MonoRandom

Fast pseudorandom number generator for node.js and browsers.

API

Constructor

Create instance with seed using:

const rnd = new MonoRandom(123);

Numbers Generation

// a random number between 0.0 and 1.0
rnd.nextDouble(); // 0.8265167855781116

// a non-negative random integer
rnd.nextInt(); // 567916045

// a non-negative random integer less than the specified maximum
rnd.nextMax(234); // 83

// a random integer within the specified range
// minValue is inclusive, maxValue is exclusive
rnd.next(345, 456); // 411

Array shuffling

Method 1:

• Leaves the original array unmodified;
• Is equivalent to doing .OrderBy(x => rnd.NextDouble()) in C#.

rnd.shuffleArray([567, "qwe", null, false]); // [null, 567, false, "qwe"]

Method 2 (Fisher–Yates shuffle):

• Brings an array into random order using the Fisher-Yates shuffle;
• This is an inplace array, i.e. the input array is modified.

const arr = [678, "asd", undefined, true];
rnd.shuffleFisherYates(arr);
console.log(arr); // [undefined, true, "asd", 678]