math-combination(数学组合)
Install
npm i math-combination --save
Usage
var combination = require('math-combination')
var arr = [1, 2, 3]
//Get all conditions that conbine two element of the the arr(different order same condition)
combination.cmn(arr, 2)
//Get all conditions that conbine two element of the the arr(different order same condition and element can repeat)
combination.cmnWithRepetition(arr, 2)
Note
Only support for array of String or Number