randomSubsequence (original) (raw)

Pick an arbitrary subsequence.

Similar: randomSubsequence, subsequences, hasSubsequence, searchSubsequence.

function randomSubsequence(x, n, fr) // x: an array // n: number of values [-1 ⇒ any] // fr: random number generator ([0, 1))

const xarray = require('extra-array');

var x = [1, 2, 3, 4, 5]; xarray.randomSubsequence(x); // → [ 1, 2 ]

xarray.randomSubsequence(x, 3); // → [ 1, 3, 5 ]

xarray.randomSubsequence(x, 2); // → [ 3, 5 ]

References

• shuffle() : PHP
• shuffle-seed : @webcaetano
• shuffle-array : @pazguille
• Seeding the random number generator in Javascript