saito-ta 🇯🇵 0 74 3ms 11 May 2025 137th error256 0 74 3ms 12 Jan 2026 137th dokutan 0 74 65ms 15 days ago 141st ovs-code 🇩🇪 0 75 19ms 23 Feb 2025 141st Shanethegamer 🇺🇸 0 75 71ms 7 May 2025 141st edsrzf 🇳🇿 0 75 669ms 9 May 2025 141st Natanaelel 🇸🇪 0 75 20ms 11 May 2025 141st Seek64 🇩🇪 0 75 125ms 3 Jun 2025 141st commandz0 🇺🇸 0 75 1,210ms 27 Aug 2025 141st albanian-laundromat 0 75 125ms 5 Jan 2026 141st albanian-laundromat 0 75 370ms 6 Jan 2026 141st GolfingSuccess 🇬🇷 0 75 18ms 11 Jan 2026 150th Shanethegamer 🇺🇸 0 76 129ms 13 Dec 2024 150th edsrzf 🇳🇿 0 76 111ms 10 May 2025 150th ovs-code 🇩🇪 0 76 3ms 10 May 2025 150th AlephSquirrel 0 76 43ms 3 Dec 2025 150th AlephSquirrel 0 76 445ms 3 Dec 2025 155th Shanethegamer 🇺🇸 0 77 19ms 13 Dec 2024 155th DialFrost 🇸🇬 0 77 19ms 8 May 2025 155th edsrzf 🇳🇿 0 77 1,938ms 9 May 2025 155th Natanaelel 🇸🇪 0 77 3ms 11 May 2025 155th lukegustafson 🇺🇸 0 77 18ms 16 Jun 2025 155th addmai 0 77 20ms 24 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