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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 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim 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 Chars Time Submitted 501st duckyluuk 🇳🇱 606 69 119ms 8 days ago 502nd scpchicken 🇵🇼 602 45 6ms 16 days ago 503rd tomh1012 602 97 474ms 24 Mar 2026 504th janAkali 🇷🇺 600 99 434ms 1 Apr 2026 505th albanian-laundromat 🇺🇸 598 98 146ms 23 Feb 2026 506th dokutan 597 54 48ms 19 days ago 507th Shanethegamer 🇺🇸 597 121 166ms 13 Dec 2024 508th michelebastione 🇮🇹 596 98 443ms 30 Mar 2026 509th madex 🇩🇪 590 119 1,464ms 28 Mar 2026 510th Solathian 589 46 77ms 26 Mar 2026 511th dokutan 581 72 209ms 19 days ago 512th Mikey-Beep 🇬🇧 568 99 25ms 22 days ago 513th madex 🇩🇪 568 129 426ms 27 Mar 2026 514th prestosilver 🇺🇸 566 105 430ms 1 Apr 2026 515th JOrE20 563 100 46ms 15 Dec 2025 515th tails618 563 100 22ms 17 days ago 517th dokutan 560 129 37ms 23 hours ago 518th albanian-laundromat 🇺🇸 557 75 268ms 2 Mar 2026 519th Shanethegamer 🇺🇸 549 146 31ms 9 May 2025 520th dokutan 538 75 825ms 19 days ago 521st JDiLenarda 🇫🇷 536 131 1,562ms 25 Mar 2026 522nd Shanethegamer 🇺🇸 523 50 4,043ms 8 May 2025 523rd Arkadios200 520 146 2,610ms 20 days ago 524th madex 🇩🇪 514 100 118ms 28 Mar 2026 525th dokutan 513 191 293ms 19 days ago 526th dcc5480 507 111 20ms 15 days ago 527th madex 🇩🇪 494 53 510ms 27 Mar 2026 528th HumanoidCPU 487 120 515ms 30 Mar 2026 529th madex 🇩🇪 471 170 33ms 28 Mar 2026 530th denkyuu1 460 70 45ms 3 days ago 531st Shanethegamer 🇺🇸 460 85 6ms 13 Dec 2024 532nd Shanethegamer 🇺🇸 450 107 8ms 9 May 2025 533rd AstroOrbis 447 126 32ms 12 Aug 2025 534th Msleizak 🇫🇷 427 84 339ms 30 Mar 2026 535th kasarino 420 170 45ms 18 days ago 536th madex 🇩🇪 418 78 91ms 28 Mar 2026 537th dokutan 412 163 470ms 19 days ago 538th dokutan 384 152 448ms 19 days ago 539th muser-logiccpu 🇺🇦 370 88 70ms 2 Sep 2025 540th Ripick 300 198 466ms 21 days ago 541st dokutan 295 192 5ms 10 days ago 542nd dokutan 258 233 20ms 10 days ago 543rd dokutan 205 371 72ms 19 days ago 544th dokutan 170 371 4ms 19 days ago 545th darrenks 🇺🇸 0 6 45ms 24 Mar 2026 545th 2bular 0 6 45ms 24 Mar 2026 545th Natanaelel 🇸🇪 0 6 46ms 24 Mar 2026 545th plcc0 0 6 46ms 25 Mar 2026 549th kg583 🇺🇸 0 9 940ms 14 May 2025 549th themoonisacheese 0 9 2,893ms 1 Apr 2026 549th someCoder-a11y 0 9 214ms 14 days ago 549th namelessiw 0 9 344ms 14 days ago 553rd AlephSquirrel 0 20 8ms 3 Dec 2025 553rd ovs-code 🇩🇪 0 20 9ms 3 Dec 2025 555th AlephSquirrel 0 27 5ms 3 Dec 2025 555th ovs-code 🇩🇪 0 27 6ms 7 Dec 2025 557th ovs-code 🇩🇪 0 29 123ms 3 Dec 2025 558th Shanethegamer 🇺🇸 0 31 35ms 16 hours ago 559th KatieLG 🇬🇧 0 43 65ms 29 Mar 2026 560th madex 🇩🇪 0 59 1,440ms 27 Mar 2026 561st dokutan 0 64 426ms 10 days ago 562nd GolfingSuccess 🇬🇷 0 65 92ms 12 Jan 2026 563rd Shanethegamer 🇺🇸 0 67 92ms 7 May 2025 564th GolfingSuccess 🇬🇷 0 71 23ms 12 Jan 2026 564th GolfingSuccess 🇬🇷 0 71 18ms 14 Jan 2026 566th dokutan 0 72 71ms 42 hours ago 567th Matter1024 🇮🇳 0 101 60ms 18 days ago 568th edsrzf 🇳🇿 0 108 1,839ms 21 May 2025 569th btjones0 0 126 168ms 25 Mar 2026 570th FortuiteMan 🇫🇷 0 132 267ms 4 days ago 571st edsrzf 🇳🇿 0 136 4,774ms 19 May 2025 572nd dokutan 0 199 13ms 42 hours ago First Prev 501–572 of 572