Customizable Fisher-Yates shuffle
npm install fy-shuffleShuffles an array using the Fisher-Yates algorithm. The difference between this implementation and others out there is that
the shuffle is parameterized with a random number generator function, so it can
be used to generate predictable results (using e.g. a Linear Congruential Generator).
npm install fy-shuffle --save
A call to the exported function returns a shuffled version of the given array.
var fyShuffle = require("fy-shuffle");
// Outputs [2, 1, 4, 3], or some permutation of it.
console.log(fyShuffle([1, 2, 3, 4]));
// Pass a custom random number generator.
// Always outputs [1, 4, 2, 3].
console.log(fyShuffle([1, 2, 3, 4], function () { return 0.5; }));
Shuffles the given array.
- array - array
Array to shuffle
- random - function
The random number generator function to use. Must return a number between 0.
inclusive and 1 exclusive.
Default: Math.random
