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Subhajit Sahu edited this page Feb 3, 2021 · 19 revisions

Exchange two values.


function swap(x, i, j)
// x: an iterable
// i: an index
// j: another index
const xiterable = require('extra-iterable');

var x = [1, 2, 3, 4];
[...xiterable.swap(x, 0, 1)];
// → [2, 1, 3, 4]

[...xiterable.swap(x, 0, 3)];
// → [4, 2, 3, 1]


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