Dev tools · alternatives · 2026
24 alternatives to an extremely simple program shows a 2D structure in the integers
This seems unlikely to be a "new" idea, but I stumbled into it by accident and thought it was cool. Java source code below: // This class is in the public domain. public class Numbers { public static void main(String[] args) { int numRows = 256; int numColumns = 128; for (int row = 0; row < numRows; row++) { StringBuilder rowOutput = new StringBuilder(); for (int column = 0; column < numColumns; column++) { if ((row & column) != 0) rowOutput.append("1"); else rowOutput.append("0"); } System.out.println( String.format("row/col %s:\t%s", row, rowOutput.toString())); } } }
This Java program visualizes binary bitwise operations as a 2D pattern by performing an AND operation between row and column indices and displaying the results as ones and zeros. It generates a 256-by-128 grid where… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. an extremely simple program shows a 2D structure in the integers launched in 2014; newer entries below may have overtaken it.
- 1IW
https://www.manning.com/books/data-oriented-programming-in-j... This book is a distillation of everything I’ve learned about what effective development looks like in Java (so far!). It's about how to organize programs around data "as plain data" and the surprisingly benefits that emerge when we do. Programs that are built around the data they manage tend to be simpler, smaller, and significantly easier understand. Java has changed radically over the last several years. It has picked up all kinds of new language features which support data oriented programming (records,…
2024 · its alternatives →
- 2IM
This is the first iteration of a short game I’m making that tries to interactively explain some of my favorite math questions / ideas. My goal is mostly to get the player curious and not necessarily to explain absolutely everything. There were a lot of fun technical parts to building this: - For implementation reasons, it’s much easier if the lines all have integer intersection points with each other. To do this, when a new line is added I “cheat” by rounding intersections to integers and then splitting the old lines at the intersection into new linds (with potentially different slopes)…
2024 · rahulilango.com · its alternatives →
- 3
Visit the URL to explore what happens. Double-click or press “N” to generate a new experiment. Press “A” to learn more about how it works.
Aug 2026 · number-garden.com · its alternatives →
- 4
🥞Data Structures and Algorithms explained and implemented in JavaScript + eBook - amejiarosario/dsa.js-data-structures-algorithms-javascript
2019 · github.com · its alternatives →
- 5
This program provides a simple way of visualizing the different regions of a binary file. Written in C, depends only on libpng. Currently (commit 1dd42e3) it is able to generate PNG images that represent various aspects of the binary: - Grayscale: Byte values, 00..FF. - Ascii: Printability of each byte. - Entropy: Of a "block", changed with --block-size. - Histogram: Bar graph of the byte frequencies. - Bigrams: Each point is determined by a pair of bytes. - Dotplot: Measure self-similarity. Image width/height is N^2. In the future, I plan on adding an SDL version that allows the user…
2024 · github.com · its alternatives →
- 6
Optimizer library for tail recursive calls in Java bytecode - Sipkab/jvm-tail-recursion
2020 · github.com · its alternatives →
- 7
We're building a different kind of JavaScript engine, based on data-oriented design and willingness to try something quite out of left field. This is most concretely visible in our major architectural choices: 1. All data allocated on the JavaScript heap is placed into a type-specific vector. Numbers go into the numbers vector, strings into the strings vector, and so on. 2. All heap references are type-discriminated indexes: A heap number is identified by its discriminant value and the index to which it points to in the numbers vector. 3. Objects are also split up into object kind -specific…
2024 · github.com · its alternatives →
- 8PN
Hello HN, I made this simple notepad for writing down whatever comes to mind. The goal is to force you to not get hung up on what you’ve already written. There’s no formatting, you can’t edit what you’ve typed, you can’t select text or move your caret around. There’s no backspace, delete, undo/redo, or paste. You can’t even see any words except the one you’re currently typing, and when you’re done with it, it fades away. The text is all still there, just invisible. You can save everything you’ve written as a .txt if you want, or just empty your thoughts and let them disappear forever.…
2025 · enda.sh · its alternatives →
- 9
- 10
2020 · pakastin.github.io · its alternatives →
- 11
Create interactive data tables in seconds with Tabulator. A free, open source, fully featured JavaScript table / data grid generation library.
