math-permutation(数学排列)

Install

npm i math-permutation --save

Usage

var permutation = require('math-permutation')
var arr = [1, 2, 3]

//Get all conditions that conbine two element of the the arr(different order different condition)
combination.cmn(arr, 2)

//Get all conditions that conbine two element of the the arr(different order different condition and element can repeat)
combination.cmnWithRepetition(arr, 2)

Note

Only support for array of String or Number

See test for more details