Collatz in Java in bytes. 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 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 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 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 NFA Simulator 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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 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 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 1st JayXon 🇺🇸 1,000 88 331ms 24 Sep 2025 2nd DialFrost 🇸🇬 989 89 342ms 24 Sep 2025 2nd ovs-code 🇩🇪 989 89 345ms 24 Sep 2025 2nd dokutan 989 89 336ms 24 Sep 2025 2nd sean-niemann 🇺🇸 989 89 347ms 24 Sep 2025 2nd Shanethegamer 🇺🇸 989 89 340ms 25 Sep 2025 2nd nwellnhof 🇩🇪 989 89 340ms 25 Sep 2025 2nd m-tkach 🇺🇦 989 89 337ms 25 Sep 2025 2nd namelessiw 989 89 340ms 2 Oct 2025 2nd Yewzir 🇧🇪 989 89 339ms 2 Oct 2025 2nd Yax42 🇫🇷 989 89 335ms 4 Oct 2025 2nd stefangimmillaro 989 89 345ms 6 Oct 2025 2nd CaedenHarper 🇨🇦 989 89 366ms 9 Oct 2025 2nd Jacob385 989 89 352ms 11 days ago 2nd MeWhenI 🇻🇦 989 89 336ms 24 hours ago 16th ethanlally 967 91 336ms 2 days ago 17th albanian-laundromat 936 94 339ms 24 Sep 2025 17th kmathis22 936 94 340ms 24 days ago 17th jkelly467 936 94 339ms 16 days ago 17th HumanoidCPU 936 94 337ms 14 hours ago 21st snoozingnewt 🇺🇸 926 95 341ms 8 Oct 2025 22nd Liibe 907 97 334ms 25 Sep 2025 23rd Schmitt-Very-Cool 898 98 336ms 26 Sep 2025 24th Lydxn 🇨🇦 704 125 302ms 6 May 2022 25th Irratix 🇳🇱 698 126 302ms 4 May 2022 25th janbehrens 🇩🇪 698 126 296ms 4 May 2022 25th shellbertt 🇨🇦 698 126 303ms 4 May 2022 25th inventshah 698 126 296ms 4 May 2022 25th ScottHamper 698 126 301ms 5 May 2022 25th 5quiwyrm 698 126 300ms 4 Sep 2022 25th KrausRaus 🇺🇸 698 126 304ms 9 Sep 2022 25th Betuaredead 698 126 298ms 5 Jan 2023 25th annaproxy 698 126 302ms 7 Jan 2023 25th eMGeeneer 698 126 302ms 15 Jun 2024 25th mrondon8 698 126 305ms 2 Dec 2024 25th plastic-bottle 698 126 305ms 27 Aug 2025 37th Luca2812 693 127 305ms 12 Dec 2022 37th h3ra993huskp 🇯🇵 693 127 291ms 17 Sep 2023 37th tigerdan2 🇩🇪 693 127 299ms 19 Dec 2023 37th Apataras 693 127 301ms 16 Jul 2025 41st cbrt-x 682 129 298ms 6 May 2022 41st piano-miles 682 129 306ms 8 Feb 2023 41st lukashert 682 129 308ms 7 Jun 2023 41st bac0id 682 129 307ms 29 Jun 2024 41st yoshykai 682 129 306ms 27 Mar 2025 46th bwat2 677 130 307ms 5 May 2022 46th FlorianCassayre 🇫🇷 677 130 294ms 20 Sep 2022 46th Widgitty 677 130 303ms 29 May 2023 49th SiestaGuru 672 131 298ms 9 Jan 2023 50th c0d3-4-F00d 🇩🇪 667 132 313ms 6 May 2022 50th madeforlosers 667 132 298ms 26 Oct 2023 50th Blockyheadman 667 132 301ms 1 Nov 2023 50th SpiritAxolotl 🇺🇸 667 132 304ms 20 Mar 2024 54th ravnskjaer 🇩🇰 662 133 299ms 11 Sep 2024 54th 123mjb 662 133 291ms 26 Sep 2025 56th althryenix 657 134 293ms 25 Jul 2022 56th MrGagnonHPS 657 134 292ms 1 Nov 2023 56th noescareno 657 134 304ms 31 May 2025 59th lukehewittvandy 652 135 302ms 18 Jul 2022 59th OriEy 652 135 305ms 27 Apr 2023 59th Maximizer02 652 135 308ms 8 Jun 2024 59th 0dyse 652 135 317ms 23 Apr 2025 63rd crizin 🇰🇷 647 136 307ms 9 Sep 2023 63rd TheZwierzLF 🇵🇱 647 136 303ms 2 Jun 2025 65th eshilo-draper 642 137 299ms 4 Sep 2022 66th azka1368 638 138 311ms 23 Nov 2023 67th Smetalo 633 139 298ms 25 Aug 2022 67th ToxicP1e 633 139 298ms 2 Mar 2023 69th yashima 624 141 302ms 19 Oct 2024 69th matas132 624 141 309ms 16 Sep 2025 69th katss2 624 141 302ms 19 Sep 2025 72nd msbranicky 607 145 300ms 9 Jan 2024 73rd deancureton 603 146 301ms 24 Mar 2024 74th pyuraii 591 149 299ms 27 Sep 2022 74th Chinay-Domitrix 🇺🇸 591 149 307ms 29 Mar 2025 1–75 of 106 Next Last