2018 · tabulator.info · its alternatives →
- 12GJ
Grid.js is a lightweight JavaScript table plugin that works on all web browsers and devices. Grid.js is open-source and it helps you create advanced tables in seconds!
2020 · gridjs.io · its alternatives →
- 13IM
I've been studying interval arithmetic for the past few weeks and it's a really interesting field because while there is a ton of super interesting research published over the past decades, it has never really gotten the recognition that it deserves, IMO. One reason for this is that standard interval arithmetic has really poor handling of division by intervals containing zero. If you compute 1 / [-1, 2] in regular interval arithmetic, you get either [-∞, +∞], or you have to say that the operation is undefined. Both solutions are virtually useless. The real answer of course is [-∞, -1] U…
Apr 2026 · victorpoughon.github.io · its alternatives →
- 14
Visual explanations of Algorithms and Data structures
2020 · chrislaux.com · its alternatives →
- 15
Long-simmering side project that is finally ready to see the light. HAMTs are a cool persistent data structure and implementing one has been a lot of fun. Beyond the code, there is likely some value in the extensive and largely complete implementation docs; basic benchmarks are linked in the README, too. Kind of aiming to be "the libavl for HAMTs". That is obviously a high and aspirational bar but a distinct possibility if it stirs up a little interest and/or contribution. Anyways, it's time for this to go out, collect feedback and maybe even some use outside of toy projects. Let me…
2023 · github.com · its alternatives →
- 16
A wicked-powerful text macro language for building binary files. - thosakwe/t2b
2018 · github.com · its alternatives →
- 17
This project presents a new data structure for storing ordered integer maps. The proposed data structure is a compressive, cache-friendly, radix tree that has performance comparable to an unordered map (`std::unordered_map`) and is an order of magnitude faster than an ordered map (`std::map`).
2024 · github.com · its alternatives →
- 18AR
2015 · xqt2.com · its alternatives →
- 19
Programmer chronicles.
2020 · kuon.ch · its alternatives →
- 20
Codemap visualizes any codebase as a graph for software engineers to quickly understand the code architecture. Supports Typescript, Python, Java, PHP, Ruby, Go (Golang), and Terraform.
2020 · codemap.app · its alternatives →
- 21
Hey, maker here. After launching a daily word search game, I randomly thought of this math game while driving. Finally got around to making it and I think it turned out pretty cool. It’s a math search game that’s meant to help you practice your quick addition, subtraction, multiplication, and division skills. I’m hoping it’ll help people (even those like me who aren’t big on math) learn and increase their speeds. (There are also some settings you can enable to make the game harder) If you try it out, please let me know if you found it fun, if you have anything you’d like me to add, or if you…
2024 · worchle.com · its alternatives →
- 22
Effortlessly visualize JSON structures as dynamic tree diagrams - The-01-Company/jsontr.ee
2024 · github.com · its alternatives →
- 23
I started writing this book 10 years ago in JavaScript, got through a few chapters (asymptotic notation, basic techniques, start of sorting), and then abandoned it. Recently I picked it back up, converted everything to TypeScript, and used AI (Zenflow [1] + Claude Opus 4.6) to complete the remaining chapters. I provided the structure, direction, and initial chapters; the AI generated the bulk of the remaining content under a spec-driven workflow. The book covers roughly a first 1-2 year CS curriculum: sorting, dynamic programming, graph algorithms, trees, heaps, hash tables, and more. All…
Mar 2026 · amoilanen.github.io · its alternatives →
- 24
Visualize string positions with JavaScript. Contribute to ThimoKl/StringViz development by creating an account on GitHub.
2013 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →