TL;DR: Add a list of links, one on each line, and click shuffle to randomly organise them

Demo

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TODO:

• Add readme
• Fix typescript errors (remove ts-nocheck)

Plans:

• Convert to table form & add columns to each link: counter, checkbox, note, date clicked?
• When link is clicked, check it automatically/increase counter
• Shuffle only selected
• Import/export
• Responsive layout/mobile (basic)

Appendix

Randomness

In order to provide the random shuffling functionality, the app utilises a pseudorandom number generator (prng for short). This is an algorithm which produces a deterministic sequence of numbers that seems random, but is in fact not. See random number generation.

A prng's sequence is determined completely by it's seed. If the same seed is used, the same sequence will be generated. This simplifies the task of reproducing/persisting randomised data (for example, the app keeps the output in the same random order if the page is refreshed). Unfortunately, Javascript's built-in Math.random is not seedable by the programmer.

Specifically, the app uses the sfc32 prng to power the fisher-yates shuffling algorithm.

sfc32 has a 128-bit internal state, which requires 4x 32-bit numbers to seed. The first three are https://en.wikipedia.org/wiki/Nothing-up-my-sleeve_number constants:

3141592653, // pi
2718281828, // e
1414213562, // sqrt(2)

The fourth is generated whenever the user clicks the shuffle button, by using Math.random to generate an integer in the range [0, 2^29). This is the number referred to as the seed at the bottom of the app.