rotate$

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Subhajit Sahu edited this page May 3, 2023 · 25 revisions

Rotate values in array!

Alternatives: rotate, rotate$.
Similar: repeat, cycle, rotate, reverse.

function rotate$(x, n)
// x: an array (updated!)
// n: rotate amount (+ve: left, -ve: right) [0]

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

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

x;
// → [ 2, 3, 4, 1 ]

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

var x = [1, 2, 3, 4];
xarray.rotate$(x, -1);
// → [ 4, 1, 2, 3 ]

References