Is single swap enough to sort array?

I ask myself that everyday. And finally i can know the answer.

Problem

Given an array A of length N return true if A can be sorted using at most single element swap. Return false otherwise.

Install

npm install is-single-swap-enough

Example

const isSingleSwapEnough = require('is-single-swap-enough');

isSingleSwapEnough([1, 3, 2, 4]); // true

isSingleSwapEnough([40, 50, 10]); // false

Documentation

isSingleSwapEnough

isSingleSwapEnough(array, [comparator], [isSortingDescending]) => boolean

Arguments

array

Array of any items. If compare function is not passed, then assumed, that this is number[]

comparator

Optional. Function that does compare items in array. For more info go to MDN

isSortingDescending

Optional. Defines sort order: defaults to false.

Thanks to this